CN220045216U - Portable bed table - Google Patents

Abstract

The utility model provides a portable bed table, includes the table, and the periphery of table is equipped with the baffle, and the bottom surface both sides of table are equipped with first slide rail and second slide rail respectively, slide on first slide rail and the second slide rail and dispose the fourth table leg that is used for supporting, the table bottom is provided with first table leg, second table leg and the third table leg that is used for supporting respectively, the baffle is through setting up at the inside elevating gear of table drive and stretch out and draw back from top to bottom; when the desk is used, the first desk leg, the second desk leg and the third desk leg are opened, the lifting device drives the baffle to move upwards when the third desk leg is opened, the second desk leg and the third desk leg are retracted when the desk is lifted, the fourth desk leg is opened through sliding of the sliding rail arranged on the bottom surface of the desk plate, and at the moment, the desk bearing legs are the first desk leg and the fourth desk leg; the utility model can enable people to easily get up without moving the whole table on the bed, thereby greatly reducing the trouble of moving the table back and forth; meanwhile, the object on the table top can be prevented from sliding off, and unnecessary trouble is reduced.

Description

Portable bed table

Technical Field

The utility model relates to a bed table, in particular to a portable bed table.

Background

Along with the increase of the study and working pressure of people, the study and working time of people is gradually prolonged, and apart from working and study before a desk, a part of people can choose to work and study on a bed, and the bed desk is born. The general bed table is a small table plate with foldable table legs, the table legs are folded to be placed on one side when the table is idle, the table legs are unfolded to be placed on a bed when the table is used, people can place books, computers and other articles on the table plate, and the ideal of easy 'on-bed office study' is truly realized.

A number of problems occur with conventional bed tables during use; when people use the table on the bed, the legs are arranged below the table plate and between the legs, and when people need to get up, the whole table needs to be moved to other positions laboriously, so that people can get up; if the table is provided with objects which are easy to spill, such as a water cup, the objects are firstly moved and placed, then the table is moved and placed, and after the objects come back, the table is again moved to a proper position of the leg, so that the whole process is complicated and accidents are easy to occur; secondly, the position of the table needs to be adjusted in the process of using the table, and objects on the table top easily slide on the flat table top in the process of adjusting the position.

Lazy tables with adjustable table top angle disclosed in patent application number [ CN218278966U ]; the table comprises a base and a table plate arranged on the base, wherein the table plate is also connected with a supporting plate, and a rotating state and a fixing state are arranged between the table plate and the supporting plate through a connector; it does not solve the problems of people getting up and preventing objects from slipping off the table top.

In addition, a folding student is with table on bed that is disclosed in the patent application of application number [ CN205671777U ], including the bedstead, the surface of bedstead is connected with the support frame through the fixation clamp, the inside equidistance of fixation clamp is equipped with small-size gyro wheel, there is the telescopic link in the inside of support frame, the upper portion of telescopic link is equipped with the trepanning, the bracing piece has been cup jointed to the inside in trepanning, the fixed surface of bracing piece installs the desktop. The foldable desk for the student bed comprises a telescopic and rotatable desktop, when the desk is used, students only need to fix the desk with the bedstead through the fixing clamp, the desk can move along the edge of the bedstead to adjust the distance between the desk and a user, and the bracket of the desk is telescopic, can adjust the height up and down, and is convenient for the students with different heights to use; but the utility model is combined with the bed body, has the defects of different related fields, limited application range, non-foldable storage and the like, and can not meet the requirements of most common people.

Disclosure of Invention

In order to overcome the defects in the prior art, the utility model aims to provide the portable bed table, wherein the telescopic baffle is arranged on the periphery of the table plate, the table legs are arranged on the sliding rail at the bottom of the table plate, and the baffle is driven to move up and down by the lifting device arranged at the bottom of the table plate, so that people can easily rise without moving the whole bed table, and the trouble of moving the desk back and forth by people is greatly reduced; meanwhile, the object on the table top can be prevented from sliding off, and unnecessary trouble is reduced.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

the utility model provides a portable bed table, includes table 1, the periphery of table 1 is provided with baffle 1b, the bottom surface both sides of table 1 are provided with first slide rail 1c and second slide rail 1d respectively, sliding configuration has the fourth table leg 3d that is used for supporting on first slide rail 1c and the second slide rail 1d, and table 1 bottom surface is provided with first table leg 3a, second table leg 3b and the third table leg 3c that are used for supporting respectively, baffle 1b drives the upper and lower flexible through setting up at the inside elevating gear 6 of table 1.

The first table leg 3a, the second table leg 3b and the third table leg 3c are respectively connected with the bottom surface of the table board 1 through the connecting piece 2, the fourth table leg 3d is connected with the first slide rail 1c and the second slide rail 1d through the connecting piece 2, and the fastening pieces 4 are respectively configured between the first table leg 3a, the second table leg 3b, the third table leg 3c and the fourth table leg 3d and the connecting piece 2.

The connecting pieces 2 comprise a first connecting piece 2a, a second connecting piece 2b, a third connecting piece 2c and a fourth connecting piece 2d which are arranged at four corners of the bottom surface of the table board 1, and a fifth connecting piece 2e and a sixth connecting piece 2f which are respectively arranged at the bottom surface of the table board 1 and positioned at two side ends of the first sliding rail 1c and the second sliding rail 1 d;

the first table leg 3a is of a u-shaped structure, and two vertexes of the top of the u-shaped structure are connected with the table plate 1 through a first connecting piece 2a and a second connecting piece 2b respectively;

the second table leg 3b and the third table leg 3c are in a supporting rod structure, the second table leg 3b is connected with the table board 1 through a third connecting piece 2c, and the third table leg 3c is connected with the table board 1 through a fourth connecting piece 2 d; the fourth leg 3d is of a u-shaped structure, two vertexes at the top of the u-shaped structure are connected with the first sliding rail 1c and the second sliding rail 1d through a fifth connecting piece 2e and a sixth connecting piece 2f respectively, and the fourth leg 3d slides along the first sliding rail 1c and the second sliding rail 1 d.

The first sliding rail 1c and the second sliding rail 1d are respectively connected with the fourth table leg 3d and the table board 1 through a fifth connecting piece 2e and a sixth connecting piece 2f, and the fifth connecting piece 2e and the sixth connecting piece 2f are connected with the fourth table leg 3d through a fastening piece 4.

The baffle 1b is movably connected with the table 1 through a first sliding rail component 1b-1 arranged at the rear side of the table 1 and positioned on the baffle 1b, and a second sliding rail component 1b-2 and a third sliding rail component 1b-3 which are respectively arranged at two sides of the table 1 and positioned on the baffle 1 b.

The inside of the desk plate 1 is respectively provided with a sliding rail groove matched with a first sliding rail component 1b-1, a second sliding rail component 1b-2 and a third sliding rail component 1b-3, wherein the first sliding rail component 1b-1 is matched with a first sliding rail groove 1j arranged in the rear side of the desk plate 1, the second sliding rail component 1b-2 is matched with a second sliding rail groove 1k arranged in one side of the desk plate 1, the third sliding rail component 1b-3 is matched with a third sliding rail groove 1l arranged in the other side of the desk plate 1, and then the baffle plate 1b is connected with the desk plate 1 and can realize slidable actions.

The table 1 is internally provided with a first lifting groove 1m and a second lifting groove 1n for placing a lifting device 6, the lifting device 6 comprises a gear rod 5 arranged between a first connecting piece 2a and a second connecting piece 2b, two ends of the gear rod 5 and a fastener 4 arranged on the inner side of the first connecting piece 2a and the second connecting piece 2b are of an integrated structure, a first rack 6a and a second rack 6b are respectively arranged at the gear of the gear rod 5, the upper end of the first rack 6a is provided with a first lifting plate 6c vertical to the first rack 6a, the upper end of the second rack 6b is provided with a second lifting plate 6d vertical to the second rack 6b, two ends of the first lifting plate 6c and the second lifting plate 6d are respectively connected with two sides of the baffle 1b, gears of the gear rod 5 are in meshed connection with the first rack 6a and the second rack 6b, the first rack 6a and the first lifting plate 6c and the second rack 6d are of an integrated structure, the first rack 6a and the second rack 6d and the second lifting plate 6d are of the integrated structure, the first rack 6a and the second rack 6b are arranged in the first lifting plate 6a and the second lifting plate 6b are in a lifting device 3, and the lifting device is connected with the first leg 1 a lifting device and the second leg 3a lifting device is arranged on the first lifting plate 1 a lifting groove.

The bottom surface of the table plate 1 is provided with a first table leg placing groove 1e matched with the fourth table leg 3 d; the two sides of the first table leg placing groove 1e are respectively provided with a second table leg placing groove 1f and a third table leg placing groove 1g which are matched with the first table leg 3a, the first table leg placing groove 1e is used for placing the recovered fourth table leg 3d, and the second table leg placing groove 1f and the third table leg placing groove 1g are used for placing the recovered first table leg 3a.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the utility model, the first sliding rail 1c and the second sliding rail 1d are arranged on the bottom surface of the desk plate 1, and the fourth desk leg 3d is arranged on the first sliding rail 1c and the second sliding rail 1d, so that the convenient-to-move bed desk is realized, the integral horizontal displacement of the desk can be completed through a simple mechanical principle, and the people can get up to move on the premise of not moving the positions of the two legs, thereby avoiding the complicated process of integrally moving the desk when the people get up.

2. According to the utility model, the baffle plate 1b is arranged on the periphery of the table plate 1, when the first table leg 3a is in a supporting state, the baffle plate 1b is in a lifting state through the linkage of the gear rod 5, the first lifting plate 6c and the second lifting plate 6d, so that a table object can be prevented from accidentally sliding down, and when the first table leg 3a is retracted, the baffle plate 1b is in a retracted state and is in the same plane with the table plate 1, so that a flat plate surface is formed, and the table plate is convenient to store.

Drawings

Fig. 1 is a schematic diagram of the overall structure of the present utility model.

Fig. 2 is a schematic view of the bottom structure of the present utility model.

Fig. 3 is a schematic view of the internal structure of the present utility model.

Fig. 4 is a schematic cross-sectional view of the first sliding rail 1c and the fifth connecting member 2e of the present utility model.

Fig. 5 is a schematic structural view of the lifting device 6 of the present utility model.

Fig. 6 is a positional relationship diagram of the baffle plate 1b and the lifting device 6 according to the present utility model.

Fig. 7 is an enlarged view of a third baffle assembly 1b-3 of the present utility model.

FIG. 8 is a schematic view of a rail track of a baffle assembly of the present utility model; fig. 8 (a) is a positional relationship diagram of the first slide rail groove 1j and the second slide rail groove 1 k; fig. 8 (b) is a positional relationship diagram of the first rail groove 1j and the third rail groove 1 l.

Fig. 9 is a cross-sectional view of the second slide rail groove 1k of the present utility model.

FIG. 10 is a schematic diagram of the overall process of the use of the present utility model; wherein, fig. 10 (a) is a folded state of the table on the bed; figure 10 (b) shows the normal use of the table in bed; FIG. 10 (c) is a table movement preparation form 1; FIG. 10 (d) is a table movement preparation form 2; fig. 10 (e) shows a movement completion mode of the table on the bed.

Figure 11 is a cross-sectional elevation view of the table of the utility model in figure 1.

Figure 12 is a cross-sectional elevation view of the table body of the present utility model, as shown in figure 2.

Figure 13 is a cross-sectional elevation view of the table body of the present utility model in figure 3.

FIG. 14 is a schematic view of a connection structure according to the present utility model; fig. 14 (a) is a schematic diagram of a connection structure of the connector 2 according to the present utility model, and fig. 14 (b) is a schematic diagram of a connection structure of the leg 3 according to the present utility model.

Wherein: 1, a table plate; 1b baffle plates; 1b-1 a first slide rail assembly; 1b-2 a second slide rail assembly; 1b-3 a third slide rail assembly; 1c a first slide rail; 1d a second slide rail; 1e a first leg placement groove; 1f a second leg placement groove; 1g of a third table leg placing groove; 1h a first connector placement slot; 1i a second connector placement slot; 1j a first slide rail groove; 1k second slide rail grooves; 1l of a third slide rail groove; 1m of a first lifting groove; 1n second lifting grooves; 2a connecting piece; 2a first connector; 2b a second connector; 2c a third connector; 2d fourth connection; 2e fifth connection; 2f a sixth connector; 2A first holes; 2B a second hole; 3, table legs; 3a first leg; 3b a second leg; 3c, a third table leg; a 3d fourth leg; 4, fastening pieces; 5 gear lever; 6 lifting devices; 6a first rack; 6b a second rack; 6c a first lifting plate; and 6d, a second lifting plate.

Detailed Description

The technical scheme of the utility model is further described in detail below with reference to examples.

As shown in fig. 1 and 2, a portable bed table comprises a table board 1, a baffle 1b is arranged on the periphery of the table board 1, a first sliding rail 1c and a second sliding rail 1d are respectively arranged on two sides of the bottom surface of the table board 1, fourth table legs 3d for supporting are slidably arranged on the first sliding rail 1c and the second sliding rail 1d, a first table leg 3a, a second table leg 3b and a third table leg 3c for supporting are respectively arranged on the bottom surface of the table board 1, and the baffle 1b drives the upper and lower telescopic parts through a lifting device 6 arranged inside the table board 1.

The first table leg 3a, the second table leg 3b and the third table leg 3c are respectively connected with the bottom surface of the table board 1 through the connecting piece 2, the fourth table leg 3d is connected with the first slide rail 1c and the second slide rail 1d through the connecting piece 2, and the fastening pieces 4 are respectively configured between the first table leg 3a, the second table leg 3b, the third table leg 3c and the fourth table leg 3d and the connecting piece 2.

The connecting pieces 2 comprise a first connecting piece 2a, a second connecting piece 2b, a third connecting piece 2c and a fourth connecting piece 2d which are arranged at four corners of the bottom surface of the table board 1, and a fifth connecting piece 2e and a sixth connecting piece 2f which are respectively arranged at the bottom surface of the table board 1 and positioned at two side ends of the first sliding rail 1c and the second sliding rail 1 d;

the first table leg 3a is of a u-shaped structure, and two vertexes of the top of the u-shaped structure are connected with the table plate 1 through a first connecting piece 2a and a second connecting piece 2b respectively;

as shown in fig. 2, the first sliding rail 1c and the second sliding rail 1d connect the fourth leg 3d with the table board 1 through a fifth connecting piece 2e and a sixth connecting piece 2f, and the fifth connecting piece 2e and the sixth connecting piece 2f are connected with the fourth leg 3d through a fastening piece 4, so as to form a slidable leg.

As shown in fig. 2, the bottom surface of the table board 1 and the two side ends of the first sliding rail 1c and the second sliding rail 1d are configured with a first leg placement groove 1e matched with the fourth leg 3d along the direction of the second sliding rail component 1 b-2; the two sides of the first table leg placing groove 1e are respectively provided with a second table leg placing groove 1f and a third table leg placing groove 1g which are matched with the first table leg 3a, the first table leg placing groove 1e is used for placing the recovered fourth table leg 3d, and the second table leg placing groove 1f and the third table leg placing groove 1g are used for placing the recovered first table leg 3a.

Further, the bottom surface of the table board 1 is provided with a first connector placement groove 1h and a second connector placement groove 1i for fixing the first connector 2a and the second connector 2b, respectively.

Further, as shown in fig. 2, the table 1 is a smooth table top, the periphery of the table 1 is provided with a baffle 1b, the bottom surface of the table 1 is provided with a first sliding rail 1c, a second sliding rail 1d, a first leg placing groove 1e, a second leg placing groove 1f, a third leg placing groove 1g, a first connecting piece placing groove 1h and a second connecting piece placing groove 1i, the bottom surface of the table 1 and the connecting pieces 2 are connected by wood screws, the number of the connecting pieces is four, the first connecting pieces 2a and the second connecting pieces 2b are all connected with the first leg 3a, the third connecting pieces 2c are connected with the second leg 3b, the fourth connecting pieces 2d are connected with the third leg 3c, and then the table 1 is connected with the leg 3.

As shown in fig. 3, the baffle 1b is movably connected with the table 1 through a first sliding rail assembly 1b-1 disposed at the rear side of the table 1 and located on the baffle 1b, and a second sliding rail assembly 1b-2 and a third sliding rail assembly 1b-3 respectively disposed at two sides of the table 1 and located on the baffle 1 b.

As shown in fig. 4, the second leg 3b and the third leg 3c are in a strut structure, the second leg 3b is connected with the table board 1 through a third connecting piece 2c, and the third leg 3c is connected with the table board 1 through a fourth connecting piece 2 d; the fourth leg 3d is of a u-shaped structure, two vertexes at the top of the u-shaped structure are connected with the first sliding rail 1c and the second sliding rail 1d through a fifth connecting piece 2e and a sixth connecting piece 2f respectively, and the fourth leg 3d slides along the first sliding rail 1c and the second sliding rail 1 d.

As shown in fig. 7, 8 and 9, the table 1 is provided with slide rail grooves matched with a first slide rail assembly 1b-1, a second slide rail assembly 1b-2 and a third slide rail assembly 1b-3, wherein the first slide rail assembly 1b-1 is matched with a first slide rail groove 1j arranged in the rear side of the table 1, the second slide rail assembly 1b-2 is matched with a second slide rail groove 1k arranged in one side of the table 1, and the third slide rail assembly 1b-3 is matched with a third slide rail groove 1l arranged in the other side of the table 1, so that the baffle plate 1b is connected with the table 1 and can realize slidable motion.

As shown in fig. 11, fig. 12, fig. 13, a first lifting groove 1m and a second lifting groove 1n for placing a lifting device 6 are formed in the table plate 1, as shown in fig. 5, fig. 6, fig. 7, the lifting device 6 comprises a gear rod 5 arranged between the first connecting piece 2a and the second connecting piece 2b, two ends of the gear rod 5 are in an integrated structure with the fastening piece 4 on the inner side of the first connecting piece 2a and the second connecting piece 2b, a first rack 6a and a second rack 6b are respectively arranged at the gear position of the gear rod 5, a first lifting plate 6c perpendicular to the first rack 6a is arranged at the upper end of the first rack 6a, a second lifting plate 6d perpendicular to the second rack 6b is arranged at the upper end of the second rack 6b, two ends of the first lifting plate 6c and the second lifting plate 6d are respectively connected with two sides of the baffle plate 1b, gears of the gear rod 5 are meshed with the first rack 6a and the second rack 6b, the first rack 6a and the second rack 6b are connected with the first lifting plate 6c and the second rack 6b, the first rack 6a and the second rack 6b are respectively arranged at the inner side of the first lifting plate 6a and the second lifting plate 6b, the first lifting plate 6a and the second rack 6b are in a linkage device is arranged at the first lifting plate 6c and the second lifting plate 6b, and the second lifting plate 3d, and the first lifting plate 3 is arranged at the second lifting plate 3 n, and the lifting plate is arranged at the lifting plate 3.

Further, the first lifting plate 6c and the second lifting plate 6d are connected to the baffle plate 1b by wood screws.

Further, the first leg 3a is linked with the lifting device 6 in the opening process, and as the first leg 3a is opened, the gear rod 5 rotates anticlockwise to drive the first rack 6a and the second rack 6b meshed with the gear rod to lift, the first rack 6a and the second rack 6b drive the first lifting plate 6c and the second lifting plate 6d to lift, the lifting amplitude is 0cm-3cm, and the first lifting plate 6c and the second lifting plate 6d drive the baffle 1b to lift, so that the baffle 1b is lifted.

As shown in fig. 14, the connecting piece 2 is provided with a first hole 2A and a second hole 2B, the connecting end of the table leg 3 is provided with a fastener 4 corresponding to the connecting piece, and the table leg 3 is connected with the first hole 2A and the second hole 2B on the connecting piece 2 through the fastener 4, and the two holes are matched to form a folding table leg to support the table.

The working principle of the utility model is as follows:

as shown in fig. 10 (a), when the desk is at rest, the legs 3 are all folded; the baffle plate 1b and the table plate 1 are positioned on the same plane to form a flat table top, so that the table top is convenient to store;

as shown in fig. 10 (b), when the desk is used normally, the first leg 3a is opened from the second leg placement groove 1f and the third leg placement groove 1g through the fastening piece 4 between the first connecting piece 2a and the second connecting piece 2b, and the opening angle is 5 ° -115 °; the length of the first table leg 3a is 26.5cm; the first table leg 3a is slightly inclined to the right for supporting; the second table leg 3b and the third table leg 3c are respectively opened through the fastening pieces 4 between the third connecting piece 2c and the fourth connecting piece 2d, and the opening angles are 0-115 degrees; the length of the second table leg 3b and the third table leg 3c is 25cm; the second table leg 3b and the third table leg 3c are slightly inclined to the left for supporting;

secondly, when the first table leg 3a is opened, the lifting device 6 is linked, the gear rod 5 rotates anticlockwise along with the opening of the first table leg 3a by 0-115 degrees, the rotation angle is 0-115 degrees, the first rack 6a and the second rack 6b drive the first lifting plate 6c and the second lifting plate 6d to lift by 0cm-3cm, the first lifting plate 6c and the second lifting plate 6d drive the baffle plate 1b to move, the lifting of the baffle plate 1b is further realized, the lifting amplitude of the baffle plate 1b is 0cm-3cm, and the first chute component 1b-1, the second chute component 1b-2 and the third chute component 1b-3 are arranged in the first chute groove 1j, the second chute groove 1k and the third chute groove 1l at the rear side and the left side and the right side of the table plate 1, so that the baffle plate 1b is connected with the table plate 1.

As shown in fig. 10 (c), when a person is about to get up, the desk is moved to the ready state 1, and the fourth leg 3d is opened from the first leg receiving groove 1e through the fastening member 4 between the fifth and sixth connecting members 2e, 2f, with the opening angle being 5 ° to 115 °, the fourth leg 3d being supported with a slight left tilt, and the fourth leg 3d being 26.5cm in length, while maintaining the normal use state of the desk.

As shown in fig. 10 (d), after the desk movement preparation form 1 is completed, the desk movement preparation form 2 is performed, and the second leg 3b and the third leg 3c are folded by the fastener 4 between the second connector 2c and the fourth connector 2d, the folding angle is 0 ° to 115 °, until the second leg 3b and the third leg 3c are closely attached to the bottom surface of the table 1.

Next, a desk moving action is performed, at this time, the desk bearing leg is the first leg 3a and the fourth leg 3d, the fourth leg 3d forms a movable leg through the movable fifth connecting piece 2e and the sixth connecting piece 2f which are arranged in the first sliding rail 1c and the second sliding rail 1d, the structure of the first sliding rail 1c and the second sliding rail 1d and the fifth connecting piece 2e and the sixth connecting piece 2f is shown in fig. 4, at this time, the desk board 1 is pushed to the right by taking the fourth leg 3d as a supporting point, the fourth leg 3d slides from the right side of the first sliding rail 1c and the second sliding rail 1d to the left side of the first sliding rail 1c and the second sliding rail 1d, the whole desk is moved to the right side relative to the original position, the whole desk is changed into a form as shown in fig. 10 (e), the whole moving of the desk is realized, in addition, the baffle 1b can prevent the desk body from falling down, and after people return, the desk can be operated in a reverse order.

Claims (8)

1. The utility model provides a portable bed table, includes table (1), its characterized in that: the novel table is characterized in that a baffle plate (1 b) is arranged on the periphery of the table plate (1), a first sliding rail (1 c) and a second sliding rail (1 d) are respectively arranged on two sides of the bottom surface of the table plate (1), fourth table legs (3 d) used for supporting are arranged on the first sliding rail (1 c) and the second sliding rail (1 d) in a sliding mode, a first table leg (3 a), a second table leg (3 b) and a third table leg (3 c) used for supporting are respectively arranged on the bottom surface of the table plate (1), and the baffle plate (1 b) drives the upper portion and the lower portion to stretch through a lifting device (6) arranged inside the table plate (1).

2. A portable bed table as claimed in claim 1, wherein: the novel desk is characterized in that the first desk leg (3 a), the second desk leg (3 b) and the third desk leg (3 c) are connected with the bottom surface of the desk plate (1) through connecting pieces (2), the fourth desk leg (3 d) is connected with the first sliding rail (1 c) and the second sliding rail (1 d) through the connecting pieces (2), and fasteners (4) are respectively configured between the first desk leg (3 a), the second desk leg (3 b), the third desk leg (3 c) and the fourth desk leg (3 d) and the connecting pieces (2).

3. A portable bed desk as claimed in claim 2, wherein: the connecting pieces (2) comprise first connecting pieces (2 a), second connecting pieces (2 b), third connecting pieces (2 c) and fourth connecting pieces (2 d) which are arranged at four corners of the bottom surface of the table plate (1), and fifth connecting pieces (2 e) and sixth connecting pieces (2 f) which are respectively arranged at the bottom surface of the table plate (1) and positioned at two side ends of the first sliding rail (1 c) and the second sliding rail (1 d);

the first table leg (3 a) is of a u-shaped structure, and two vertexes of the top of the u-shaped structure are connected with the table plate (1) through a first connecting piece (2 a) and a second connecting piece (2 b) respectively;

the second table leg (3 b) and the third table leg (3 c) are of a supporting rod structure, the second table leg (3 b) is connected with the table board (1) through a third connecting piece (2 c), and the third table leg (3 c) is connected with the table board (1) through a fourth connecting piece (2 d); the fourth table leg (3 d) is of a u-shaped structure, two vertexes at the top of the u-shaped structure are connected with the first sliding rail (1 c) and the second sliding rail (1 d) through a fifth connecting piece (2 e) and a sixth connecting piece (2 f) respectively, and the fourth table leg (3 d) slides along the first sliding rail (1 c) and the second sliding rail (1 d).

4. A portable bed table according to claim 3, wherein: the first sliding rail (1 c) and the second sliding rail (1 d) are respectively connected with the fourth table leg (3 d) and the table board (1) through a fifth connecting piece (2 e) and a sixth connecting piece (2 f), and the fifth connecting piece (2 e) and the sixth connecting piece (2 f) are connected with the fourth table leg (3 d) through a fastening piece (4).

5. A portable bed table as claimed in claim 1, wherein: the baffle (1 b) is movably connected with the table plate (1) through a first sliding rail component (1 b-1) arranged at the rear side of the table plate (1) and positioned on the baffle (1 b), and a second sliding rail component (1 b-2) and a third sliding rail component (1 b-3) which are respectively arranged at two sides of the table plate (1) and positioned on the baffle (1 b).

6. A portable bed table as claimed in claim 5, wherein: the novel desk is characterized in that slide rail grooves matched with a first slide rail component (1 b-1), a second slide rail component (1 b-2) and a third slide rail component (1 b-3) are respectively arranged in the desk plate (1), the first slide rail component (1 b-1) is matched with a first slide rail groove (1 j) arranged in the rear side of the desk plate (1), the second slide rail component (1 b-2) is matched with a second slide rail groove (1 k) arranged in one side of the desk plate (1), the third slide rail component (1 b-3) is matched with a third slide rail groove (1 l) arranged in the other side of the desk plate (1), and then a baffle plate (1 b) is connected with the desk plate (1) and can realize sliding action.

7. A portable bed desk according to claim 1 or 3, characterized in that: the table (1) is internally provided with a first lifting groove (1 m) and a second lifting groove (1 n) for placing a lifting device (6), the lifting device (6) comprises a gear rod (5) arranged between a first connecting piece (2 a) and a second connecting piece (2 b), two ends of the gear rod (5) are respectively connected with two sides of a baffle plate (1 b) through a fastening piece (4) at the inner side of the first connecting piece (2 a) and the second connecting piece (2 b) into an integrated structure, a first rack (6 a) and a second rack (6 b) are respectively arranged at the gear of the gear rod (5), a first lifting plate (6 c) perpendicular to the first rack (6 a) is arranged at the upper end of the first rack (6 a), a second lifting plate (6 d) perpendicular to the second rack (6 b) is arranged at the upper end of the second rack (6 b), two ends of the first lifting plate (6 c) and the second lifting plate (6 d) are respectively connected with two sides of the baffle plate (1 b), the gear of the gear rod (5) is meshed with the first rack (6 a) and the second rack (6 b) and the first lifting plate (6 c) are meshed with the first rack (6 a) and the first lifting plate (6 c) are arranged at the first lifting plate and the first lifting plate (6 c), the second rack (6 b) and the second lifting plate (6 d) are arranged inside the second lifting groove (1 n), and a gear rod (5) of the lifting device (6) is connected with a fastening piece (4) on the first table leg (3 a) so that the lifting device (6) is linked in the opening process of the first table leg (3 a).

8. A portable bed table as claimed in claim 1, wherein: the bottom surface of the table plate (1) is provided with a first table leg placing groove (1 e) matched with the fourth table leg (3 d); the two sides of the first table leg placing groove (1 e) are respectively provided with a second table leg placing groove (1 f) and a third table leg placing groove (1 g) which are matched with the first table leg (3 a), the first table leg placing groove (1 e) is used for placing a fourth table leg (3 d) after recovery, and the second table leg placing groove (1 f) and the third table leg placing groove (1 g) are used for placing the first table leg (3 a) after recovery.