CN220859660U - Multifunctional portable learning table - Google Patents

Abstract

A multifunctional portable learning desk, which comprises a desk plate component 1; the support seat 2 is rotationally connected with the desk plate assembly 1; the angle adjusting assembly 3 is connected between the supporting seat 2 and the desk plate assembly 1; the support base 2 includes a seat frame 21, the main support 221 includes a receiving portion 2213, an extension member 222, and a movable connection receiving portion 2213, and includes an operation portion 2221, and the height of the support base 2 is changed by changing the volume of the extension member 222 received in the receiving portion 2213 through the operation portion 2221. According to the multifunctional portable learning table, the accommodating part is arranged on the main supporting piece and is connected with the extension piece, so that the part of the extension piece accommodated in the accommodating part is adjustable, the purpose that the height of the learning table can be adjusted is achieved, in addition, the main supporting piece is rotationally connected with the seat frame, and the supporting seat can be folded, so that the multifunctional portable learning table is convenient to carry and transport; in addition, the use of the learning desk enables a user to keep comfortable and healthy reading posture, thereby reducing the damage to vision and cervical vertebra and playing roles of preventing myopia and humpback.

Description

Multifunctional portable learning table

Technical Field

The utility model relates to the field of learning auxiliary tools, in particular to a multifunctional portable learning table.

Background

The portable study desk is often used for placing study data such as a tablet, a mobile phone and a book, so that the study data is displayed at an inclined angle, and is convenient to watch, especially, the portable study desk can liberate hands and bring considerable assistance to study of people in outdoor or on-bed scenes lacking support.

At present, the portable learning desk on the market is usually adjustable in angle through a desk top, and the supporting legs can be contained in the back of the desk plate, so that the purpose of portability is achieved, however, the height of the learning desk cannot be adjusted.

Based on this, it is desirable to provide a multifunctional portable learning table that can be adjusted in height.

Disclosure of Invention

In order to achieve the above purpose, the present utility model provides the following technical solutions:

A multifunctional portable study table comprises a table board assembly 1 with a placement surface 13; the support seat 2 is rotationally connected with the desk plate assembly 1; the angle adjusting assembly 3 is connected between the supporting seat 2 and the table plate assembly 1 and is used for fixing the angle between the supporting seat 2 and the table plate assembly 1; the supporting seat 2 comprises a seat frame 21, one side of the table assembly 1, which is opposite to the placing surface 13, is connected with a main supporting member 221, one end of the main supporting member is rotatably connected with the seat frame 21, the other end of the main supporting member is provided with a containing portion 2213, an extending member 222 is movably connected with the containing portion 2213, and an operating portion 2221 is provided, and the volume of the extending member 222 contained in the containing portion 2213 is changed through the operating portion 2221, so that the height of the supporting seat 2 is changed.

Further, the table board assembly 1 or the supporting seat 2 is rotatably connected with the blocking assembly 4 with the pressing strip 42, and has a use state protruding out of the placing surface 13 and a storage state stored on the placing surface 13 or one side of the table board assembly 1 opposite to the placing surface 13; the blocking assembly 4 comprises a pressing strip 42 and an interception member 41, and the pressing strip 42 is rotatably connected with the interception member 41; the blocking member 41 is provided with a first receiving groove 4121 and/or a first escape opening 4122 for providing an operating space for moving the pressing bar 42 out of the first receiving groove 4121.

Further, the interceptor 41 includes a baffle plate 411 and a baffle frame 412 connected to the back of the baffle plate 411; the first receiving groove 4121 is provided in the baffle plate holder 412, and in the use state, the first receiving groove 4121 is located at a side of the baffle plate holder 412 facing away from the placement surface 13; the first avoiding port 4122 communicates with the first receiving groove 4121.

Further, a second receiving groove 11 is provided in the table assembly 1 or the supporting seat 2; a second avoidance port 211 is provided in the support seat 2, for providing an operation space for moving the blocking component 4 out of the second storage groove 11.

Further, one end of the extension piece 222 is rotatably connected to the main supporting piece 221; the operation portion 2221 is a protrusion protruding from the receiving portion 2213; the accommodating portion 2213 is provided with a limiting point 2214 for keeping the other end of the extension member 222 located in the accommodating portion 2213 or located outside the accommodating portion 2213, and/or a third avoiding opening 2211, and the accommodating portion 2213 is provided with an operating portion 2221.

Further, a third receiving groove 215 for receiving the support member 22 is provided in the mount 21; a limiting buckle 214 is arranged in the third accommodating groove 215, and a buckling part 2215 matched with the limiting buckle 214 is arranged on the main supporting piece 221; the limiting buckle 214 includes a buckle portion 2141, one end of which is connected to the seat frame 21, the other end of which has a buckle edge, a reinforcing plate 2142, which is connected to the rear of the buckle portion 2141 and is disposed at an angle to the buckle portion 2141; the support assembly 22 is provided with a clasp 2212.

Further, the seat frame 21 has a limiting plate 213; the end of the main support 221 connected with the seat frame 21 is provided with a round angle, and is provided with a push-through plate 223 which cooperates with the limit plate 213 to limit the rotation between the main support 221 and the seat frame 21.

Further, the side of the seat frame 21 facing the desk board assembly 1 is provided with a receiving cavity 212; a limiting boss 216 is arranged on the seat frame 21, and a surrounding edge 12 matched with the limiting boss 216 is arranged in the circumferential direction of the desk plate assembly 1; the angle adjusting assembly 3 includes a gear part 32, which is disposed on one of the seat frame 21 and the table board assembly 1 and has a plurality of gears, and a support member 31, one end of which is rotatably connected to the rest of the seat frame 21 and the table board assembly 1, and the other end of which can be switched between a plurality of gears.

Further, the water cup holder 5 is movably connected with the supporting seat 2, and the water cup holder 5 can be accommodated in the supporting seat 2, or is accommodated in a side of the supporting seat 2 facing away from the table board assembly 1, or is detachably accommodated from the supporting seat 2.

Further, the desk lamp further comprises a lamp assembly which is rotatably connected and can be accommodated in the desk plate assembly 1 or the supporting seat 2; the lamp assembly comprises a bracket group, one end of the lamp assembly is rotatably connected with the desk plate assembly 1 or the supporting seat 2, and the lamp cap is connected with the other end of the bracket group.

According to the multifunctional portable learning table, the accommodating part is arranged on the main supporting part and is connected with the extending part, so that the part of the extending part accommodated in the accommodating part is adjustable, the purpose that the height of the learning table can be adjusted is achieved, in addition, the main supporting part is rotatably connected with the seat frame, and the supporting seat can be folded, so that the multifunctional portable learning table is convenient to carry and transport.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of a multifunctional portable learning table according to an embodiment of the present utility model.

Fig. 2 is a schematic cross-sectional view of the structure a in fig. 1.

Fig. 3 is a schematic view of the rear structure of the mount.

Fig. 4 is a schematic structural view of the multifunctional portable learning desk in one use state.

Fig. 5 is a schematic structural view of the support assembly.

Fig. 6 is a schematic structural view of the multifunctional portable learning desk in another use state.

Reference numerals illustrate:

1. a table assembly; 11. a second storage groove; 12. surrounding edges; 13. placing a surface;

2. A support base; 21. a mounting; 22. a support assembly; 211. a second avoidance port; 212. a storage chamber; 213. a limiting plate; 214. limiting buckle plates; 215. a third storage groove; 216. a limit boss; 2141. a buckle plate part; 2142. a reinforcing plate; 221. a main support member; 222. an extension member; 223. extruding through the plate; 2211. a third avoidance port; 2212. a buckling hand part; 2213. a housing part; 2214. restriction sites; 2215. a buckling part; 2221. an operation unit;

3. an angle adjustment assembly; 31. a support; 32. a gear position section;

4. A blocking assembly; 41. an interceptor; 42. pressing strips; 411. a baffle plate; 412. baffle frame; 4121. a first storage groove; 4122. a first avoidance port;

5. a water cup holder.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model and the accompanying drawings. It should be noted that the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It is to be understood that the embodiments described below by referring to the drawings are exemplary and intended to illustrate the utility model and not to be construed as limiting the utility model.

The terms "first," "second," and the like, 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, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

Unless specifically stated or limited otherwise, terms such as "mounted," "connected," "secured" and the like should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

The positional or positional relationships indicated as terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., are based on the positional or positional relationships shown in the drawings, are merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore are not to be construed as limiting the utility model. For example, a first feature "on" or "under" a second feature may be the first and second features directly contacting each other, or the first and second features indirectly contacting each other through an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

Examples

As shown in fig. 1-5, a preferred embodiment of a multifunctional portable learning table provided by the invention comprises a table board assembly 1 with a placement surface 13; the support seat 2 is rotationally connected with the desk plate assembly 1 and is used for bearing the desk plate assembly 1 and fixing or supporting the whole study desk; the angle adjusting component 3 is connected between the supporting seat 2 and the desk board component 1 and is used for fixing the angle between the supporting seat 2 and the desk board component, so that a tablet personal computer, a mobile phone or a book placed on the placing surface 13 can be moved and obliquely presented, and the viewing is convenient; and have the blocking assembly 4 of layering 42, rotate and connect the table subassembly 1 or supporting seat 2, have the user state that stands out in placing the face 13, through layering 42, make the electronic product of placing on study table, especially the page of books can not move about at will, further liberate both hands, layering 42 still has the storage state of accomodating in placing face 13 or table subassembly 1 dorsad and placing face 13 one side, thereby make study table can portable, conveniently study in the scene that lacks the support such as go out or on the bed, improve people's learning efficiency.

Specifically, the blocking assembly 4 comprises a bead 42; an interception member 41, and a pressing bar 42 rotatably connected with the interception member 41; the blocking member 41 is provided with a first receiving groove 4121 and/or a first escape opening 4122 for providing an operation space for moving the pressing bar 42 out of the first receiving groove 4121. The bead 42 preferably has a resilient strip member, one end of which is pivotally connected to the blocking member 41. In this embodiment, one end of the blocking member 41 is hinged to the table assembly 1 through a bump, and the pressing strips 42 are arranged at the other end of the blocking member 41 in pairs, so that the blocking member 41 rotates to protrude out of the placement surface 13, and a flat plate or a book placed on the placement surface 13 cannot slide off the placement surface 13 due to the existence of the blocking member 41, and further the flat plate or the book is pressed by the pressing strips 42, so that pages of a book can be effectively prevented from being turned uncontrollably due to external wind. In other embodiments, the blocking assembly 4 may include only the batten 42, and the batten 42 may be fixed by a universal head or a multi-dimensional hinge, and the same technical effect may be achieved by presetting a slot for accommodating the batten 42 in the table assembly 1.

The interceptor 41 includes a baffle plate 411 and a baffle frame 412 connected to the back of the baffle plate 411; the baffle frame 412 is located to first storage groove 4121, and under the in-service condition, first storage groove 4121 is located and is located the baffle frame 412 and is located the one side of placing face 13 dorsad, and first dodge mouthful 4122 intercommunication first storage groove 4121 to make space distribution more reasonable compacter, simultaneously, after accomodating, except baffle panel 411, can't see the surplus part of blocking subassembly 4 basically, increases the aesthetic measure of product. In this embodiment, the baffle rack 412 is provided with a set of hinge blocks for hinging with the placement surface 13, and in the use state, the first receiving groove 4121 and the first avoiding opening 4122 are located at the rear side of the interception member 41 facing away from the table assembly 1.

A second accommodating groove 11 is arranged on the desk plate assembly 1 or the supporting seat 2 and is used for accommodating the blocking assembly 4; the support seat 2 is provided with a second avoiding opening 211 for providing an operation space for moving the blocking component 4 out of the second accommodating groove 11. In this embodiment, the second receiving groove 11 is preferably disposed on the side of the table assembly 1, and correspondingly, the second avoiding opening 211 is also disposed on the edge of the table assembly 1 and below the rear blocking assembly 4.

The supporting seat 2 comprises a seat frame 21 which is connected with one side of the desk plate assembly 1, which is opposite to the placing surface 13; a main stay 221 having one end rotatably connected to the seat frame 21 and the other end provided with a receiving portion 2213; the extending member 222 is movably connected with the accommodating portion 2213, and is provided with an operation portion 2221, and the volume of the extending member 222 accommodated in the accommodating portion 2213 is changed through the operation portion 2221, so that the height of the supporting seat 2 is changed, for example, one end of the extending member 222 is hinged at the tail end of the main supporting member 221, or for example, one end of the extending member 222 is telescopically arranged at the tail end of the main supporting member 221; through the above arrangement, when the multifunctional learning desk is not used, the extension piece 222 can be stored in the storage portion 2213, and then the main support piece 221 is stored in the back of the desk board assembly 1, so that the occupied space of the multifunctional learning desk is effectively reduced, and the multifunctional learning desk is convenient to store or transport.

The operation portion 2221 is a protruding block protruding from the accommodating portion 2213, and a third avoiding opening 2211 for avoiding the operation portion 2221 is provided in the accommodating portion 2213, and is matched with the third avoiding opening 2211, so that space resources occupied by the main support 221 and the extension piece 222 after being accommodated are reduced, and the extension piece 222 is convenient to operate, and the volume ratio of the extension piece 222 in the accommodating portion 2213 is changed.

In this embodiment, one end of the extension 222 is rotatably connected to the end of the main support 221, i.e., the end remote from the table assembly 1; the receiving portion 2213 is a receiving groove, and a limiting point 2214 is disposed on a groove wall, for keeping the other end of the extension piece 222 in the receiving portion 2213 or outside the receiving portion 2213, for example, limiting points 2214 are disposed on two sides of a rotational connection portion between the extension piece 222 and the main support piece 221, respectively, when the free end of the extension piece 222 is clamped by the inner limiting point 2214 and is submerged in the receiving groove, the limiting point 2214 limits the extension piece 222 to be easily separated from the receiving groove, so as to keep the receiving state, and the extension piece 222 can be separated by external force, and when the free end of the extension piece 222 is clamped by the outer limiting point 2214, the hinge end of the extension piece 222 is submerged in the receiving groove, the limiting point 2214 limits the extension piece 222 to be easily separated from the receiving groove, so as to keep the unfolded use state, and the extension piece can be separated by external force.

A third receiving groove 215 for receiving the support member 22 is provided in the mount 21; the third accommodating groove 215 is provided with a limiting buckle plate 214, and the main supporting piece 221 is provided with a buckling part 2215 matched with the limiting buckle plate 214; the limiting buckle 214 comprises a buckle portion 2141, one end of which is connected with the seat frame 21, the other end of which is provided with a buckle edge, a reinforcing plate 2142, and the limiting buckle is connected with the rear of the buckle portion 2141 and is arranged at an angle with the buckle portion 2141, preferably at an angle of 90 degrees; the supporting component 22 is provided with a handle 2212, which is convenient for withdrawing the supporting component 22 from the third accommodating groove 215; the back of the table assembly 1 is formed with a receiving groove by the buckle plate, so that the support assembly 22 is received therein, and the support assembly 22 is kept received on the seat frame 21 by the buckle edge and the buckling part 2215. In the present embodiment, the fastening portion 2215 is preferably disposed on the main supporter 221.

The seat frame 21 has a limiting plate 213; one of the purposes of the main support 221 being connected to one end of the seat frame 21 is to make the support assembly 22 have a more stable unfolded supporting state, avoid the placing surface 13 from being knocked over due to uncontrollable collision, and further optimize the use experience of the product.

The seat frame 21 is provided with a storage cavity 212 on the side facing the desk board assembly 1, can be used for storing articles such as stationery and the like, and can also be used for storing the angle adjusting assembly 3; the seat frame 21 is provided with a limit boss 216, and the periphery of the desk plate assembly 1 is provided with a surrounding edge 12 matched with the limit boss 216, so that the desk plate assembly 1 and the seat frame 21 are overlapped into a whole to be integrated, and the attractive appearance of the product is improved; the angle adjusting component 3 comprises a gear part 32, which is arranged on one of the seat frame 21 and the desk board component 1 and provided with a plurality of gears, a supporting piece 31, one end of which is rotationally connected with the rest of the seat frame 21 and the desk board component 1, and the other end of which can be switched among the gears, in the embodiment, one end of the supporting piece 31 is hinged with the desk board component 1, the seat frame 21 is provided with the gear part 32, the gear is in a groove shape, and the other end of the supporting piece 31 can be clamped into the groove-shaped gear.

Further, the water cup holder 5 is movably connected with the supporting seat 2, such as in a sliding connection or a rotating connection, and the water cup holder 5 can be stored in the supporting seat 2, or stored on one side of the supporting seat 2 back to the table board assembly 1, or can be detached from the supporting seat 2. In this embodiment, the cup holder 5 is preferably slidably disposed on the mount 21 and located on one side of the mount 21, and the cup holder 5 is pulled out for use or pushed into the mount 21 for storage as the case may be.

Further, the desk board also comprises a lamp component which is rotatably connected and can be accommodated in the desk board component 1 or the supporting seat 2 so as to optimize the learned eye environment and prevent myopia; the lamp assembly comprises a bracket group, one end of the lamp assembly is rotatably connected with the desk plate assembly 1 or the supporting seat 2, and the lamp holder is connected with the other end of the bracket group.

According to the multifunctional portable learning table, the accommodating part is arranged on the main supporting piece and is connected with the extension piece, so that the part of the extension piece accommodated in the accommodating part is adjustable, the purpose that the height of the learning table can be adjusted is achieved, in addition, the main supporting piece is rotationally connected with the seat frame, and the supporting seat can be folded, so that the multifunctional portable learning table is convenient to carry and transport; in addition, the use of the learning desk enables a user to keep comfortable and healthy reading posture, thereby reducing the damage to vision and cervical vertebra and playing roles of preventing myopia and humpback.

The above examples illustrate only one embodiment of the utility model, which is described in more detail and is not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (10)

1. A multifunctional portable learning desk, characterized in that: comprises a desk plate assembly (1) with a placing surface (13);

the support seat (2) is rotationally connected with the desk plate assembly (1);

The angle adjusting assembly (3) is connected between the supporting seat (2) and the table plate assembly (1) and is used for fixing the angle between the supporting seat (2) and the table plate assembly (1);

the supporting seat (2) comprises a seat frame (21) which is connected with one side of the desk plate assembly (1) opposite to the placing surface (13); the support assembly (22), the support assembly (22) includes main stay piece (221), and one end is rotated and is connected seat frame (21), and the other end has acceping portion (2213), extension piece (222), swing joint acceping portion (2213), have operating portion (2221), through operating portion (2221) change extension piece (222) accomodate in the volume of acceping portion (2213), thereby change the height of supporting seat (2).

2. The multifunctional portable learning desk according to claim 1, further comprising a blocking assembly (4) with a batten (42) rotatably connected to the desk board assembly (1) or the supporting seat (2), having a use state protruding from the placement surface (13), and a storage state stored in the placement surface (13) or a side of the desk board assembly (1) facing away from the placement surface (13);

The blocking assembly (4) comprises a pressing strip (42) and an interception member (41), and the pressing strip (42) is rotationally connected with the interception member (41);

A first receiving groove (4121) and/or a first avoiding opening (4122) is formed in the interception member (41) and is used for providing an operation space for moving the pressing bar (42) out of the first receiving groove (4121).

3. The multifunctional portable learning desk of claim 2, characterized in that the interceptor (41) comprises a baffle plate (411) and a baffle frame (412) connected to the back of the baffle plate (411);

the first accommodating groove (4121) is formed in the baffle frame (412), and in a use state, the first accommodating groove (4121) is positioned at one side of the baffle frame (412) opposite to the placing surface (13);

The first avoiding port (4122) is communicated with the first containing groove (4121).

4. A multifunctional portable learning desk according to claim 3, characterized in that a second receiving groove (11) is provided in the desk plate assembly (1) or the support base (2);

The supporting seat (2) is provided with a second avoiding opening (211) for providing an operation space for moving the blocking assembly (4) out of the second containing groove (11).

5. A multi-function portable learning desk as claimed in any one of claims 1-4 wherein said extension member (222) is pivotally connected at one end to said main support member (221);

the operation part (2221) is a protruding block protruding from the accommodating part (2213);

The accommodating portion (2213) is provided with a limiting point (2214) for keeping the other end of the extension piece (222) located in the accommodating portion (2213) or located outside the accommodating portion (2213), and/or a third avoiding opening (2211) for the accommodating portion (2213) is provided with an operating portion (2221) for avoiding.

6. The multifunctional portable learning desk of claim 5, characterized in that a third receiving slot (215) for receiving the support assembly (22) is provided on the seat frame (21);

A limiting buckle plate (214) is arranged in the third storage groove (215), and a buckling part (2215) matched with the limiting buckle plate (214) is arranged on the main supporting piece (221);

The limiting buckle plate (214) comprises a buckle plate part (2141), one end of the limiting buckle plate is connected with the seat frame (21), the other end of the limiting buckle plate is provided with a buckle edge, the reinforcing plate (2142) is connected with the rear of the buckle plate part (2141), and the limiting buckle plate is arranged at an angle with the buckle plate part (2141);

the support component (22) is provided with a buckling hand part (2212).

7. The multifunctional portable learning desk of claim 5, characterized in that the seat frame (21) has a limiting plate (213);

The end of the main support (221) connected with the seat frame (21) is provided with a round angle, and is provided with a push-through plate (223) which is matched with the limiting plate (213) to limit the rotation between the main support (221) and the seat frame (21).

8. The multifunctional portable learning desk of any of claims 1-4, 6, 7, characterized in that the side of the seat frame (21) facing the desk plate assembly (1) is provided with a receiving cavity (212);

A limit boss (216) is arranged on the seat frame (21), and a surrounding edge (12) matched with the limit boss (216) is arranged in the circumferential direction of the desk plate assembly (1);

The angle adjusting assembly (3) comprises a gear part (32), is arranged on one of the seat frame (21) and the desk plate assembly (1), is provided with a plurality of gears, a supporting piece (31), one end of the supporting piece is rotationally connected with the rest of the seat frame (21) and the desk plate assembly (1), and the other end of the supporting piece can be switched among the gears.

9. The multifunctional portable learning desk according to any one of claims 1-4, 6 and 7, further comprising a water cup holder (5) movably connected to the support base (2), wherein the water cup holder (5) can be stored in the support base (2), or stored on a side of the support base (2) facing away from the desk assembly (1), or stored detachably from the support base (2).

10. The multifunctional portable learning desk according to any of the claims 1-4, 6, 7, further comprising a light assembly rotatably connected and receivable in said desk top assembly (1) or said support base (2);

the lamp assembly comprises a bracket group, one end of the lamp assembly is rotationally connected with the desk plate assembly (1) or the supporting seat (2), and the lamp holder is connected with the other end of the bracket group.