CN112914242A

CN112914242A - Desk and chair convenient to adjust

Info

Publication number: CN112914242A
Application number: CN202110225040.6A
Authority: CN
Inventors: 谢美凤
Original assignee: Individual
Current assignee: Zhejiang Shuren Intelligent Furniture Industry Co ltd
Priority date: 2021-03-01
Filing date: 2021-03-01
Publication date: 2021-06-08
Anticipated expiration: 2041-03-01
Also published as: CN112914242B

Abstract

The invention discloses a desk and chair convenient to adjust, which comprises a base, a lifting plate and a chair plate, wherein a lifting sliding transmission mechanism is arranged between a guide frame and the lifting plate, an angle adjusting mechanism is arranged between a desk plate and the lifting plate, a pair of second racks which are symmetrically arranged are fixedly arranged on two sides of a correcting frame, gears and the second racks are in meshing transmission, a third worm wheel is arranged in the middle of a third rotating shaft, a pair of third worms with opposite spiral directions are symmetrically arranged at two ends of a fourth rotating shaft, the pair of third worms are respectively in meshing transmission with the pair of third worm wheels, and a rotating disc is fixedly arranged at one end of the fourth rotating shaft. The invention is provided with the lifting sliding transmission mechanism and the angle adjusting mechanism, can adjust the height and the inclination angle of the desk plate, is provided with the moving transmission mechanism, can adjust the transverse distance between the chair plate and the desk plate, can adjust the distance between eyes and a desktop when a student sits up, corrects the sitting posture of the student, and is convenient and quick to adjust.

Description

Desk and chair convenient to adjust

Technical Field

The invention relates to the field of teaching equipment, in particular to a desk and chair convenient to adjust.

Background

A desk and chair is a desk and chair used by students in class, and is also called a student desk and chair and a school desk and chair. The desk and chair can be divided according to age, material and function. Schools in China continue to adopt traditional miscellaneous trees to manufacture desks and chairs. In the beginning of the 80 s, foreign experiences began to be learned in the eastern coastal region, and tables and chairs were manufactured by steel and wood instead of wood.

The existing desk and chair is usually fixed in structure, the height of a desk top is inconvenient to adjust, the distance between the desk and chair cannot be adjusted, students with different heights cannot be adjusted to the most appropriate position, and the sitting postures of the students cannot be improved.

Disclosure of Invention

The invention aims to provide a desk and chair convenient to adjust so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

a desk and chair convenient to adjust comprises a base, a lifting plate and a chair plate, wherein a guide frame is fixedly installed at one end of the upper end face of the base, a through second chute is formed in the lifting plate, the lifting plate is in sliding connection with the guide frame through the second chute, a lifting sliding transmission mechanism is arranged between the guide frame and the lifting plate, a desk plate is arranged on the upper end face of the lifting plate, an angle adjusting mechanism is arranged between the desk plate and the lifting plate, a first chute is formed in one end, far away from the guide frame, of the upper end face of the base, a pair of supporting frames are fixedly installed at the bottom of the chair plate, a sliding block is fixedly installed at the bottom of each supporting frame, the sliding block is slidably installed in the first chute, a moving transmission mechanism is arranged between the first chute and the sliding block, a through third chute is formed in one end, close to the guide frame, of the chair plate, and a correction frame is, the both sides fixed mounting of correcting the frame has the second rack that a pair of symmetry set up, and is a pair of rotate in the support frame and install a pair of third axis of rotation, the one end fixed mounting of third axis of rotation has the gear, gear and second rack meshing transmission, the middle part fixed mounting of third axis of rotation has the third worm wheel, and is a pair of both sides fixed mounting between the support frame has the fifth mounting bracket that a pair of symmetry set up, and is a pair of rotate between the fifth mounting bracket and install the fourth axis of rotation, the both ends symmetry of fourth axis of rotation is provided with a pair of third worm that spiral opposite direction, and is a pair of the third worm meshes the transmission with a pair of third worm wheel respectively, the one end fixed mounting of fourth axis of rotation has the rolling.

As a further scheme of the invention: the utility model discloses a lifting slide drive mechanism, including first rack, first mounting bracket, second mounting bracket, first worm, first regulation end, first worm wheel and first axis of rotation, one side fixed mounting of leading truck has first rack, a pair of first mounting bracket is vertically installed to the bottom of lifter plate, and is a pair of rotate between the first mounting bracket and install first axis of rotation, the middle part fixed mounting of first axis of rotation has first worm wheel, the left side and the first rack toothing transmission of first worm wheel, a pair of second mounting bracket is transversely installed to the bottom of lifter plate, and is a pair of rotate between the second mounting bracket and install first worm, the upside meshing transmission of first worm and first worm wheel, first regulation end is installed to the one end of first worm.

As a further scheme of the invention: angle adjustment mechanism includes third mounting bracket, second axis of rotation, second worm wheel, link, fourth mounting bracket, second worm and second regulation end, a pair of third mounting bracket is vertically installed to the up end of lifter plate, and is a pair of fixed mounting has the second axis of rotation between the third mounting bracket, a pair of link is vertically installed, and is a pair of the link is rotated with the both ends of second axis of rotation respectively to the link, a pair of fourth mounting bracket is transversely installed, and is a pair of the fourth mounting bracket is rotated between the fourth mounting bracket and is installed the second worm, second worm and the meshing transmission of second worm wheel, the second regulation end is installed to the one end of second worm.

As a further scheme of the invention: the movable transmission mechanism comprises an adjusting groove, a threaded rod and a third adjusting end, the adjusting groove is formed in the middle of the upper end face of the base, the threaded rod is rotatably installed in the first sliding groove, the sliding block is in threaded connection with the threaded rod, the third adjusting end is installed at one end of the threaded rod, and the third adjusting end is arranged in the adjusting groove.

As a further scheme of the invention: a pair of shielding frames is fixedly mounted on the upper end face of one side, close to the guide frame, of the chair plate, and the pair of shielding frames are symmetrically arranged on two sides of the third sliding groove.

As a further scheme of the invention: and a backup plate is arranged on one side of the chair plate, which is far away from the guide frame.

As a further scheme of the invention: a plurality of universal wheels which are symmetrically arranged are installed at the bottom of the base, and pedals are installed in the universal wheels.

Compared with the prior art, the invention has the beneficial effects that: the invention is provided with the lifting sliding transmission mechanism and the angle adjusting mechanism, can adjust the height and the inclination angle of the desk plate, is provided with the moving transmission mechanism, can adjust the transverse distance between the chair plate and the desk plate, can adjust the distance between eyes and a desktop when a student sits up, corrects the sitting posture of the student, and is convenient and quick to adjust.

Drawings

Fig. 1 is a schematic structural diagram of a desk and chair convenient to adjust.

Fig. 2 is a schematic structural diagram of a base of a desk and chair convenient to adjust.

Fig. 3 is a schematic structural view of a lifting plate of a desk and chair convenient to adjust.

Fig. 4 is a schematic structural view of a lifting sliding transmission mechanism of a desk and chair convenient to adjust.

Fig. 5 is a schematic structural view of an angle adjusting mechanism of a desk and chair convenient to adjust.

Fig. 6 is a schematic structural view of a movement transmission mechanism of a desk and chair convenient to adjust.

Figure 7 is a schematic view of the transmission connection of an adjustable correcting frame for desk and chair.

In the figure: 1. a base; 11. a guide frame; 111. a first rack; 12. a first chute; 13. an adjustment groove; 14. a universal wheel; 141. a foot pedal; 2. a lifting plate; 21. a second chute; 22. a first mounting bracket; 23. a second mounting bracket; 24. a third mounting bracket; 25. a first worm; 251. a first adjusting end; 26. a first worm gear; 261. a first rotating shaft; 3. a second rotating shaft; 31. a second worm gear; 4. a table plate; 41. a connecting frame; 42. a fourth mounting bracket; 5. a second worm; 51. a second adjusting end; 6. a threaded rod; 61. a third adjusting end; 7. a chair plate; 71. a support frame; 711. a slider; 72. a third chute; 73. a shielding frame; 74. a fifth mounting bracket; 75. a backup plate; 8. a correcting frame; 81. a second rack; 82. a third rotating shaft; 83. a gear; 84. a third worm gear; 9. a fourth rotating shaft; 91. a third worm; 92. and (6) rotating the disc.

Detailed Description

In the description of the present invention, it is to be understood that the terms "upper", "lower", "top", "bottom", "left", "right", "lateral", "longitudinal", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element 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.

Furthermore, the terms "first", "second", "third", "fourth", "fifth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", "third", "fourth", "fifth" may explicitly or implicitly include one or more of the features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

Example 1:

referring to fig. 1 to 7, a desk and chair convenient to adjust includes a base 1, a lifting plate 2 and a chair plate 7, wherein one end of the upper end surface of the base 1 is fixedly installed with a guide frame 11 through a screw, a through second chute 21 is opened in the lifting plate 2, the lifting plate 2 is slidably connected with the guide frame 11 through the second chute 21, a lifting sliding transmission mechanism is arranged between the guide frame 11 and the lifting plate 2, a table plate 4 is arranged on the upper end surface of the lifting plate 2, an angle adjustment mechanism is arranged between the table plate 4 and the lifting plate 2, a first chute 12 is opened at one end of the upper end surface of the base 1 far away from the guide frame 11, a pair of support frames 71 are fixedly installed at the bottom of the chair plate 7 through a screw, a slide block 711 is fixedly installed at the bottom of the support frames 71 through a screw, the slide block 711 is slidably installed in the first chute 12, a moving transmission mechanism is arranged between the first chute 12 and the slide block 711, one end of the chair plate 7 close to the guide frame 11 is provided with a through third sliding groove 72, the third sliding groove 72 is internally provided with a correcting frame 8, two sides of the correcting frame 8 are fixedly provided with a pair of symmetrical second racks 81, a pair of supporting frames 71 are rotatably provided with a pair of third rotating shafts 82, one end of each third rotating shaft 82 is fixedly provided with a gear 83, the gear 83 is meshed with the second racks 81 for transmission, the middle of each third rotating shaft 82 is fixedly provided with a third worm gear 84, two sides of each pair of supporting frames 71 are fixedly provided with a pair of symmetrical fifth mounting frames 74, a pair of fifth mounting frames 74 are rotatably provided with a fourth rotating shaft 9, two ends of each fourth rotating shaft 9 are symmetrically provided with a pair of third worms 91 with opposite spiral directions, and a pair of third worms 91 are meshed with a pair of third worm gears 84 respectively for transmission, a rotating disc 92 is fixedly mounted at one end of the fourth rotating shaft 9.

The lifting sliding transmission mechanism comprises a first rack 111, a first mounting rack 22, a second mounting rack 23, a first worm 25, a first adjusting end 251, a first worm wheel 26 and a first rotating shaft 261, a first rack 111 is fixedly installed at one side of the guide frame 11, a pair of first installation frames 22 is longitudinally installed at the bottom of the lifting plate 2, a first rotating shaft 261 is rotatably installed between the pair of first installation frames 22, a first worm wheel 26 is fixedly installed in the middle of the first rotating shaft 261, the left side of the first worm wheel 26 is in meshing transmission with the first rack 111, a pair of second mounting brackets 23 are transversely mounted at the bottom of the lifting plate 2, a first worm 25 is rotatably mounted between the pair of second mounting brackets 23, the first worm 25 is in meshed transmission with the upper side of the first worm wheel 26, and a first adjusting end 251 is installed at one end of the first worm 25.

Angle adjustment mechanism includes third mounting bracket 24, second axis of rotation 3, second worm wheel 31, link 41, fourth mounting bracket 42, second worm 5 and second regulation end 51, a pair of third mounting bracket 24 is vertically installed to the up end of lifter plate 2, and is a pair of fixed mounting has second axis of rotation 3 between the third mounting bracket 24, a pair of link 41 is vertically installed to the bottom of table 4, and is a pair of link 41 is rotated with the both ends of second axis of rotation 3 respectively and is connected, a pair of fourth mounting bracket 42 is transversely installed to the bottom of table 4, and is a pair of rotate between the fourth mounting bracket 42 and install second worm 5, second worm 5 and second worm wheel 31 mesh transmission, second regulation end 51 is installed to the one end of second worm 5.

Remove drive mechanism and include adjustment tank 13, threaded rod 6 and third regulation end 61, open at the middle part of base 1 up end has adjustment tank 13, rotatory threaded rod 6 of installing in first spout 12, slider 711 and threaded rod 6 threaded connection, third regulation end 61 is installed to the one end of threaded rod 6, third regulation end 61 sets up in adjustment tank 13.

Working principle of example 1: according to students with different heights and body types, the first worm 25 can be driven to rotate by rotating the first adjusting end 251, the first worm 25 is in meshing transmission with the upper side of the first worm wheel 26 to drive the first worm wheel 26 to rotate, the left side of the first worm wheel 26 is in meshing transmission with the first rack 111, so that the first worm wheel 26 rotates and simultaneously drives the lifting plate 2 to slide up and down along the guide frame 11 through the first rotating shaft 261, the heights of the lifting plate 2 and the table plate 4 are adjusted, the students with different heights can conveniently use the desk plate, the second worm 5 can be driven to rotate by rotating the second adjusting end 51, the second worm 5 is in meshing transmission with the second worm wheel 31, the second worm 5 rotates around the axis of the second rotating shaft 3 while rotating and drives the table plate 4 to rotate obliquely through the connecting frame 41, the inclination angle of the table plate 4 is adjusted, and the students can conveniently adjust to a proper writing angle, through rotating third regulation end 61 in adjustment tank 13 department, it rotates to drive threaded rod 6, make slider 711 slide in first spout 12, thereby adjust the lateral distance between chair and the table, the student of the different sizes of being convenient for uses, it rotates to drive fourth axis of rotation 9 through rotatory rolling disc 92, drive a pair of third worm wheel 84 antiport through a pair of third worm 91, make a pair of third axis of rotation 82 antiport, it drives a pair of gear 83 antiport, gear 83 and the meshing transmission of second rack 81, drive second rack 81 and correction frame 8 lift removal, thereby adjust the height of lifting of correcting frame 8, be convenient for the student of different heights to use, it sits in the student's of chair 7 front side to correct frame 8, prevent that student's eyes and table 4 are too close, correct student's position of sitting, thereby can effectively prevent myopia.

Example 2:

referring to fig. 1 to 7, on the basis of embodiment 1, a pair of blocking frames 73 is fixedly installed on an upper end surface of one side of the chair plate 7 close to the guide frame 11, the pair of blocking frames 73 are symmetrically arranged on two sides of the third sliding groove 72, the pair of blocking frames 73 can prevent two legs of a student sitting on the chair plate from touching the second rack 81, a back plate 75 is installed on one side of the chair plate 7 far away from the guide frame 11, the student can lean backwards on one side of the back plate 75, a plurality of symmetrically arranged universal wheels 14 are installed at the bottom of the base 1, and pedals 141 are installed in the universal wheels 14, so that the position of the desk and chair convenient to adjust can be moved and fixed.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The desk and chair convenient to adjust comprises a base (1), a lifting plate (2) and a chair plate (7) and is characterized in that a guide frame (11) is fixedly mounted at one end of the upper end face of the base (1), a through second sliding groove (21) is formed in the lifting plate (2), the lifting plate (2) is in sliding connection with the guide frame (11) through the second sliding groove (21), a lifting sliding transmission mechanism is arranged between the guide frame (11) and the lifting plate (2), a desk plate (4) is arranged on the upper end face of the lifting plate (2), an angle adjusting mechanism is arranged between the desk plate (4) and the lifting plate (2), a first sliding groove (12) is formed in one end, far away from the guide frame (11), of the upper end face of the base (1), a pair of supporting frames (71) is fixedly mounted at the bottom of the chair plate (7), and a sliding block (711) is fixedly mounted at the bottom of the supporting frames (71), the chair comprises a sliding block (711) and a sliding plate (7), wherein the sliding block (711) is arranged in a first sliding groove (12), a movable transmission mechanism is arranged between the first sliding groove (12) and the sliding block (711), one end, close to a guide frame (11), of the chair plate (7) is provided with a through third sliding groove (72), a straightening frame (8) is arranged in the third sliding groove (72) in a sliding manner, a pair of second racks (81) which are symmetrically arranged are fixedly arranged on two sides of the straightening frame (8), a pair of third rotating shafts (82) are rotatably arranged in a support frame (71), a gear (83) is fixedly arranged at one end of each third rotating shaft (82), the gear (83) is meshed with the second racks (81) for transmission, a third worm wheel (84) is fixedly arranged in the middle of each third rotating shaft (82), a pair of fifth mounting frames (74) which are symmetrically arranged are fixedly arranged on two sides between the support, a fourth rotating shaft (9) is rotatably installed between the fifth installation frame (74), a pair of third worms (91) with opposite spiral directions are symmetrically arranged at two ends of the fourth rotating shaft (9), the third worms (91) are respectively in meshing transmission with a pair of third worm wheels (84), and a rotating disc (92) is fixedly installed at one end of the fourth rotating shaft (9).

2. The desk and chair convenient to adjust as claimed in claim 1, wherein the lifting sliding transmission mechanism comprises a first rack (111), a first mounting rack (22), a second mounting rack (23), a first worm (25), a first adjusting end (251), a first worm wheel (26) and a first rotating shaft (261), the first rack (111) is fixedly mounted on one side of the guide frame (11), a pair of first mounting racks (22) is longitudinally mounted at the bottom of the lifting plate (2), the first rotating shaft (261) is rotatably mounted between the pair of first mounting racks (22), the first worm wheel (26) is fixedly mounted in the middle of the first rotating shaft (261), the left side of the first worm wheel (26) is in meshing transmission with the first rack (111), and a pair of second mounting racks (23) is transversely mounted at the bottom of the lifting plate (2), a first worm (25) is rotatably mounted between the pair of second mounting frames (23), the first worm (25) is in meshing transmission with the upper side of the first worm wheel (26), and a first adjusting end head (251) is mounted at one end of the first worm (25).

3. The desk and chair convenient to adjust as claimed in claim 1, wherein the angle adjusting mechanism comprises a third mounting frame (24), a second rotating shaft (3), a second worm wheel (31), a connecting frame (41), a fourth mounting frame (42), a second worm (5) and a second adjusting end (51), a pair of the third mounting frame (24) is longitudinally mounted on the upper end surface of the lifting plate (2), the second rotating shaft (3) is fixedly mounted between a pair of the third mounting frames (24), a pair of the connecting frames (41) is longitudinally mounted at the bottom of the desk plate (4), the pair of the connecting frames (41) are respectively rotatably connected with two ends of the second rotating shaft (3), a pair of the fourth mounting frame (42) is transversely mounted at the bottom of the desk plate (4), and the second worm (5) is rotatably mounted between a pair of the fourth mounting frame (42), the second worm (5) is in meshed transmission with the second worm wheel (31), and a second adjusting end (51) is installed at one end of the second worm (5).

4. The desk and chair convenient to adjust as claimed in claim 1, wherein the movement transmission mechanism comprises an adjusting groove (13), a threaded rod (6) and a third adjusting end (61), the adjusting groove (13) is formed in the middle of the upper end face of the base (1), the threaded rod (6) is rotatably mounted in the first sliding groove (12), the sliding block (711) is in threaded connection with the threaded rod (6), the third adjusting end (61) is mounted at one end of the threaded rod (6), and the third adjusting end (61) is arranged in the adjusting groove (13).

5. The adjustable desk and chair as claimed in claim 1, wherein a pair of shielding frames (73) are fixedly installed on the upper end surface of one side of the chair plate (7) close to the guide frame (11), and the pair of shielding frames (73) are symmetrically arranged on two sides of the third sliding groove (72).

6. An adjustable desk and chair as claimed in claim 5 wherein a back rest (75) is mounted to the side of the chair plate (7) remote from the guide frame (11).

7. An adjustable desk and chair as claimed in claim 1, wherein the base (1) is provided at the bottom with a plurality of symmetrically arranged universal wheels (14), and the universal wheels (14) are provided with foot pedals (141).