Multifunctional desk and chair for sitting, standing and lying
By designing multi-functional desks and chairs with sitting and lying, using table and chairs in one piece and multiple adjustment components, the existing desks and chairs have solved the problems of single functions, inconvenient adjustment and unreasonable space utilization, and achieved flexible height and angle Adjust to adapt to the needs of different learning scenarios.
Patent Information
- Application Number
- CN202420774345.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-15
- Publication Date
- 2025-02-21
- Estimated Expiration
- 2034-04-15
AI Technical Summary
The existing desks and chairs have single functions, inconvenient adjustment, unreasonable use of space, and cannot meet different learning scenarios and student needs.
A multi-functional desk and chair with a sitting and lying function is designed, which adopts a table and chair joint shape, including a table and chair telescopic legs, brackets, chair surfaces, folding chair back components, desk height adjustment components and desk angle adjustment components. Through push and pull, Flip operations such as changing realize adjustments of different heights and angles, meeting the needs of three postures: sitting, standing and lying.
It realizes flexible adjustment of desks and chairs, adapts to the needs of students of different heights and different learning scenarios, improves students' learning experience and efficiency, and saves space.
Smart Images
Figure CN222510262U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a desk and chair, in particular to a multifunctional desk and chair for sitting, standing and lying. Background Art
[0002] In traditional educational environments, the design of desks and chairs often focuses on their basic functions, that is, providing students with a platform for writing and reading and a seat. However, with the continuous development of educational concepts and the increasing diversity of student needs, the existing desk and chair design can no longer fully meet the needs of modern education. Specifically, the existing desks and chairs have the following main problems:
[0003] Single function: Traditional desks and chairs usually only have basic sitting and writing functions, and lack the flexibility to adapt to different learning scenarios. For example, when drawing or using electronic devices is required, the angle and height of the desktop are often not adjustable, which limits students' learning experience.
[0004] Inconvenient adjustment: The height and angle adjustment mechanisms of many desks and chairs are complicated and require the assistance of teachers or professionals, and students cannot adjust them independently. This not only affects students' learning efficiency, but also increases the workload of teachers.
[0005] Unreasonable use of space: Traditional desks and chairs often do not provide enough space and comfort during lunch breaks or when lying down for a rest. Students need additional equipment or change the classroom layout, which not only affects the cleanliness and order of the classroom, but is also not conducive to the health of students. Utility Model Content
[0006] The purpose of the utility model is to provide a multifunctional desk and chair for sitting, standing and lying down, so as to solve the above-mentioned problems in the prior art.
[0007] To achieve the above purpose, the following technical solution is adopted.
[0008] A multifunctional desk and chair for sitting, standing and lying, characterized in that it includes a desk and chair in the form of a combined desk and chair, and the desk and chair in the form of a combined desk and chair includes a desk and chair base, telescopic legs, a desk and chair bracket, a seat, a folding chair back assembly, a table top height adjustment assembly, a table top angle adjustment assembly and a table top, wherein the first end of the telescopic legs of the desk and chair is vertically arranged in the middle of the desk and chair base; the desk and chair bracket is arranged in the middle of the telescopic legs of the desk and chair; the seat surface is slidably arranged on the desk and chair bracket; the folding chair back assembly is rotatably connected to the second end of the telescopic legs of the desk and chair; the table top height adjustment assembly is rotatably connected to the second end of the telescopic legs of the desk and chair and the desk and chair bracket; the table top angle adjustment assembly is arranged on the table top height adjustment assembly; and the table top is arranged on the table top angle adjustment assembly.
[0009] Optionally, it also includes single-table desks and chairs, which include a single-table base, single-table telescopic legs, a desktop height adjustment component, a desktop angle adjustment component and a desktop, wherein the first end of the single-table telescopic legs is vertically arranged above the front of the single-table base; the upper part of the single-table telescopic legs is hinged to the desktop height adjustment component and the desktop angle adjustment component, and the desktop angle adjustment component is provided with the desktop.
[0010] Optionally, it also includes a desk and chair in the form of a single chair, which includes a single chair base, single chair telescopic legs, a single chair bracket, a seat, a folding backrest assembly and a backrest bracket assembly, wherein the single chair telescopic legs are vertically arranged above the single chair base; the single chair bracket is arranged in the middle of the single chair telescopic legs; the seat is arranged above the single chair bracket, the inner side of the upper part of the single chair telescopic legs is hinged to the folding backrest assembly, and the rear of the folding backrest assembly is hinged to the backrest bracket assembly.
[0011] Optionally, a book drawer that can be pushed and pulled forward and backward is placed under the chair surface, and the upper part of the book drawer is hinged to a leg rest assembly, and the leg rest assembly includes a leg rest panel and a support panel, the leg rest panel is hinged to the book drawer, and the front part of the leg rest panel is slidably connected to the front wall inside the book drawer, so as to hide the leg rest panel inside the book drawer; the support panels are arranged on both sides of the leg rest panel, and the support panels are used to support the leg rest panel on the book drawer after pulling it out of the book drawer.
[0012] Optionally, the folding chair back assembly includes a chair back, a limiting column, a chair back limiting slide and a headrest, the chair back being hinged to the inner side of the telescopic legs of the table and chair or the telescopic legs of the single chair; the limiting column is fixedly connected to the lower part of the chair back outer frame; the chair back limiting slide is arranged on the inner side of the telescopic legs of the table and chair or the telescopic legs of the single chair, the limiting column is slidably connected to the chair back limiting slide, and is used to limit the chair back in a vertical state or an inclined state; the headrest is arranged on the chair back for supporting the user's head or waist; the folding chair back assembly of the single-chair-type desk and chair is provided with a headrest bracket on the upper part of the chair back outer frame.
[0013] Optionally, the table top height adjustment assembly includes a table and chair connecting rod, a height adjustment slide, a height support rod, a height adjustment rod and an L-shaped safety buckle, the first end of the table and chair connecting rod is hinged to the table and chair telescopic leg or the single table telescopic leg, and the second end of the table and chair connecting rod is hinged to the bottom of the table top; the height adjustment slide is arranged at the lower part of the table and chair connecting rod, and the height adjustment slide includes teeth or tooth holes; the first end of the height support rod is provided with a gear, and the gear is engaged with the teeth or tooth holes of the height adjustment slide, and the second end of the height support rod is hinged to the table and chair bracket or the single table telescopic leg; the height adjustment rod is arranged between the two height support rods for synchronously adjusting the two height support rods; the L-shaped safety buckle is hinged to the first end of the height support rod, and the L-shaped safety buckle is provided with a step-shaped lock buckle, which is used to lock and unlock the position of the gear on the height adjustment slide by pushing and pulling the L-shaped safety buckle.
[0014] Optionally, the desktop angle adjustment assembly includes an angle adjustment slide, an angle support rod, an angle adjustment rod and an L-shaped safety buckle, the angle adjustment slide is arranged on the upper part of the table and chair connecting rod, and the angle adjustment slide includes a second tooth or a second tooth hole; a second gear is arranged at the first end of the angle support rod, and the second gear is engaged with the teeth or tooth holes of the angle adjustment slide, and the second end of the angle support rod is hinged to the bottom of the desktop; the angle adjustment rod is arranged between the two angle support rods for synchronously adjusting the two angle support rods; the L-shaped safety buckle is hinged at the first end of the angle support rod, and the first end of the angle support rod is also provided with a group of L-shaped safety buckles for locking and unlocking the position of the second gear on the angle adjustment slide.
[0015] Optionally, a book stop bar assembly is hinged above the desktop, and the book stop bar assembly includes an outer base, a limiting convex belt and a book stop bar, wherein there are two outer bases, which are respectively arranged on both sides of the desktop; the limiting convex belt is arranged on the top of the outer base; there are two book stop bars, and an inner base is arranged on one side of the book stop bar, and the inner base is rotatably connected to the outer base.
[0016] Optionally, the chair back bracket assembly includes a support rod, a chair back support rod and a support base, the support rod is hinged to the middle part of the chair back outer frame; the chair back support rod is a telescopic component, fixedly connected to the middle part of the support rod; the support base is fixedly connected to the lower part of the chair back support rod, a cross brace is provided at the lower part of the telescopic leg of the single chair, and the support base is hinged to the cross brace through a connecting rod.
[0017] Optionally, the chair back and seat also include a rattan mat, a cylindrical core rod and a special-shaped tube outer frame, and the two sides of the rattan mat are bent downward to extend the cylindrical core rod, and the cylindrical core rod is inserted into the special-shaped tube outer frame of the chair back or the seat, and the outer diameter of the cylindrical core rod is larger than the opening width of the special-shaped tube outer frame.
[0018] Compared with the prior art, the utility model has the following beneficial effects:
[0019] 1. This application disassembles and combines the functions of the table top, table drawer, table legs, chair surface, chair legs and chair back of common desks and chairs by setting up desks and chairs in the form of a one-piece desk and chair. By pushing, pulling and flipping, it can meet the different height and angle adjustment needs of desks and chairs for students of different heights and different learning scenarios, and the needs of adjustment in three postures of sitting, standing and lying down.
[0020] 2. The present application provides single-table desks and chairs and single-chair desks and chairs, wherein the single-table desks and chairs can be used in conjunction with the desks and chairs in the front of the classroom, and the single-chair desks and chairs can be used in conjunction with the desks and chairs in the back of the classroom. In addition, the single-table desks and chairs and the single-chair desks and chairs can be used in conjunction, providing different combinations of desks and chairs with a wider range of adaptability.
[0021] 3. This application provides a book drawer and a leg rest assembly. When not in use or after sleeping, the leg rest assembly can be hidden inside the book drawer, which does not take up too much space and is beautiful. When sleeping, the leg rest assembly can be quickly and conveniently pulled out of the book drawer and supported on the book drawer.
[0022] 4. This application can adjust the height and angle of the desktop simply and quickly by setting the desktop height adjustment component and the desktop angle adjustment component. Primary school students can adjust the desktop height conveniently and independently. There is no desktop angle adjustment function, which can fully meet the experiment, manual level desktop; writing, making Fig.10 The desktop can be tilted from 15° to 30°; the desktop can be tilted from 30° to 50° for reading; and from 60° to 70° for painting or playing musical instruments. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 The utility model is a three-dimensional structural diagram of a multifunctional desk and chair for sitting, standing and lying down, which is a one-piece desk and chair.
[0024] Figure 2 The utility model is a three-dimensional structural schematic diagram of a single-table multifunctional desk and chair for sitting, standing and lying.
[0025] Figure 3 The utility model is a three-dimensional structural schematic diagram of a single-chair multifunctional desk and chair for sitting, standing and lying.
[0026] Figure 4The utility model is a schematic diagram of a table and chair bracket structure of a multifunctional table and chair for sitting, standing and lying down.
[0027] Figure 5 The utility model is a schematic diagram of a single chair bracket structure of a multifunctional desk and chair for sitting, standing and lying.
[0028] Figure 6 The utility model is a schematic diagram of the leg support and bookcase structure of a multifunctional desk and chair for sitting, standing and lying.
[0029] Figure 7 The utility model is a schematic diagram of the enlarged structure of the leg support and bookcase of a multifunctional desk and chair for sitting, standing and lying.
[0030] Figure 8 The utility model is a schematic diagram of a folding chair back structure of a multifunctional desk and chair for sitting, standing and lying.
[0031] Fig. 9 It is an enlarged schematic diagram of the sliding structure of the folding chair back structure of a multifunctional desk and chair for sitting, standing and lying down of the utility model.
[0032] Fig.10 The utility model is a schematic diagram of the structure of a tabletop height adjustment component of a multifunctional desk and chair for sitting, standing and lying down.
[0033] Fig.11 It is an enlarged structural schematic diagram of a tabletop height adjustment component of a sit-stand-lie multifunctional desk and chair of the utility model.
[0034] Fig.12 The utility model is a schematic diagram of the structure of a tabletop angle adjustment component of a multifunctional desk and chair for sitting, standing and lying down.
[0035] Fig.13 The utility model is a schematic diagram of the structure of a book stop strip assembly of a multifunctional desk and chair for sitting, standing and lying down.
[0036] Fig.14 The utility model is a schematic diagram of the assembly structure of the inner base and the outer base of a multifunctional desk and chair for sitting, standing and lying.
[0037] Fig.15 The utility model is a schematic diagram of the structure of a book stop strip of a multifunctional desk and chair for sitting, standing and lying.
[0038] Fig.16 The utility model is a schematic diagram of the outer base structure of a multifunctional desk and chair for sitting, standing and lying.
[0039] Fig.17 The utility model is a schematic diagram of the backrest bracket structure of a multifunctional desk and chair for sitting, standing and lying.
[0040] Fig.18The utility model is a schematic diagram of the rattan seat and the seat frame structure of a multifunctional desk and chair for sitting, standing and lying.
[0041] Fig.19 The utility model is a schematic diagram of the rattan seat and chair back frame structure of a multifunctional desk and chair for sitting, standing and lying.
[0042] Fig. 20 The utility model is a schematic diagram of the enlarged structure of a rattan mat and a chair back and seat frame of a multifunctional desk and chair for sitting, standing and lying.
[0043] Fig.21 The utility model is a schematic diagram of the height adjustment of the desktop of a multifunctional desk and chair for sitting, standing and lying.
[0044] Fig. 22 The utility model is a schematic diagram of the tabletop angle adjustment of a multifunctional desk and chair for sitting, standing and lying.
[0045] Fig.23 It is a schematic diagram of the operation of storing and standing up the tabletop of a sit-stand-lie multifunctional desk and chair of the utility model.
[0046] Fig.24 The utility model is a schematic diagram of the lying operation of a multifunctional sitting, standing and lying desk and chair one-piece desk and chair.
[0047] Fig.25 The utility model is a schematic diagram of the operation of a single-chair lying position of a multifunctional desk and chair for sitting, standing and lying.
[0048] Among them: 1-table and chair base, 11-table and chair telescopic legs, 12-table and chair bracket, 13-armrest, 14-single table base, 15-single table telescopic legs, 16-single chair base, 17-single chair telescopic legs, 18-single chair bracket, 2-seat surface, 21-L-shaped limit plate, 22-seat surface slide, 23-rattan mat, 231-column core rod, 3-book bucket, 31-leg support limit slide, 32-reinforcement rib belt, 321-bayonet, 4-leg support assembly, 41-leg support panel, 42-support panel, 43-leg support limit shaft, 5-folding chair back assembly, 51-chair back bracket assembly, 511-support rod, 512-chair back bracket support rod, 513-inverted U-shaped foot, 52-special-shaped tube outer frame, 53-chair back limit column, 5 4-backrest limiting slide, 55-headrest, 56-headrest bracket, 6-desktop height adjustment assembly, 61-table and chair connecting rod, 62-height adjustment slide, 621-teeth, 622-tooth holes, 63-height support rod, 631-gear, 632-L-shaped safety buckle, 633-step-shaped lock, 64-height adjustment rod, 7-desktop angle adjustment assembly, 71-angle adjustment slide, 711-second teeth, 712-second tooth holes, 72-angle support rod, 721-second gear, 73-angle adjustment rod, 8-book stop strip assembly, 81-outer base, 811-limiting convex belt, 812-first anti-lock buckle, 82-inner base, 821-second anti-lock buckle, 83-book stop strip, 9-desktop. DETAILED DESCRIPTION
[0049] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.
[0050] The following detailed descriptions are all exemplary descriptions, and are intended to provide further detailed descriptions of the present invention. Unless otherwise specified, all technical terms used in the present invention have the same meanings as those generally understood by those skilled in the art to which the present application belongs. The terms used in the present invention are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present invention.
[0051] Embodiment 1
[0052] As attached Figure 1 As shown, a multifunctional desk and chair for sitting, standing and lying down includes three types of desks and chairs: a combined desk and chair, a single table, and a single chair.
[0053] The desks and chairs in the form of a combined table and chair include a table and chair base 1, telescopic legs 11, a table and chair bracket 12, a seat 2, a folding chair back assembly 5, a table top height adjustment assembly 6, a table top angle adjustment assembly 7 and a table top 9. The first end of the telescopic leg 11 is vertically arranged in the middle of the table and chair base 1; the table and chair bracket 12 is arranged in the middle of the telescopic leg 11; the seat 2 is slidably arranged on the table and chair bracket 12; the folding chair back assembly 5 is rotatably connected to the second end of the telescopic leg 11; the table top height adjustment assembly 6 is rotatably connected to the second end of the telescopic leg 11 and the table and chair bracket 12; the table top angle adjustment assembly 7 is arranged on the table top height adjustment assembly 6; and the table top 9 is arranged on the table top angle adjustment assembly 7.
[0054] like Figure 2 As shown, the single-table desk and chair includes a single-table base 14, a single-table telescopic leg 15, a desktop height adjustment component 6, a desktop angle adjustment component 7 and a desktop 9. The first end of the single-table telescopic leg 15 is vertically arranged above the front of the single-table base 14; the upper part of the single-table telescopic leg 15 is hinged to the desktop height adjustment component 6 and the desktop angle adjustment component 7, and the desktop angle adjustment component 7 is provided with a desktop 9.
[0055] like Figure 3 The single-chair desk and chair shown in the figure includes a single-chair base 16, a single-chair telescopic legs 17, a single-chair bracket 18, a seat surface 2, a folding backrest assembly 5 and a backrest bracket assembly 51. The single-chair telescopic legs 17 are vertically arranged above the single-chair base 16; the single-chair bracket 18 is arranged in the middle of the single-chair telescopic legs 17; the seat surface 2 is arranged above the single-chair bracket 18, the folding backrest assembly 5 is hinged to the inner side of the upper part of the single-chair telescopic legs 17, and the backrest bracket assembly 51 is hinged to the rear of the folding backrest assembly 5.
[0056] like Figure 1-Figure 3 As shown, the telescopic legs 11 of the table and chair, the telescopic legs 15 of the single table, and the telescopic legs 17 of the single chair are two telescopic sleeves or telescopic sleeve grooves nested together, and the length of the telescopic sleeve groove is adjusted by screws or hand-cranked lifting screws or jumping ball limiters.
[0057] like Figure 4 and Figure 5 As shown, the table and chair bracket 12 and the single chair bracket 18 are two metal tubes fixed to the inner side of the middle of the table and chair telescopic leg 11 or the single chair telescopic leg 17 and are symmetrical. The upper part of the metal tube is fixedly connected with an L-shaped limit piece 21 to form a seat slide 22. On the one hand, the front and rear push-pull sliding function of the seat 2 is realized, and on the other hand, a stable and reliable support is provided for the seat 2 and the table frame.
[0058] As a preferred example of the above example, a book drawer 3 that can be pushed and pulled forward and backward is placed under the chair surface 2, and the upper part of the book drawer 3 is hinged to the leg rest assembly 4, and the leg rest assembly 4 includes a leg rest panel 41 and a support panel 42. The leg rest panel 41 is hinged to the book drawer 3, and the front part of the leg rest panel 41 is slidably connected to the front wall of the book drawer 3, which is used to hide the leg rest panel 41 into the book drawer 3; the support panels 42 are arranged on both sides of the leg rest panel 41, and the support panels 42 are used to support the leg rest panel 41 on the book drawer 3 after pulling it out of the book drawer 3.
[0059] Specifically, Figure 6 and Figure 7 As shown, the leg support assembly 4 includes a leg support panel 41 hinged to the book bucket 3, and triangular support panels 42 are fixedly connected on both sides of the leg support panel 41. The leg support panel 41 and the support panel 42 can also be formed in one piece by injection molding. A leg support limiting shaft 43 is fixedly connected to the front of the leg support panel 41, and leg support limiting slides 31 are provided in the vertical direction on the left and right sides behind the front wall of the book bucket 3. The leg support limiting shaft 43 can slide up and down in the leg support limiting slides 31. The leg support panel 41 is lifted and rotated from the rear and inserted into the bottom of the leg support limiting slides 31, and the entire leg support can be hidden in the box of the book bucket 3. Two or more reinforcing ribs 32 with bayonet 321 are arranged in the middle of the left and right sides of the inner wall of the book bucket 3 in the vertical direction, and two or more support plate bayonet 321 are arranged at the lower part of the leg support support panel 42. After the leg support is pulled out from the book bucket 3, it is placed above the book bucket 3. The reinforcing rib bayonet 321 of the book bucket 3 and the leg support plate bayonet 321 are cross-nested and engaged with each other to provide stable and reliable support for the leg support. Placing the leg support above the book bucket 3 can not only avoid the book bucket 3 under the table from competing with the body for space or setting up a fixed leg support to occupy the small space under the table, but also realize that the leg support appears when the leg support function is needed, and hides in the book bucket 3 when the leg support function is not needed.
[0060] As a preferred example, the folding chair back assembly 5 includes a chair back, a limiting column, a chair back limiting slide 54 and a headrest 55, wherein the chair back is hinged on the inner side of the telescopic leg 11 of the desk and chair or the telescopic leg 17 of the single chair; the limiting column is fixedly connected to the lower part of the chair back outer frame; the chair back limiting slide 54 is arranged on the inner side of the telescopic leg 11 of the desk and chair or the telescopic leg 17 of the single chair, and the limiting column is slidably connected to the chair back limiting slide 54, and is used to limit the chair back in a vertical state or an inclined state; the headrest 55 is arranged on the chair back, and is used to support the user's head or waist; the folding chair back assembly 5 of the single-chair desk and chair is provided with a headrest bracket 56 on the upper part of the chair back outer frame.
[0061] Specifically, Figure 8 and Fig. 9As shown, the folding chair back assembly 5 includes a special-shaped tube chair back frame hinged on the inner side of two telescopic legs 11 of the table and chair or the telescopic legs 17 of the single chair. The lower part of the special-shaped tube frame 52 of the chair back is respectively fixedly connected to two chair back limiting columns 53. The two limiting columns run in the chair back limiting slide 54 on the inner side of the telescopic legs 11 of the table and chair or the telescopic legs 17 of the single chair to limit the vertical state or the inclined state of the chair back. The top of the chair back is connected to the headrest 55 by fabric. The headrest 55 forms a backrest when it is hung to the middle of the front of the chair back. The headrest 55 forms a headrest when it is pushed up to the upper part of the chair back. The difference between the single chair type folding chair back assembly 5 and the table and chair integrated type folding chair back assembly 5 is that the single chair type folding chair back assembly 5 has a headrest bracket 56 inserted in the upper part of the special-shaped tube frame 52 of the chair back.
[0062] As a preferred example, the table height adjustment assembly 6 includes a table and chair connecting rod 61, a height adjustment slide 62, a height support rod 63, a height adjustment rod 64 and an L-shaped safety buckle 632. The first end of the table and chair connecting rod 61 is hinged to the table and chair telescopic leg 11 or the single table telescopic leg 15, and the second end of the table and chair connecting rod 61 is hinged to the bottom of the table top 9; the height adjustment slide 62 is arranged at the lower part of the table and chair connecting rod 61, and the height adjustment slide 62 includes teeth 621 or tooth holes 622; the first end of the height support rod 63 is provided with a gear 631, and the gear 631 is fixedly connected to the first end of the height support rod 63. During use The gear 631 and the height support rod 63 do not rotate relative to each other, the gear 631 and the teeth 621 or the tooth holes 622 of the height adjustment slide 62 are meshed with each other, and the second end of the height support rod 63 is hinged to the table and chair bracket 12 or the single table telescopic leg 15; the height adjustment rod 64 is arranged between the two height support rods 63, and is used to synchronously adjust the two height support rods 63; the L-shaped safety buckle 632 is hinged at the first end of the height support rod 63, and the L-shaped safety buckle 632 is provided with a step-shaped lock buckle 633, which is used to lock and unlock the position of the gear 631 on the height adjustment slide 62 by pushing and pulling the L-shaped safety buckle 632.
[0063] Specifically, Figure 10-11 As shown, the table top height adjustment component 6 includes a table and chair connecting rod 61 hinged with the table and chair telescopic leg 11 or the single table telescopic leg 15, and a height adjustment slide 62 with teeth 621 or tooth holes 622 is formed by fixing an oblique or spur rack or a carved or punched oblique or straight hole at the lower part of the table and chair connecting rod 61. The oblique or spur gear with an axis fixed on the upper part of the height support rod 63 contacts and meshes with the teeth 621 or tooth holes 622 at different positions of the height adjustment slide 62 to realize the height adjustment function. The upper parts of the left and right height support rods 63 are fixedly connected together by the height adjustment rod 64 to realize the height synchronization adjustment function. An L-shaped safety buckle 632 is hinged on the gear shaft of the oblique spur gear with an axis, and the other end of the L-shaped safety buckle 632 is fixedly connected to a step-shaped lock buckle 633. The L-shaped safety buckle 632 is pushed and pulled left and right to lock and unlock the position of the oblique spur gear on the height adjustment slide 62.
[0064] As a preferred example, the desktop angle adjustment assembly 7 includes an angle adjustment slide 71, an angle support rod 72, an angle adjustment rod 73 and an L-shaped safety buckle 632. The angle adjustment slide 71 is arranged on the upper part of the table and chair connecting rod 61, and the angle adjustment slide 71 includes a second tooth 711 or a second tooth hole 712; a second gear 721 is arranged at the first end of the angle support rod 72, and the second gear 721 is fixedly connected to the first end of the angle support rod 72. During use, the second gear 721 and the angle support rod 72 do not rotate relative to each other, and the second gear 721 is meshed with the second tooth 711 or the second tooth hole 712 of the angle adjustment slide 71, and the second end of the angle support rod 72 is hinged to the bottom of the desktop 9; the angle adjustment rod 73 is arranged between the two angle support rods 72, and is used to synchronously adjust the two angle support rods 72; a group of L-shaped safety buckles 632 are also arranged at the first end of the angle support rod 72, which are used to lock and unlock the position of the second gear 721 on the angle adjustment slide 71.
[0065] Specifically, Fig.12 As shown, the desktop angle adjustment component 7 includes a table and chair connecting rod 61 hinged with the table and chair telescopic leg 11 or the single table telescopic leg 15, and the upper part of the table and chair connecting rod 61 is fixedly connected to an oblique or straight rack or a carved or punched oblique or straight hole to form an angle adjustment slide 71 with a second tooth 711 or a second tooth hole 712. The oblique or spur gear with an axis fixed at the lower part of the angle support rod 72 is in contact and meshing with the second tooth 711 or the second tooth hole 712 at different positions of the angle adjustment slide 71 to realize the angle adjustment function. The lower parts of the left and right angle support rods 72 are fixedly connected together by the angle adjustment rod 73 to realize the angle synchronization adjustment function. The gear shaft of the oblique or spur gear with an axis is hingedly connected to an L-shaped safety buckle 632, and the other end of the L-shaped safety buckle 632 is fixedly connected to a step-shaped lock buckle 633. The L-shaped safety buckle 632 is pushed and pulled left and right to lock and unlock the position of the oblique or spur gear with an axis on the angle adjustment slide 71.
[0066] As a preferred example, a book stop bar assembly 8 is hinged above the desktop 9, and the book stop bar assembly 8 includes an outer base 81, a limiting convex belt 82 and a book stop bar 83. There are two outer bases 81, which are respectively arranged on both sides of the desktop 9; the limiting convex belt 82 is arranged on the top of the outer base 81; there are two book stop bars 83, and an inner base 82 is arranged on one side of the book stop bar 83, and the inner base 82 is rotatably connected to the outer base 81.
[0067] Specifically, Figure 13-Figure 16As shown, the book stop strip assembly 8 includes a left and right group of outer bases 81 that are inserted into the desktop 9 and have an outer square and an inner circle. The top platform of the outer base 81 is provided with one or two limiting convex belts 82, and the lower part of the base is provided with two symmetrical first anti-locking buckles 812, which can reversely lock the desktop 9 to ensure that the outer base 81 is not pulled out of the desktop 9. The outer base 81 is inserted into the inner base 82, and two symmetrical second anti-locking buckles 821 are provided below the inner base 82 to lock the inner base 82 and the outer base 81 so that they are not separated. The outer base 81 can pass through the desktop 9 and be embedded together with the desktop 9, or it can be integrally injection-molded with the desktop 9, and the upper part of the inner base 82 is integrally injection-molded with the book stop strip 83.
[0068] As a preferred example, the chair back bracket assembly 51 includes a support rod 511, a chair back support rod and a bracket base, wherein the support rod 511 is hinged to the middle part of the chair back outer frame; the chair back support rod is a telescopic component, which is fixedly connected to the middle part of the support rod 511; the bracket base is fixedly connected to the lower part of the chair back support rod, and a cross brace is provided at the lower part of the single chair telescopic leg 17, and the bracket base is hinged to the cross brace through a connecting rod.
[0069] Specifically, Fig.17 As shown, the chair back bracket assembly 51 includes a support rod 511 hinged to the chair back outer frame, the middle part of the support rod 511 is fixedly connected to the telescopic sleeve groove chair back bracket support rod 512, the chair back bracket support rod 512 is fixedly connected to the inverted U-shaped foot 513, and the inverted U-shaped foot 513 is hinged to the chair leg cross support through a connecting rod.
[0070] As a preferred example, the chair back 5 and the seat seat 2 also include a rattan mat 23, a cylindrical core rod 231 and a special-shaped tube outer frame 52. The two sides of the rattan mat 23 are bent downward to extend the cylindrical core rod 231, and the cylindrical core rod 231 is inserted into the special-shaped tube outer frame 52 of the chair back or seat seat 2. The outer diameter of the cylindrical core rod 231 is larger than the opening width of the special-shaped tube outer frame 52.
[0071] Specifically, Figure 18-Figure 20 The plastic rattan mat 23 clamped in the outer frame 52 of the special-shaped tube chair back and the outer frame 2 of the special-shaped tube seat surface is processed by injection molding. The left and right edges of the rattan mat 23 are bent downward, and the lower end is expanded to be a columnar core rod 231. After the columnar core rod 231 is inserted into the inner circular hole at one end of the special-shaped tube outer frame 52 of the chair back and seat surface, the entire rattan mat is pushed to the other end. The outer diameter of the columnar core rod 231 clamped in the inner circular hole of the special-shaped tube outer frame 52 is greater than the opening width of the special-shaped tube 52, ensuring that the columnar core rod 231 is always embedded in the inner circular hole of the special-shaped tube outer frame 52, thereby preventing the plastic rattan mat 23 from being separated from the special-shaped tube outer frame 52 of the seat surface and the chair back.
[0072] Embodiment 2:
[0073] This example is a step of adjusting the height of the desktop 9 in a sitting position. Fig.21 ,
[0074] The student can unlock the height adjustment function of the desktop 9 by pushing the L-shaped safety buckle 632 of the height adjustment component inward with his hand, and can adjust the desktop 9 to different heights by gently pushing the desktop 9 with one hand and pushing and pulling the desktop 9 height adjustment rod 64 to different positions of the desktop 9 height adjustment slide 62 with the other hand.
[0075] Embodiment three:
[0076] This example is a sitting operation desktop 9 angle adjustment steps, such as Fig. 22 .
[0077] The student can unlock the angle adjustment function of the desktop 9 by pushing the L-shaped safety buckle 632 of the angle adjustment component inward with his hand, and can adjust the desktop 9 to different angles by gently pulling the front edge of the desktop 9 with one hand and pushing and pulling the angle adjustment rod 73 to different positions of the angle adjustment slide 71 of the desktop 9 with the other hand.
[0078] Embodiment 4:
[0079] This example is to operate the steps of adjusting the desktop 9 to be stored and erected. Fig.23 .
[0080] The student pushes the L-shaped safety buckle 632 inward with his hand to unlock the height adjustment function of the desktop 9, gently pulls the front edge of the desktop 9 with one hand, and gently pushes the desktop 9 height adjustment rod 64 to the bottom of the desktop 9 height adjustment slide 62 with the other hand to store the desktop 9, and then gently pushes the desktop 9 to the direction of the front seat back to store the upright desktop 9.
[0081] Embodiment five:
[0082] This example is the steps for lying down with a table and chair. Fig.24 .
[0083] The student first stores the table, chair and desktop 9 according to the above operation, and then operates to adjust the height of the desktop 9 to the lowest height; lift the backrest frame with both hands and put the backrest down to the top of the rear desktop 9, flip up the headrest 55 to the top of the backrest, and then lie down for an afternoon rest.
[0084] Embodiment six:
[0085] This example is the single chair lying operation steps, such as Fig.25 .
[0086] The student first stores the table and chair desktop 9 according to the above operation, and then adjusts the height of the desktop 9 to the lowest height; lifts the chair back frame with both hands and puts down the chair back, pulls out the headrest bracket 56, flips up the headrest 55 to the top of the chair back, and then lies down for an afternoon rest.
[0087] Embodiment seven:
[0088] This example is a combination of a single table + a table and chair + ... + a table and chair + a single chair.
[0089] Embodiment eight:
[0090] This example is a combination of single table + single chair + ... + single table + single chair.
[0091] It is known from common technical knowledge that the present invention can be implemented by other embodiments that do not deviate from its spirit or essential features. Therefore, the embodiments disclosed above are only illustrative in all respects and are not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are included in the present invention.
Claims
1. A multifunctional desk and chair for sitting, standing and lying, characterized in that: The present invention comprises a desk and chair in a one-piece form, wherein the desk and chair in a one-piece form comprises: Table and chair base (1); A telescopic leg (11) of a table and chair, wherein a first end of the telescopic leg (11) is vertically arranged in the middle of the table and chair base (1); A table and chair bracket (12), wherein the table and chair bracket (12) is arranged in the middle of the table and chair telescopic legs (11); A chair seat (2), wherein the chair seat (2) is slidably arranged on the table and chair bracket (12); A folding chair back assembly (5), the folding chair back assembly (5) being rotatably connected to the second end of the telescopic leg (11) of the table and chair; A tabletop height adjustment component (6), the tabletop height adjustment component (6) being rotatably connected to the second end of the table and chair telescopic leg (11) and the table and chair bracket (12); A desktop angle adjustment component (7), wherein the desktop angle adjustment component (7) is arranged on the desktop height adjustment component (6); A desktop (9), wherein the desktop (9) is arranged on the desktop angle adjustment component (7).
2. A multifunctional desk and chair for sitting, standing and lying according to claim 1, characterized in that: It also includes single-table desks and chairs, which include: Single table base (14); A single table telescopic leg (15), wherein a first end of the single table telescopic leg (15) is vertically arranged above the front of the single table base (14); The upper part of the single table telescopic leg (15) is hinged to the desktop height adjustment component (6) and the desktop angle adjustment component (7), and the desktop angle adjustment component (7) is provided with the desktop (9).
3. The multifunctional desk and chair for sitting, standing and lying according to claim 1, characterized in that: It also includes a single-chair desk and chair, which includes: Single chair base (16); A single chair telescopic leg (17), wherein the single chair telescopic leg (17) is vertically arranged above the single chair base (16); A single chair bracket (18), wherein the single chair bracket (18) is arranged in the middle of the single chair telescopic leg (17); The seat surface (2) is arranged above the single chair bracket (18); the inner side of the upper part of the single chair telescopic leg (17) is hinged to the folding chair back assembly (5); and the rear of the folding chair back assembly (5) is hinged to the chair back bracket assembly (51).
4. A multifunctional desk and chair for sitting, standing and lying according to claim 1 or 3, characterized in that: A book tray (3) that can be pushed and pulled forward and backward is placed below the chair surface (2), and a leg support assembly (4) is hingedly connected to the upper part of the book tray (3). The leg support assembly (4) comprises: A leg support panel (41), the leg support panel (41) is hinged to the book drawer (3), and the front part of the leg support panel (41) is slidably connected to the inner front wall of the book drawer (3), so as to hide the leg support panel (41) in the book drawer (3); A support panel (42), wherein the support panel (42) is arranged on both sides of the leg support panel (41), and the support panel (42) is used to support the leg support panel (41) on the book bin (3) after the leg support panel (41) is pulled out of the book bin (3).
5. The multifunctional desk and chair for sitting, standing and lying according to claim 3, characterized in that: The folding chair back assembly (5) comprises: A chair back, the chair back being hinged to the inner side of the telescopic legs (11) of the table and chair or the telescopic legs (17) of the single chair; A limiting column, wherein the limiting column (53) is fixedly connected to the lower part of the chair back outer frame; A seat back limiting slide (54), wherein the seat back limiting slide (54) is arranged on the inner side of the telescopic leg (11) of the table and chair or the telescopic leg (17) of the single chair, and the limiting column is slidably connected to the seat back limiting slide (54) for limiting the seat back in a vertical state or an inclined state; A headrest (55), the headrest (55) being arranged on the chair back and used for supporting the head or waist of the user; The folding backrest assembly (5) of the single-chair-shaped desk chair is provided with a headrest bracket (56) on the upper part of the backrest outer frame.
6. A multifunctional desk and chair for sitting, standing and lying according to claim 1 or 2, characterized in that: The desktop height adjustment component (6) comprises: A table and chair connecting rod (61), wherein a first end of the table and chair connecting rod (61) is hinged to the table and chair telescopic leg (11) or the single table telescopic leg (15), and a second end of the table and chair connecting rod (61) is hinged to the bottom of the table top (9); A height adjustment slide (62), the height adjustment slide (62) being arranged at the lower part of the table and chair connecting rod (61), the height adjustment slide (62) comprising teeth (621) or tooth holes (622); A height support rod (63), wherein a gear (631) is disposed at a first end of the height support rod (63), wherein the gear (631) is meshed with teeth (621) or tooth holes (622) of the height adjustment slideway (62), and a second end of the height support rod (63) is hingedly connected to the table and chair bracket (12) or the single table telescopic leg (15); A height adjustment rod (64), the height adjustment rod (64) being arranged between the two height support rods (63) and being used for synchronously adjusting the two height support rods (63); An L-shaped safety buckle (632), the L-shaped safety buckle (632) is hinged on the first end of the height support rod (63), and the L-shaped safety buckle (632) is provided with a stepped lock buckle (633) for locking and unlocking the position of the gear (631) on the height adjustment slide (62) by pushing and pulling the L-shaped safety buckle (632).
7. The multifunctional desk and chair for sitting, standing and lying according to claim 6, characterized in that: The desktop angle adjustment component (7) comprises: An angle adjustment slide (71), the angle adjustment slide (71) being arranged on the upper part of the table and chair connecting rod (61), the angle adjustment slide (71) comprising teeth (621) or tooth holes (622); An angle support rod (72), wherein a second gear (721) is disposed at a first end of the angle support rod (72), the second gear (721) is meshed with a second tooth (711) or a second tooth hole (712) of the angle adjustment slideway (71), and the second end of the angle support rod (72) is hinged to the bottom of the tabletop (9); An angle adjustment rod (73), the angle adjustment rod (73) being arranged between the two angle support rods (72) and being used for synchronously adjusting the two angle support rods (72); The first end of the angle support rod (72) is also provided with a group of L-shaped safety buckles (632) for locking and unlocking the position of the second gear (721) on the angle adjustment slideway (71).
8. A multifunctional desk and chair for sitting, standing and lying down according to claim 1 or 2, characterized in that: A book stop bar assembly (8) is hingedly connected above the desktop (9), and the book stop bar assembly (8) comprises: An outer base (81), wherein two outer bases (81) are provided, respectively disposed on both sides of the table top (9); A limiting convex belt (811), wherein the limiting convex belt (811) is arranged on the top of the outer base (81); A book blocking bar (83), wherein there are two book blocking bars (83), an inner base (82) is arranged on one side of the book blocking bar (83), and the inner base (82) is rotatably connected to the outer base (81).
9. The multifunctional desk and chair for sitting, standing and lying down according to claim 3, characterized in that: The chair back bracket assembly (51) comprises: A support rod (511), the support rod (511) being hinged to the middle part of the chair back outer frame; A seat back support rod (512), the seat back support rod (512) being a retractable component fixedly connected to the middle portion of the support rod (511); A bracket foot (513), the bracket foot (513) is fixedly connected to the lower part of the chair back support rod (512), a cross brace is arranged at the lower part of the single chair telescopic leg (17), and the bracket foot is hinged to the cross brace through a connecting rod (514).
10. The multifunctional desk and chair for sitting, standing and lying down according to claim 5, characterized in that: The chair back and seat (2) further comprise a rattan mat (23), a columnar core rod (231) and a special-shaped tube outer frame (52); the two sides of the rattan mat (23) are respectively bent downward to extend the columnar core rod (231); the columnar core rod (231) is inserted into the special-shaped tube outer frame (52) of the chair back or the seat (2); the outer diameter of the columnar core rod (231) is greater than the opening width of the special-shaped tube outer frame (52).