CN112401554A

CN112401554A - Table board

Info

Publication number: CN112401554A
Application number: CN201910775603.1A
Authority: CN
Inventors: 陈得峻
Original assignee: Atec International Team Co Ltd
Current assignee: Atec International Team Co Ltd
Priority date: 2019-08-21
Filing date: 2019-08-21
Publication date: 2021-02-26
Anticipated expiration: 2039-08-21
Also published as: CN112401554B

Abstract

The invention provides a table plate, which comprises a table plate part, a supporting rod and a positioning device; the supporting rod is provided with an upper end for supporting the table plate part upwards and a lower end; the table plate piece comprises an upper cover plate, a bottom cover plate and a first sliding piece, wherein the upper cover plate and the bottom cover plate are combined into a structural body and slide back and forth relative to the first sliding piece by virtue of the corresponding sliding relation between the damping piece and the tooth rows; the upper end of the supporting rod forms a rotating shaft and penetrates through a through hole in the bottom cover plate from bottom to top to be combined and fixed with the first sliding piece; the two shading plate groups contained in the table plate part can respectively extend and slide back and forth so as to downwards and movably shade the through hole on the bottom cover plate; the positioning device comprises a movable telescopic bayonet pin piece, and when the bayonet pin piece retracts to be separated or then extends to be clamped into a positioning hole arranged on a rotating shaft at the upper end of the supporting rod, the table plate piece can be operated to horizontally rotate to adjust the angle relative to the upper end of the supporting rod or then be positioned at the angle.

Description

Table board

Technical Field

The present invention relates to a desk, and more particularly, to a desk which can be installed on a side of a chair, a bed, a sofa, a table, a pulley chassis, or a conjoined chair, and can be easily adjusted in angle or position for a user to conveniently use.

Background

In general, chairs, especially chairs for students in classrooms, including beds and sofas, etc., are inconvenient because they do not have a desk plate (writing tablet) attached thereto when a user sits and wants to write, operate an electronic device, or even place an object such as a beverage cup. Although the structure of the desk board has been designed as in US9,044,099 "CHAIR WITH adjust table", the writing desk board disclosed therein has the following disadvantages:

(1) the writing tablet is designed to be installed on a specific chair, which relatively limits the application range of the writing tablet and is not suitable for the manufacturing end and the consuming end.

(2) The writing desk plate utilizes a sliding part to slide in a sliding groove in the desk plate to adjust the horizontal position of the desk plate in the left-right direction, so that the sliding friction force is relatively increased, the operation convenience of a consuming end or a using end is not facilitated, and all components are easy to damage due to large friction.

(3) The writing desk plate is supported at the upper end of a supporting rod to horizontally rotate, however, no positioning device is arranged between the desk plate and the upper end of the supporting rod, so that the desk plate cannot form a positioning state relative to the upper end of the supporting rod after operation and adjustment, namely, the using end cannot position the writing desk plate at a desired application angle or position after adjustment, and inconvenience is caused to the using end relatively.

(4) The writing tablet (writing tablet) is rotated by two sets of bearings (upper bearing 66 and lower bearing 68 shown in fig. 3), which are relatively complicated and easily damaged, and are not conducive to assembly work of the manufacturing end or the consuming end or reduce manufacturing cost.

From the above, there is still room for improvement in the conventional writing desk technology (such as US9,044,099), and besides the application in the field of chairs, the solution of the present invention can be extended to the fields of beds, sofas, tables, pulley chassis, conjoined chairs, etc., to further increase the application range of the present invention.

Disclosure of Invention

The main objective of the present invention is to provide a table board, which comprises a table board member, a supporting rod and a positioning device; wherein the supporting rod is provided with an upper end for supporting the desk plate part upwards and a lower end for being matched and arranged on the side edge of the chair, the bed, the sofa, the desk, the pulley chassis or the conjoined chair for use; the table plate piece comprises an upper cover plate, a bottom cover plate and a first sliding piece which is clamped between the upper cover plate and the bottom cover plate, wherein the upper cover plate and the bottom cover plate are combined into a structural body and further slide smoothly in the front-back direction relative to the first sliding piece by virtue of the corresponding sliding relation between at least one damping piece and one tooth row; the upper end of the supporting rod forms a rotating shaft and penetrates through a through hole in the bottom cover plate from bottom to top to be combined and fixed with the first sliding piece; the table plate piece comprises two shutter groups, and each shutter group can respectively stretch and slide back and forth to shield the through hole on the bottom cover plate in a downward movable manner; when the clamping pin piece is operated to retract to be separated or then extends to be clamped into a positioning hole arranged on a rotating shaft at the upper end of the supporting rod, the table plate piece can be operated to horizontally rotate to adjust the angle relative to the upper end of the supporting rod or then be positioned at the angle, so that the table plate piece can be easily adjusted in angle or position for a user to use conveniently.

To achieve the above object, the present invention provides a desk plate, comprising a desk plate, a supporting rod and a positioning device, wherein the supporting rod has an upper end and a lower end extending downward from the upper end by a length, the upper end supports the desk plate upward and forms a rotating shaft, and the rotating shaft is provided with at least one positioning hole; wherein the table member comprises an upper cover plate, a first sliding member and a bottom cover plate, wherein the bottom cover plate and the upper cover plate are vertically combined into a structure body correspondingly to move forward and backward relative to the first sliding member, the upper cover plate is provided with a first accommodating space for accommodating the first sliding member and the bottom cover plate, the first sliding member is provided with a second accommodating space, the bottom cover plate is provided with a forward and backward first chute for the first sliding member to slide forward and backward in the first chute, the bottom of the first chute is provided with a forward and backward strip-shaped through hole, a rotating shaft formed at the upper end of the supporting rod penetrates through the through hole of the bottom cover plate from bottom to top to be combined and fixed with the first sliding member, the table member further comprises at least one damping member which is respectively embedded into an embedding groove arranged on the first sliding member, and each damping member is movably engaged with a forward and backward first tooth row arranged in the first chute of the bottom cover plate, so that the upper cover plate and the bottom cover plate of the desk plate can slide back and forth relative to the first sliding member of the desk plate with damping effect by virtue of the movable meshing relationship between the first tooth row and each damping member, wherein the desk plate further comprises two shielding plate groups, the two shielding plate groups are positioned between the first sliding member and the first sliding slot of the bottom cover plate and are respectively and symmetrically arranged at the front and back ends of the first sliding slot, so that each shielding plate group can respectively move back and forth to shield the through hole of the bottom cover plate movably downwards, wherein each shielding plate group is respectively provided with a first shielding plate and a second shielding plate, each first shielding plate is provided with a first sliding slot part and a first sliding rail part, each second shielding plate is provided with a second sliding slot part and a second sliding rail part, wherein the first shielding plate of each shielding plate group is movably connected with the second sliding rail part of the second shielding plate group by virtue of the first sliding rail part thereof so as to enable the second shielding plate of each shielding plate group to slide back and forth relative to the first shielding plate or unfold, wherein the bottom surfaces of the front and rear ends of the first sliding member are respectively provided with two sliding blocks for being movably inserted into the first sliding groove parts of the corresponding first shielding plates from top to bottom, wherein the inner surfaces of the front and rear ends of the first chute of the bottom cover plate are respectively provided with two sliding blocks for respectively penetrating into the second chute parts of the corresponding second shielding plates from bottom to top, wherein when the first shutter and the second shutter of one of the two shutter sets are driven to expand in a sliding manner, the first shield plate and the second shield plate of the other one of the two shield plate groups are driven to overlap in a sliding manner, therefore, when the upper cover plate and the bottom cover plate of the desk plate part slide relative to the first sliding part of the desk plate part in the front-back direction, the first shutter and the second shutter of each shutter group can synchronously slide back and forth and are relatively unfolded or folded so as to respectively and movably shield the through hole of the bottom cover plate downwards; the positioning device is arranged in the second accommodating space of the first sliding part and comprises a movable clamping pin piece, the movable clamping pin piece can be operated to extend out to be clamped in or retract to be separated from at least one positioning hole formed in a rotating shaft formed at the upper end of the supporting rod, when the movable clamping pin piece is operated to retract to be separated from the positioning hole formed in the rotating shaft formed at the upper end of the supporting rod, the table piece can be operated to horizontally rotate so as to adjust or select the angle of the table piece relative to the upper end of the supporting rod, and when the movable clamping pin piece is operated to extend out to be clamped in the positioning hole formed in the rotating shaft formed at the upper end of the supporting rod, the table piece is positioned at an angle relative to the upper end of the supporting rod.

In a preferred embodiment of the present invention, the bottom cover plate of the table member further has a front-to-back second sliding slot parallel to the first sliding slot; wherein the table member further comprises a second sliding member slidably disposed in the second sliding groove; the table member further comprises a connecting member having two connecting ends and respectively connected to the first sliding member and the second sliding member so that the first sliding member and the second sliding member can slide synchronously by the connecting member.

In a preferred embodiment of the present invention, the table further comprises an inner cover plate, the inner cover plate is disposed on the second sliding slot, so that the second sliding member can be limited between the inner cover plate and the second sliding slot for sliding.

In a preferred embodiment of the present invention, the desk member further comprises two damping members, the two damping members are respectively embedded in two embedding slots symmetrically formed on the second sliding member, and the two damping members are movably engaged with a second front-rear tooth row arranged in a second sliding slot of the bottom cover plate, so that the second sliding member can perform a relative front-rear sliding motion with damping effect with respect to the bottom cover plate of the desk member by virtue of the movable engagement relationship between the second tooth row and each damping member.

In a preferred embodiment of the present invention, the positioning device forms a pull-ring type fastener, and the pull-ring type fastener includes a pull-ring portion; wherein the bayonet lock piece further comprises a spring part, an installation part and a bayonet lock; the pull ring part is provided with a third accommodating space and a bayonet lock fixing part, the third accommodating space is internally provided with a through hole and a first clamping point for fixing the spring part, and the bayonet lock fixing part is used for fixing the bayonet lock; the mounting part is provided with a fourth accommodating space, and a second clamping point and a clamping pin limiting hole are arranged in the fourth accommodating space; the pull ring part is arranged on the fourth accommodating space of the mounting part; wherein the bayonet lock can be selectively clamped into at least one positioning hole arranged on the rotating shaft; when the pull ring part is installed on the installation part, the pull ring part can be pulled to enable the bayonet lock to be compressed towards the second clamping point by virtue of the elastic force of the spring part and to be away from the at least one positioning hole of the rotating shaft, or the pull ring part is released to enable the bayonet lock to be elastically extended from the second clamping point by virtue of the elastic force of the spring part and to be clamped into the at least one positioning hole of the rotating shaft.

In a preferred embodiment of the present invention, the positioning device forms an automatic locking member, and the automatic locking member further comprises an installation part; wherein the clamping pin piece further comprises a spring and a clamping ball; wherein the mounting portion has a bayonet member mounting portion into which the bayonet member is mounted; wherein the locking ball is pressed into the inside of the locking pin member or extends out of the locking pin member by the elastic force of the spring; wherein the locking ball can be selectively locked in at least one positioning hole of the rotating shaft; when the clamping pin piece is arranged on the installation part, the clamping pin piece can be rotated by rotating the first element to enable the clamping ball to be pressed into the clamping pin piece by the elastic expansion force of the spring of the clamping pin piece so as to enable the clamping ball to be far away from at least one positioning hole of the rotating shaft, or the table plate piece is rotated to enable the clamping ball to be stretched out from the inside of the clamping pin piece by the elastic force of the spring of the clamping pin piece so as to be clamped into at least one positioning hole of the rotating shaft.

In a preferred embodiment of the present invention, a sleeve is formed at the lower end of the supporting rod, and a rod member is disposed between the sleeve and the rotating shaft; wherein the sleeve can be pivotally sleeved on the bottom of a chair; wherein the desk plate piece can perform horizontal rotary displacement of any angle around the chair by virtue of the sleeve of the supporting rod; when the desk plate piece horizontally rotates to be close to the chair through the sleeve, the desk plate piece can slide through the first sliding piece to adjust the distance between the desk plate piece and the chair.

In a preferred embodiment of the present invention, the bottom of the chair further comprises a seat and a foot; wherein the seat part is supported on the foot seat; wherein the supporting rod is rotatably arranged between the seat piece and the foot seat for a user to write left or right; the sleeve is pivotally sleeved on the foot seat of the chair so that the supporting rod can pivotally move relative to the foot seat; wherein the foot seat is arranged at the bottom of the chair to support the table board and the chair.

In a preferred embodiment of the present invention, a seat fixing member is further disposed below the seat, and a limiting rotation groove for limiting the rotation of 180 ° horizontally and a trepan are disposed at the bottom of the seat fixing member.

In a preferred embodiment of the present invention, the foot base comprises a plurality of pulley blocks, a ring frame-shaped bottom, a bracket, an elastic member, an inner bearing, a limiting column, an outer shaft sleeve and a steam rod from bottom to top; wherein the bracket is provided with a fifth accommodating space, the fifth accommodating space is internally provided with a steam rod slotted hole, a bearing slotted hole and an elastic element slotted hole, and the steam rod slotted hole is used for the steam rod to be arranged therein; wherein the elastic piece is arranged in the elastic piece slot of the bracket; the inner bearing is arranged in a bearing slot of the bracket and is wrapped on the periphery of the steam rod, the bottom surface of the inner bearing is provided with at least one fixing part for fixing the elastic piece at an angle, the surface of the inner bearing is provided with a limiting fixing part, and one side of the inner bearing is provided with a clamping part for clamping the inner bearing with a clamped part further arranged on the sleeve by virtue of the clamping part so as to combine the inner bearing and the sleeve together; wherein the lower part of the limiting column is arranged in the limiting fixing part of the inner bearing, and the upper part of the limiting column penetrates through the sleeve and the outer shaft sleeve and abuts against the limiting rotary groove of the seat fixing part; the outer shaft sleeve is arranged between the bearing slotted hole and the limiting rotary groove of the seat part fixing part and covers the sleeve, the inner bearing and the steam rod, and the outer shaft sleeve is provided with a clamping groove with a downward opening for clamping the outer shaft sleeve at the connecting part of the sleeve and the rod piece.

In a preferred embodiment of the present invention, when the steam rod is stationary, the seat fixing member can perform a rotation restriction of 180 ° horizontally on the steam rod by virtue of the limit relationship between the limit rotary groove and the limit post.

In a preferred embodiment of the present invention, the bearing positioning device enables the inner bearing, the sleeve and the outer sleeve to form a locked state in which the sleeve cannot rotate or a movable state in which the sleeve can rotate.

In a preferred embodiment of the present invention, when the steam rod is stationary and the sleeve is movable, the inner bearing, the sleeve and the outer sleeve can perform an angular horizontal rotational displacement with respect to the steam rod.

In a preferred embodiment of the present invention, the second sliding slot of the desk board further has a sliding rail rod; the rod of the slide rail rod is inserted into a track part further arranged on the second sliding part, so that the slide rail rod can enable the second sliding part to slide along the rod of the slide rail rod along a certain track.

In a preferred embodiment of the present invention, the lower end of the supporting rod is further connected to a connecting portion; wherein the desk plate piece can be combined with a base on the support legs of a bed, a sofa, a desk, a pulley chassis or a conjoined chair by virtue of the connecting part of the support rod; wherein the desk plate part can slide by virtue of the first sliding part so as to adjust the distance between the desk plate part and a bed, a sofa, a desk, a pulley chassis or a conjoined chair.

Compared with the prior art, the invention has the beneficial effects that: can be easily adjusted in angle or position for convenient use by a user.

Drawings

Fig. 1 is a perspective assembly view of an embodiment of the present invention (the desk member is mounted on a chair for a right-handed user).

Fig. 2 is a schematic view of the table member of fig. 1 formed in a chair for use by a left-handed user.

Fig. 3 is an exploded schematic view of fig. 2.

Fig. 4 is a partially enlarged exploded (with the upper cover removed) schematic view of the table member of fig. 3.

Fig. 5 is an enlarged, partially exploded view of the table member of fig. 4.

Fig. 6 is a partially enlarged schematic view of the first slider and the damping member of fig. 5.

Fig. 7 is a partially enlarged schematic view of the second slider and the damping member of fig. 5.

Fig. 8 is a partially enlarged exploded perspective view of the first sliding member, the bottom cover plate, the rotating shaft and the rod member of the present invention.

Fig. 9 is a partially enlarged exploded perspective view of the first slider, the shutter set and the bottom cover plate according to the present invention.

Fig. 10 is a partially enlarged exploded perspective view of the positioning device of the desk board member of the present invention as a pull-ring type fastener.

Fig. 11 is a partially enlarged side sectional view of the positioning device of the desk plate member of the present invention as a pull-ring type fastener.

FIG. 12 is a top plan view of the table plate member of the present invention (with the upper cover plate and the connecting member removed).

Figure 13 is a top plan view of the table piece of the present invention.

Fig. 14 is a top plan view of the table member of fig. 13 producing a back-and-forth movement.

Fig. 15 is an enlarged side view of the positioning device of the desk plate member of the present invention in the form of a pull-ring type fastener.

Fig. 16 is a side view of a detent member of the positioning device of fig. 15.

Fig. 17 is an enlarged, side, partially cross-sectional view of the positioning device of the desktop member of the present invention as an automatic locking member.

Fig. 18 is an exploded perspective view of the chair of fig. 2 removed.

Fig. 19 is an exploded perspective view of the seat mount of fig. 18 removed from the steam pole.

Fig. 20 is a partially enlarged exploded perspective view of the seat holder, outer sleeve, support rod, retaining post, inner bearing, elastic member, steam rod, and bracket of fig. 19.

Fig. 21 is a schematic view of another angle of fig. 20.

Fig. 22 is an enlarged, side elevational, cross-sectional view of a portion of fig. 18 (without the chair).

Figure 23 is a bottom plan view of the inner bearing (including the resilient member) of the present invention.

Fig. 24 is a schematic view of fig. 23 rotated by an angle.

Fig. 25 is a bottom plan view of the seat mount of the present invention including the spacing post.

Fig. 26 is a schematic view of fig. 25 rotated by an angle.

Fig. 27 is a side elevation, partially enlarged, cross-sectional view of fig. 18 (without the chair) at another angle.

Fig. 28 is a perspective assembly view of another embodiment of the present invention (the chair is different from the chair in fig. 1, and the table member further comprises a beverage placing member and an object holding member).

FIG. 29 is an exploded perspective view of another embodiment of the desktop member (having a slide rail and a carrier plate) of the present invention.

Fig. 30 is a schematic view of another embodiment of the invention (applied to a bed).

Fig. 31 is a schematic view of another embodiment of the present invention (applied to a sofa).

Fig. 32 is a schematic view of another embodiment of the present invention (applied to a table).

Figure 33 is a schematic view of another embodiment of the invention (applied to a pulley chassis).

Figure 34 is a schematic view of another embodiment of the present invention applied to a conjoined chair.

Description of reference numerals: 1-a table board; 10-a desk board member; 11-an upper cover plate; 111-a first accommodating space; 112 carrying plate; 12-a first slide; 121-a second accommodating space; 122-caulking groove; 123-a slide block; 13-a bottom cover plate; 131-a first runner; 1311-a slider; 132 perforating; 133-a second runner; 134-first row of teeth; 135-second row of teeth; 14-a second slide; 141-caulking groove; 142-a track portion; 15-a link; 151-link end; 16-a damping member; 17-a shutter group; 171-a first shutter; 1711-a first slide groove portion; 1712-a first slide track portion; 172-a second shutter; 1721-a second slide groove portion; 1722-a second slide track portion; 18-inner cover plate; 19-a slide rail rod; 191 a rod part; 20-a strut; 21-a sleeve; 211-engaged portion; 22-a rod member; 23-a rotating shaft; 231-positioning holes; 24-a base; 25 a connecting part; 30-a positioning device; 31-pull ring type fastener; 311-a pull ring part; 3111-a third accommodating space; 3112-a bayonet mount; 3113-perforating; 3114-first card stop; 32-automatic locking member; 321-a mounting portion; 3211-a bayonet fitting mount; 33-a detent member; 331-a spring portion; 332-a mounting portion; 333-bayonet lock; 3321-fourth accommodating space; 3322-second card stop; 3323-bayonet lock retaining hole; 333-bayonet lock; 334-a spring; 335-a stop ball; 40-seat member fixing member; 41-limiting rotary groove; 42-trepanning; 50-a foot seat; 51-a pulley block; 52-ring frame bottom; 53-a scaffold; 531-fifth accommodating space; 5311-steam bar slot; 5312-bearing slot holes; 5313-spring slot; 54-an elastic member; 55-an inner bearing; 551-a fixed part; 552-limit fixing part; 553-an engaging portion; 56-a limit column; 57-outer sleeve; 571-a card slot; 58-steam pole; 60-a seat member; 70-a beverage placement member; 80-an article holder; 2, a chair; 3, a bed; 4, a sofa; 5, a table; 6, a pulley chassis; 7 connected chair.

Detailed Description

The present invention is described in detail with reference to the drawings, wherein the drawings are only for illustrating the structural relationship and the related functions of the present invention, and the sizes of the elements in the drawings are not to be drawn to scale and are not to be construed as limiting the present invention.

Referring to fig. 1 to 34, the present invention provides a table board 1, wherein the table board 1 can be installed on the side of a chair 2, a bed 3 (as shown in fig. 30), a sofa 4 (as shown in fig. 31), a table 5 (as shown in fig. 32), a pulley chassis 6 (as shown in fig. 33) or a conjoined chair 7 (as shown in fig. 34) for a user to use; when the table board 1 is installed on the bed 3, the sofa 4, the table 5, the pulley chassis 6 or the conjoined chair 7, the table board 1 further includes a base 24 disposed on the legs of the bed 3, the sofa 4, the table 5, the pulley chassis 6 or the conjoined chair 7, but not limited thereto, so that the table board 1 can be rotated to the use position on the bed 3, the sofa 4, the table 5, the pulley chassis 6 or the conjoined chair 7 by using the base 24 as the axis according to the user's requirement, as shown in fig. 30 to 34.

For the purpose of describing and discussing the present invention, the following description will be made by way of example and not limitation, with the present invention applied to a chair 2, and the present invention can be applied to other fields than the chair 2, such as a bed 3, a sofa 4, a table 5, a pulley chassis 6 or a conjoined chair 7; in the embodiment shown in fig. 1 to 29, the table board 1 comprises a table board member 10, a supporting rod 20 and a positioning device 30; wherein a sleeve 21 is formed at the lower end of the supporting rod 20, a rod 22 is disposed between the sleeve 21 and the rotating shaft 23, wherein the sleeve 21 is pivotally sleeved on the bottom of a chair 2, wherein the table member 10 can perform a horizontal rotation displacement of any angle around the chair 2 by virtue of the sleeve 21 of the supporting rod 20, and when the table member 10 horizontally rotates to approach the chair 2 by virtue of the sleeve 21, the table member 10 can slide by virtue of the first sliding member 12 to adjust the distance between the table member 10 and the chair 2; wherein the bottom of the chair 2 further comprises a seat 60 and a foot 50, but not limited thereto.

The seat member 60 is supported on the foot seat 50 to obtain a stable supporting force by the foot seat 50, wherein the supporting rod 20 is rotatably disposed between the seat member 60 and the foot seat 50 for a user to write left or right, and extends obliquely upward to support the table member 10 as shown in fig. 3, wherein the sleeve 21 is pivotally sleeved on the foot seat 50 of the chair 2 to allow the supporting rod 20 to pivot relative to the foot seat 50 as shown by an arrow B in fig. 2, and wherein the foot seat 50 is disposed at the bottom of the chair 2 to support the table 1 and the chair 2.

Referring to fig. 4 and 5, the desk plate 10 includes an upper cover plate 11, a first sliding member 12 and a bottom cover plate 13, wherein the bottom cover plate 13 and the upper cover plate 11 are combined into a structural body up and down correspondingly so as to move forward and backward relative to the first sliding member 12; the upper cover plate 11 has a first accommodating space 111 for accommodating the first sliding member 12 and the bottom cover plate 13; the first sliding member 12 has a second accommodating space 121 as shown in fig. 6; the bottom cover 13 has a front-rear first sliding slot 131 for the first sliding member 12 to slide in the first sliding slot 131, and the bottom of the first sliding slot 131 is provided with a front-rear elongated through hole 132; wherein the rotating shaft 23 formed at the upper end of the supporting rod 20 passes through the through hole 132 of the bottom cover plate 13 from bottom to top to be combined and fixed with the first sliding member 12 as shown in fig. 5 and 9; wherein the table component 10 further comprises at least one damping component 16 for being respectively embedded into the embedding slot 122 disposed on the first sliding component 12 as shown in fig. 6, and each damping component 16 is movably engaged with a first front-rear tooth row 134 disposed in the first sliding slot 131 of the bottom cover plate 13, so that the top cover plate 11 and the bottom cover plate 13 of the table component 10 can perform a forward-rear sliding with damping effect with respect to the first sliding component 12 of the table component 10 by virtue of the movable engagement relationship between the first tooth row 134 and each damping component 16 as shown in the direction of arrow D in fig. 14; as shown in fig. 9, the table member 10 further includes two shutter sets 17, the two shutter sets 17 are located between the first sliding member 12 and the first sliding slot 131 of the bottom cover 13 and are respectively and symmetrically disposed at the front and rear ends of the first sliding slot 131, so that each shutter set 17 can respectively move forward and backward to shield the through hole 132 of the bottom cover 13; each shutter group 17 has a first shutter 171 and a second shutter 172, each first shutter 171 has a first sliding slot 1711 and a first sliding rail 1712, each second shutter 172 has a second sliding slot 1721 and a second sliding rail 1722, wherein the first shutter 171 of each shutter group 17 is movably connected with the second sliding rail 1722 of the second shutter 172 by the first sliding rail 1712, so that the second shutter 172 of each shutter group 17 can be unfolded or folded with respect to the first shutter 171; wherein the bottom surfaces of the front and rear ends of the first sliding member 12 are respectively provided with two sliding blocks 123 for being respectively movably inserted into the first sliding slot 1711 of each corresponding first shielding plate 171 from top to bottom as shown in fig. 9; wherein, two sliding blocks 1311 are respectively disposed on the inner surfaces of the front and rear ends of the first sliding slot 131 of the bottom cover plate 13 for being respectively movably inserted into the second sliding slot 1721 of each corresponding second shielding plate 172 from bottom to top as shown in fig. 9; wherein when the first shield 171 and the second shield 172 of one shield 17 of the two shield 17 are driven to slide and unfold relatively, the first shield 171 and the second shield 172 of the other shield 17 of the two shield 17 are driven to slide and fold relatively, so that when the upper cover 11 and the bottom cover 13 of the table 10 slide back and forth relatively with respect to the first sliding member 12 of the table 10, the first shield 171 and the second shield 172 of each shield 17 can slide back and forth relatively and unfold or fold relatively synchronously to respectively and downwardly movably shield the through hole 132 of the bottom cover 13 as shown in fig. 12 to 14, so as to prevent the user from carelessly inserting fingers into the through hole 132 to cause finger pinching during operation, and prevent foreign contaminants from entering the table 10.

Referring to fig. 5 and 12, the bottom cover 13 of the table member 10 is further provided with a front and rear second sliding slot 133 parallel to the first sliding slot 131 as shown in fig. 5 but not limited thereto.

Referring to fig. 5 and 7, the table plate 10 further includes a second sliding member 14 slidably disposed in the second sliding groove 133, but not limited thereto, wherein the table plate 10 further includes a connecting member 15 as shown in fig. 5, but not limited thereto, the connecting member 15 has two connecting ends 151 and is respectively connected to the first sliding member 12 and the second sliding member 14, so that the first sliding member 12 and the second sliding member 14 can slide synchronously via the connecting member 15.

Referring to fig. 5 and 14, the tablet element 10 further includes an inner cover 18 as shown in fig. 5 but not limited thereto, the inner cover 18 is mounted on the second sliding slot 133 so that the second sliding element 14 can be limited to slide between the inner cover 18 and the second sliding slot 133.

Referring to fig. 5 and 14, the table member 10 further includes two damping members 16 as shown in fig. 5 but not limited thereto, the two damping members 16 are respectively embedded in two embedding slots 141 symmetrically formed on the second sliding member 14, and the two damping members 16 can be movably engaged with a second front-rear rack 135 disposed in the second sliding slot 133 of the bottom cover 13, so that the second sliding member 14 can perform a damped front-rear relative sliding movement with respect to the bottom cover 13 of the table member 10 by virtue of the movable engagement relationship between the second rack 135 and each damping member 16 as shown by an arrow D direction in fig. 14.

The supporting rod 20 has an upper end and a lower end extending downward from the upper end, the upper end supports the table component 10 upward and forms a rotating shaft 23, wherein the rotating shaft 23 is provided with at least one positioning hole 231.

The positioning device 30 is disposed in the second accommodating space 121 of the first sliding member 12 as shown in fig. 10 and 15, and includes a movable latch member 33, wherein the movable latch member 33 can be operated to extend out to be latched into or retracted out of at least one positioning hole 231 formed in the rotating shaft 23 at the upper end of the supporting rod 20; wherein when the movable latch member 33 is retracted to disengage from a positioning hole 231 of the shaft 23 formed at the upper end of the supporting rod 20, the table member 10 can be operated to rotate horizontally to adjust or select the angle of the table member 10 relative to the upper end of the supporting rod 20 as shown by the arrow a in fig. 1; wherein when the movable latch member 33 is operated to be extended and latched into a positioning hole 231 formed in the rotating shaft 23 formed at the upper end of the supporting rod 20, the table member 10 is positioned at an angle with respect to the upper end of the supporting rod 20.

Referring to fig. 1, when the table 10 is horizontally rotated to the right of the table 1 by the sleeve 21, the table 10 can slide (in the direction of arrow D in fig. 1) by the first sliding member 12 to approach the table 1, and the table 10 is parallel to the table 1 to form a right writing state as shown in fig. 1.

Referring to fig. 2, when the table 10 is rotated from the right writing state to the left of the table 1 by the sleeve 21 (as shown by arrow B in fig. 2), the table 10 can be moved inward to approach the table 1 by the rotation of the shaft 23 (as shown by arrow a in fig. 2), and the table 10 is parallel to the table 1 to form a left writing state as shown in fig. 2.

In the embodiment shown in fig. 10 and 11, the positioning device 30 forms a pull-ring type fastener 31 without limitation, the pull-ring type fastener 31 includes a pull-ring portion 311; wherein the locking pin member 33 further comprises a spring portion 331, a mounting portion 332 and a locking pin 333; the pull ring portion 311 has a third receiving space 3111 and a latch fixing portion 3112, the third receiving space 3111 has a through hole 3113 and a first locking point 3114 for fixing the spring portion 331, and the latch fixing portion 3112 is for fixing the latch 333; the mounting portion 332 has a fourth accommodating space 3321, and the fourth accommodating space 3321 has a second locking point 3322 and a pin limiting hole 3323; wherein the pull ring portion 311 is mounted on the fourth accommodating space 3321 of the mounting portion 332; wherein the latch 333 is selectively latched into at least one positioning hole 231 provided on the rotating shaft 23 as shown by the arrow C direction in fig. 11.

When the pull ring portion 311 is mounted on the mounting portion 332, the pull ring portion 311 can be pulled to compress the pin 333 to the second latching point 3322 by the elastic force of the spring portion 331 and move away from the at least one positioning hole 231 of the rotation shaft 23, or the pull ring portion 311 can be released to allow the pin 333 to be elastically extended from the second latching point 3322 by the elastic force of the spring portion 331 and be clamped in the at least one positioning hole 231 of the rotation shaft 23 as shown in the direction of arrow C in fig. 11.

In the embodiment shown in fig. 15 to 17, the positioning device 30 forms an automatic locking member 32, but is not limited thereto, and the automatic locking member 32 further includes a mounting portion 321; wherein the locking member 33 further comprises a spring 334 and a locking ball 335; wherein the mounting portion 321 has a bayonet member mounting portion 3211 into which the bayonet member 33 is mounted; wherein the locking ball 335 is pressed into the locking member 33 or extended out of the locking member 33 by the elastic force of the spring 334; wherein the locking ball 335 can be selectively locked into at least one positioning hole 231 of the rotating shaft 23 as shown by arrow E in fig. 17.

When the detent member 33 is mounted on the mounting portion 321, the detent member 33 can be rotated by rotating the first element 12, so that the locking ball 335 is pressed into the interior of the detent member 33 by the elastic expansion force of the spring 334 of the detent member 33, so that the locking ball 335 is away from the at least one positioning hole 231 of the rotating shaft 23, or the table member 10 can be rotated, so that the locking ball 335 extends out of the interior of the detent member 33 by the elastic force of the spring 334 of the detent member 33, and is locked in the at least one positioning hole 231 of the rotating shaft 23, as shown in the direction of arrow E in fig. 17.

Referring to fig. 18 to 22 and 27, a seat fixing member 40 is further provided below the seat 60, but not limited thereto, and a rotation limiting groove 41 for limiting the rotation of the seat fixing member 40 by 180 ° horizontally and a sleeve hole 42 are provided at the bottom of the seat fixing member 40.

Referring to fig. 18 to 22 and 27, the foot stand 50 includes, from bottom to top, a plurality of pulley blocks 51, a ring frame bottom 52, a support 53, an elastic member 54, an inner bearing 55, a limit post 56, an outer shaft sleeve 57 and a steam rod 58, but not limited thereto; wherein the bracket 53 is provided with a fifth accommodating space 531, the fifth accommodating space 531 is provided with a steam rod slot 5311, a bearing slot 5312 and an elastic member slot 5313 therein, the steam rod slot 5311 is provided for the steam rod 58 to be disposed therein; wherein the elastic member 54 is disposed in the elastic member slot 5313 of the bracket 53; wherein the inner bearing 55 is disposed in the bearing slot 5312 of the bracket 53 and covers the steam rod 58, the bottom surface of the inner bearing 55 is provided with at least one fixing portion 551 for fixing the elastic element 54 at an angle, the surface of the inner bearing 55 is provided with a limit fixing portion 552, one side of the inner bearing 55 is provided with a fastening portion 553 for fastening the inner bearing 55 with a fastening portion 211 further disposed on the sleeve 21 by the fastening portion 553 to combine the inner bearing 55 with the sleeve 21; wherein the lower portion of the limiting column 56 is disposed in the limiting fixing portion 552 of the inner bearing 55, and the upper portion of the limiting column 56 passes through the sleeve 21 and the outer sleeve 57 and abuts against the limiting rotary groove 41 of the seat fixing member 40; the outer sleeve 57 is disposed between the bearing slot 5312 and the position-limiting rotation slot 41 of the seat fixing member 40, and covers the sleeve 21, the inner bearing 55 and the steam rod 58, wherein the outer sleeve 57 has a slot 571 with a downward opening for the outer sleeve 57 to be locked at the connection position of the sleeve 21 and the rod member 22.

The ring-shaped bottom 52 is more stable and less prone to be overturned than the conventional claw-shaped bottom structure, so as to increase the safety of the user, and the inside of the ring frame of the ring-shaped bottom 52 is further provided with a mesh structure without limitation, thereby providing the convenience of carrying articles.

Referring to fig. 22, 25 and 26, when the steam rod 58 is stationary, the seat fixing member 40 can perform the rotation restriction of 180 ° horizontally on the steam rod 58 by virtue of the restriction relationship between the restriction rotary groove 41 and the restriction column 55 as shown by the arrow H direction in fig. 26.

Referring to fig. 22, 23 and 24, the bearing positioning device 53 enables the inner bearing 55, the sleeve 21 and the outer sleeve 56 to form a locked state (as shown in fig. 23) in which the sleeve 21 cannot rotate or a movable state (as shown in the direction of arrow G in fig. 24) in which the sleeve 21 can rotate.

Referring to fig. 22, 23 and 24, when the steam rod 58 is stationary and the sleeve 21 is in a movable state, the inner bearing 55, the sleeve 21 and the outer sleeve 56 can perform an angular horizontal rotational displacement with respect to the steam rod 58 as shown by the direction of arrow G in fig. 24.

The support rod 20 can be further assembled with the steam rod of various chairs by means of the sleeve 21 without limitation, so that the chair without the table plate design can also use the table plate, which helps users to reduce the cost without buying the whole set of chairs with the table plate, as shown in fig. 1 and 28, the table plate 10 can be respectively installed on different types of chairs by means of the support rod 20.

Referring to fig. 29, the second slot 133 of the table member 10 further includes, but is not limited to, a slide rod 19; the rod 191 of the slide rod 19 is disposed through a track 142 of the second sliding member 14, such that the slide rod 19 can slide along the rod 191 of the slide rod 19 along a track.

Referring to fig. 28, the table member 10 is further provided with a beverage placing member 70 and an object holding member 80, but not limited thereto; the object holder 80 further includes, but is not limited to, a paper file holder (for holding books) or an electronic device holder (for holding a tablet computer), so as to reduce the use of the user's hands, and facilitate the user to perform a document operation under a more comfortable condition.

Referring to fig. 29, the first receiving space 111 of the upper cover 11 further has a supporting plate 112 therein, but not limited thereto, the supporting plate 112 is located between the upper cover 11 and the bottom cover 13 to increase the supporting force of the upper cover 11, so as not to influence the overall operation of the desk 10 by the downward pressure of the user's hand.

In addition, in the embodiment shown in fig. 30 to 34, which is applied to other than the chair, the lower end of the strut 20 is further tied to a connecting portion 25; wherein the table member 10 can be combined with a base 24 on the legs of the bed 3 (as shown in fig. 30), the sofa 4 (as shown in fig. 31), the table 5 (as shown in fig. 32), the pulley chassis 6 (as shown in fig. 33) or the conjoined chair 7 (as shown in fig. 34) by means of the connecting portion 25 of the strut 20; wherein the table member 10 can slide by means of the first slide member 12 to adjust the distance to the bed 3, the sofa 4, the table 5, the pulley chassis 6 or the conjoined chair 7.

Compared with the prior art, the table board 1 of the invention has the following advantages:

(1) the desk plate 1 of the present invention can be installed on a chair 2, a bed 3 (as shown in fig. 30), a sofa 4 (as shown in fig. 31), a table 5 (as shown in fig. 32), a pulley chassis 6 (as shown in fig. 33) or a conjoined chair 7 (as shown in fig. 34) for a user to use, which relatively increases the application range of the writing desk plate and is advantageous for the manufacturing end and the consuming end.

(2) The upper cover plate 11 and the bottom cover plate 13 of the table top 10 of the present invention can slide relative to the first sliding member 12 of the table top 10 with damping effect by virtue of the movable engagement relationship between the first teeth 134 and the damping members 16, so as to relatively reduce the sliding friction, which is beneficial to the convenience of operation at the consumer end or the user end, and each component is not easy to damage due to small friction.

(3) The desk plate 10 of the present invention can perform a horizontal rotation displacement of any angle around the desk plate 1 by means of the sleeve 21 of the supporting rod 20, i.e. the using end can position the writing desk plate at a desired application angle or position after adjustment, which relatively provides convenience for the using end.

(4) The table member 10 of the present invention can rotate by means of the sleeve 21, and the components are relatively simple and not easy to damage, and are beneficial to the assembly operation of the manufacturing end or the consumption end or reduce the manufacturing cost.

The foregoing description is intended to be illustrative rather than limiting, and it will be appreciated by those skilled in the art that many modifications, variations or equivalents may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A table board is characterized by comprising a table board part, a supporting rod and a positioning device, wherein:

the supporting rod is provided with an upper end and a lower end which extends downwards for a length from the upper end, the upper end upwards supports the table plate and forms a rotating shaft, and at least one positioning hole is formed in the rotating shaft;

the table plate piece comprises an upper cover plate, a first sliding piece and a bottom cover plate, wherein the bottom cover plate and the upper cover plate are combined into a structural body up and down correspondingly so as to move forwards and backwards relative to the first sliding piece; the upper cover plate is provided with a first accommodating space for accommodating the first sliding part and the bottom cover plate; the first sliding part is provided with a second accommodating space; the bottom cover plate is provided with a front-back first sliding chute for the first sliding part to slide in the first sliding chute in a front-back relative manner, and the bottom of the first sliding chute is provided with a front-back strip-shaped through hole; wherein the rotating shaft formed at the upper end of the supporting rod penetrates through the through hole of the bottom cover plate from bottom to top to be combined and fixed with the first sliding piece; the table plate piece also comprises at least one damping piece which is respectively embedded into an embedding groove arranged on the first sliding piece, and each damping piece is movably meshed with a first front-back tooth row arranged in a first sliding groove of the bottom cover plate, so that the upper cover plate and the bottom cover plate of the table plate piece can slide back and forth relative to the first sliding piece of the table plate piece with a damping effect by virtue of the movable meshing relationship between the first tooth row and each damping piece; the desk plate part also comprises two shutter groups, the two shutter groups are positioned between the first sliding part and the first sliding groove of the bottom cover plate and are respectively and symmetrically arranged at the front end and the rear end of the first sliding groove, so that each shutter group can respectively move forwards and backwards to shield the through hole of the bottom cover plate in a downward movable manner; each shutter group is respectively provided with a first shutter and a second shutter, each first shutter is provided with a first sliding groove part and a first sliding rail part, each second shutter is provided with a second sliding groove part and a second sliding rail part, and the first shutter of each shutter group is movably connected with the second sliding rail part of the second shutter by virtue of the first sliding rail part so as to enable the second shutter and the first shutter of each shutter group to be relatively unfolded or folded in a sliding way; wherein, the bottom surfaces of the front and back ends of the first sliding part are respectively provided with two sliding blocks for respectively penetrating into the first sliding chute parts of the corresponding first shielding plates from top to bottom; wherein, the inner surfaces of the front and back ends of the first chute of the bottom cover plate are respectively provided with two sliding blocks for respectively and correspondingly penetrating into the second chute parts of the corresponding second shielding plates from bottom to top; when the first shutter plate and the second shutter plate of one shutter plate group in the two shutter plate groups are driven to relatively slide and expand, the first shutter plate and the second shutter plate of the other shutter plate group in the two shutter plate groups are driven to relatively slide and overlap, so that when the upper cover plate and the bottom cover plate of the table plate piece relatively slide back and forth relative to the first sliding piece of the table plate piece, the first shutter plate and the second shutter plate of each shutter plate group can synchronously slide back and forth and relatively expand or overlap to respectively downwards and movably shield the through hole of the bottom cover plate;

the positioning device is arranged in the second accommodating space of the first sliding part and comprises a movable clamping pin piece, and the movable clamping pin piece can be operated to extend out to be clamped in or retract to be separated from at least one positioning hole on a rotating shaft formed at the upper end of the supporting rod; when the movable pin clamping piece is operated to retract and is separated from a positioning hole on a rotating shaft formed at the upper end of the supporting rod, the table piece can be operated to horizontally rotate so as to adjust or select the angle of the table piece relative to the upper end of the supporting rod; when the movable latch piece is operated to extend out and is clamped in a positioning hole on a rotating shaft formed at the upper end of the supporting rod, the table plate piece is positioned at an angle relative to the upper end of the supporting rod.

2. A table as defined in claim 1 wherein: the bottom cover plate of the table plate piece is further provided with a front-back second sliding chute parallel to the first sliding chute; wherein the table member further comprises a second sliding member slidably disposed in the second sliding groove; the table member further comprises a connecting member having two connecting ends and respectively connected to the first sliding member and the second sliding member so that the first sliding member and the second sliding member can slide synchronously by the connecting member.

3. A table as defined in claim 2 wherein: the table component further comprises an inner cover plate, and the inner cover plate is arranged on the second sliding groove in a support mode so that the second sliding component can be limited to slide between the inner cover plate and the second sliding groove.

4. A table as defined in claim 3 wherein: the table plate further comprises two damping members, the two damping members are respectively embedded in two embedding grooves symmetrically formed in the second sliding member, and the two damping members can be movably engaged with a front-back second tooth row arranged in a second sliding groove of the bottom cover plate, so that the second sliding member can slide relative to the bottom cover plate of the table plate in the front-back direction with a damping effect by virtue of the movable engagement relationship between the second tooth row and each damping member.

5. A table as defined in claim 1 wherein: the positioning device forms a pull ring type locking piece which comprises a pull ring part; wherein the bayonet lock piece further comprises a spring part, an installation part and a bayonet lock; the pull ring part is provided with a third accommodating space and a bayonet lock fixing part, the third accommodating space is internally provided with a through hole and a first clamping point for fixing the spring part, and the bayonet lock fixing part is used for fixing the bayonet lock; the mounting part is provided with a fourth accommodating space, and a second clamping point and a clamping pin limiting hole are arranged in the fourth accommodating space; the pull ring part is arranged on the fourth accommodating space of the mounting part; wherein the bayonet lock can be selectively clamped into at least one positioning hole arranged on the rotating shaft; when the pull ring part is installed on the installation part, the pull ring part can be pulled to enable the bayonet lock to be compressed towards the second clamping point by means of the elastic force of the spring part and to be far away from at least one positioning hole of the rotating shaft, or the pull ring part is released to enable the bayonet lock to be elastically extended from the second clamping point by means of the elastic force of the spring part and to be clamped into at least one positioning hole of the rotating shaft.

6. A table as defined in claim 1 wherein: the positioning device forms an automatic locking piece, and the automatic locking piece further comprises an installation part; wherein the clamping pin piece further comprises a spring and a clamping ball; wherein the mounting portion has a bayonet member mounting portion into which the bayonet member is mounted; wherein the locking ball can be pressed into the inside of the locking pin member or extend out of the locking pin member by the elastic force of the spring; wherein the locking ball can be selectively locked in at least one positioning hole of the rotating shaft; when the clamping pin piece is arranged on the installation part, the clamping pin piece can be rotated by rotating the first element to enable the clamping ball to be pressed into the clamping pin piece by the elastic expansion force of the spring of the clamping pin piece so as to enable the clamping ball to be far away from at least one positioning hole of the rotating shaft, or the table plate piece is rotated to enable the clamping ball to be stretched out from the inside of the clamping pin piece by the elastic force of the spring of the clamping pin piece so as to be clamped into at least one positioning hole of the rotating shaft.

7. A table as defined in claim 1 wherein: a sleeve is formed at the lower end of the supporting rod, and a rod piece is arranged between the sleeve and the rotating shaft; wherein the sleeve can be pivotally sleeved on the bottom of a chair; wherein the desk plate piece can perform horizontal rotary displacement of any angle around the chair by virtue of the sleeve of the supporting rod; when the desk plate piece horizontally rotates to be close to the chair through the sleeve, the desk plate piece can slide through the first sliding piece to adjust the distance between the desk plate piece and the chair.

8. A table as defined in claim 7 wherein: the bottom of the chair further comprises a seat piece and a foot seat; wherein the seat part is supported on the foot seat; wherein the supporting rod is rotatably arranged between the seat piece and the foot seat for a user to write left or right; the sleeve is pivotally sleeved on the foot seat of the chair so that the supporting rod can pivotally move relative to the foot seat; wherein the foot seat is arranged at the bottom of the chair to support the table board and the chair.

9. A table as defined in claim 8 wherein: a seat fixing piece is further arranged below the seat piece, and the bottom of the seat fixing piece is provided with a limiting rotary groove and a trepan for limiting the rotation of 180 degrees horizontally.

10. A table as defined in claim 9 wherein: the foot seat comprises a plurality of pulley blocks, a ring frame-shaped bottom, a bracket, an elastic piece, an inner bearing, a limiting column, an outer shaft sleeve and a steam rod from bottom to top; wherein the bracket is provided with a fifth accommodating space, the fifth accommodating space is internally provided with a steam rod slotted hole, a bearing slotted hole and an elastic element slotted hole, and the steam rod slotted hole is used for the steam rod to be arranged therein; wherein the elastic piece is arranged in the elastic piece slot of the bracket; the inner bearing is arranged in a bearing slot of the bracket and is wrapped on the periphery of the steam rod, the bottom surface of the inner bearing is provided with at least one fixing part for fixing the elastic piece at an angle, the surface of the inner bearing is provided with a limiting fixing part, and one side of the inner bearing is provided with a clamping part for clamping the inner bearing with a clamped part further arranged on the sleeve by virtue of the clamping part so as to combine the inner bearing and the sleeve together; wherein the lower part of the limiting column is arranged in the limiting fixing part of the inner bearing, and the upper part of the limiting column penetrates through the sleeve and the outer shaft sleeve and abuts against the limiting rotary groove of the seat fixing part; the outer shaft sleeve is arranged between the bearing slotted hole and the limiting rotary groove of the seat part fixing part and covers the sleeve, the inner bearing and the steam rod, and the outer shaft sleeve is provided with a clamping groove with a downward opening for clamping the outer shaft sleeve at the connecting part of the sleeve and the rod piece.

11. A table as defined in claim 10 wherein: when the steam rod is not moved, the seat fixing piece can horizontally rotate 180 degrees on the steam rod by means of the limit relation between the limit rotary groove and the limit column.

12. A table as defined in claim 11 wherein: the bearing positioning device can enable the inner bearing, the sleeve and the outer shaft sleeve to form a locked state that the sleeve cannot rotate or a movable state that the sleeve can rotate.

13. A table as defined in claim 12 wherein: when the steam rod is not moved and the sleeve is in a movable state, the inner bearing, the sleeve and the outer shaft sleeve can horizontally rotate and displace at an angle relative to the steam rod.

14. A table as defined in claim 3 wherein: the second chute of the desk plate part is further provided with a slide rail rod; the rod of the slide rail rod is inserted into a track part further arranged on the second sliding part, so that the slide rail rod can enable the second sliding part to slide along the rod of the slide rail rod along a certain track.

15. A table as defined in claim 1 wherein: the lower end of the supporting rod is further provided with a connecting part; wherein the desk plate piece can be combined with a base on the support legs of a bed, a sofa, a desk, a pulley chassis or a conjoined chair by virtue of the connecting part of the support rod; wherein the desk plate part can slide by virtue of the first sliding part so as to adjust the distance between the desk plate part and a bed, a sofa, a desk, a pulley chassis or a conjoined chair.