CN214711161U - Table plate supporting unit and table - Google Patents

Abstract

The utility model discloses a table support unit and a table, which comprises a base fixing plate, a first support arm, a second support arm and a support plate, wherein the base fixing plate, the first support arm, the second support arm and the support plate form a four-bar linkage mechanism, the tail end of the first support arm, which is parallel to each other, of the first support arm is hinged with the head end of the base fixing plate, the tail end of the second support arm is hinged with the tail end of the base fixing plate, the head end of the first support arm is hinged with the head end of the support plate, the head end of the second support arm is hinged with the tail end of the support plate, and a table support piece used for connecting a table is hinged on the support plate, and the table support piece can rotate around the hinged point between the table support piece and the support plate, so that the angle between the table support piece and a horizontal plane is changed; when the four-bar mechanism deforms, the supporting plate moves up and down to drive the table board supporting piece to do ascending or descending action in the vertical direction. Only the table plate needs to be pulled, and the four-bar mechanism is matched with the lifting of the table plate to deform, so that the lifting purpose is achieved. The height of the table plate can be adjusted only by rotating the table plate connected with the table plate supporting piece.

Description

Table plate supporting unit and table

Technical Field

The utility model relates to a study table field, more specifically the theory relates to a table support element and table utensil.

Background

Along with the continuous progress of national material culture and spiritual civilization, people pay more and more attention to education, auxiliary equipment such as education facilities, education equipment and teaching aids become more and more paid more and more attention to education workers and parents of students, and a table is used as the most basic learning apparatus and is generally formed by fixing a table plate on supporting units such as table legs. Students can almost leave the study table every day for doing lessons, reading and using computers, but different students have different heights, and the height of the same student can be changed continuously along with the growth of the age. If the height of the student desk can not be adjusted, the student desk can not be used by students with different heights, and the children can be short-sighted, humpback and even lateral bending of the spine due to improper height, distance, posture and angle.

The learning table with sitting posture corrector of application No. 201920942314.1 proposes a table comprising a fixed table plate and a movable flap, wherein the fixed table plate and the movable flap can be raised or lowered synchronously by means of a lifting device adjustable by a handle, and the movable flap can be rotated about the edge of the table.

However, the learning table needs to be lifted to the height of the turnover plate, and the lifting purpose of the turnover plate and the table plate can be achieved only by simultaneously lifting the turnover plate and the table plate through a plurality of circles of handles which are turned by a knob, so that the learning table is time-consuming and labor-consuming. And the bottom of the turning plate is usually driven and supported by an air cylinder, so that the stroke is short, and the requirements on the angle of the table plate for multiple purposes such as reading, writing, drawing and the like cannot be met.

Disclosure of Invention

In order to solve the technical problem, the utility model aims at providing a table support unit convenient to lifting table height also is convenient for adjust the turned angle of table.

Solve the technical problem, the utility model discloses take following technical scheme:

a table support unit comprises a base fixing plate, a first support arm, a second support arm and a support plate, wherein the base fixing plate, the first support arm, the second support arm and the support plate form a four-bar linkage mechanism, the first support arm and the second support arm are parallel to each other, the tail end of the first support arm is hinged to the head end of the base fixing plate, the tail end of the second support arm is hinged to the tail end of the base fixing plate, the head end of the first support arm is hinged to the head end of the support plate, the head end of the second support arm is hinged to the tail end of the support plate, a table support member used for connecting a movable table is hinged to the support plate, and the table support member can rotate around a hinged point of the table support member and the support plate, so that an angle between the table support member and a horizontal plane is changed; when the four-bar mechanism deforms, the supporting plate moves up and down to drive the table board supporting piece to ascend or descend in the vertical direction.

In a further scheme, the table support device further comprises an elastic part, wherein the elastic part acts on the first support arm or the second support arm, and when the four-bar linkage deforms to drive the table support part to descend, the elastic part deforms; when the four-bar linkage mechanism deforms to drive the table support piece to ascend, the restoring force of the elastic piece is matched with the first support arm and the second support arm to drive the table support piece to ascend.

Because the elastic component acts on first support arm or second support arm, when the support arm the base fixed plate takes place to rotate and drives when table support piece rises, the restoring force cooperation of elastic component first support arm and second support arm drive table support piece rises, has offset partial weight to required effort when having reduced the operator and having rotated the first support arm of lifting has reduced operator's use burden. When the first supporting arm rotates around the base fixing plate to drive the table support piece to descend, too large acting force is not needed due to the self gravity action of the plates such as the first supporting arm.

In a further scheme, the tail end of the first support arm is hinged to the tail end of the base fixing plate through a first inserted link, and the tail end of the second support arm is hinged to the tail end of the base fixing plate through a second inserted link; the elastic piece is a coil spring which is sleeved on the first inserted link or the second inserted link; when the coil spring is sleeved on the telescopic first inserted link, the coil spring is clamped between the tail end of the first support arm and the base fixing plate, one elastic arm of the coil spring is connected with the first inserted link, and the other elastic arm of the coil spring is connected with the first support arm; the coil spring is sleeved on the second inserted rod and clamped between the tail end of the second supporting arm and the base fixing plate, one elastic arm of the coil spring is connected with the inserted rod, and the other elastic arm of the coil spring is connected with the second supporting arm.

In a further scheme, the first support arm and the second support arm are respectively provided with a clamping groove and a limiting rod, the clamping groove comprises a first clamping groove and a second clamping groove, the first clamping groove and the second clamping groove are simultaneously arranged on one of the first support arm and the second support arm along the direction from the support plate to the base fixing plate, and the limiting rod is arranged on the other of the first support arm and the second support arm; when the first supporting arm rotates around a hinge point between the first supporting arm and the base fixing plate to drive the table board supporting piece to ascend to the highest point, the limiting rod is positioned in the first clamping groove; when the first supporting arm rotates around a hinge point between the first supporting arm and the base fixing plate to drive the table support to descend to the lowest point, the limiting rod is located in the second clamping groove.

The highest point (namely the highest position) and the lowest point (namely the lowest position) of the table plate can be preset according to the use condition of a user, one of the first supporting arm and the second supporting arm is provided with a first clamping groove and a second clamping groove, the other one of the first supporting arm and the second supporting arm is provided with a limiting rod, and when the first supporting arm drives the table plate supporting piece to ascend to the highest point, the limiting rod is positioned in the first clamping groove; when the first supporting arm drives the table supporting piece to descend to the lowest, the limiting rod is located in the second clamping groove, the stroke limiting effect is achieved, and the table is enabled to move up and down only between the highest position and the lowest position.

The utility model simultaneously provides a table, which comprises a movable table plate, a supporting beam and a table plate supporting unit in the scheme, wherein the supporting beam is fixed, the base fixing plate is fixedly connected with the supporting beam, and the table plate supporting piece is fixedly connected with the bottom end surface of the movable table plate; the supporting beam is provided with a first telescopic supporting component, the first telescopic supporting component acts on the four-bar linkage mechanism, and when the four-bar linkage mechanism deforms to drive the table support piece to ascend or descend to a specified position, the first telescopic supporting component acts on the four-bar linkage mechanism to enable the four-bar linkage mechanism and the supporting beam to be relatively fixed; the bottom end face of the movable table plate is provided with a second telescopic supporting component, the second telescopic supporting component acts on the supporting plate, when the table plate supporting piece rotates to a specified position relative to the supporting plate, the second telescopic supporting component acts on the supporting plate to enable the supporting plate to be fixed relative to the table plate supporting piece.

The table plate supporting unit acts on the movable table plate, when the movable table plate rises or descends to a specified position, the first telescopic supporting assembly acts on the four-bar mechanism to enable the four-bar mechanism and the supporting cross beam to be relatively fixed, and therefore the height of the table plate is not changed any more. And when the movable table plate rotates to the designated position relative to the supporting plate, the second telescopic supporting component acts on the supporting plate to enable the supporting plate to be relatively fixed on the table plate supporting piece, so that the angle of the movable table plate is not changed any more.

Meanwhile, the base fixing plate is fixed on the supporting cross beam between the two supporting plates instead of being fixed on the traditional table legs or table feet, so that the lengths of the first supporting arm and the second supporting arm do not need to reach the height of the whole table, and the material consumption is greatly reduced.

In a further scheme, the number of the table support units is two, the two table support units are arranged at intervals along the length direction of the support beam, first support arms in the two table support units are connected through a first connecting pipe, and longitudinal connecting plates in the two table support units are connected through a second connecting pipe.

The first supporting arms in the two table supporting units are connected through the first connecting pipe, so that the first supporting arms in the two table supporting units can rotate synchronously, the supporting plates in the two table supporting units can rotate synchronously, the table supporting pieces can ascend or descend at the same height, and the problem that the table is inclined is avoided. Similarly, the longitudinal connecting plates in the two table support units are connected through the second connecting pipe, so that the two table support pieces rotate synchronously at the same angle, and the problem of table deflection is avoided.

In a further scheme, one end of the first telescopic supporting component is hinged with the supporting cross beam, and the other end of the first telescopic supporting component is hinged with the first connecting pipe; when the first support arm rotates around a hinge point between the first support arm and the base fixing plate, the first telescopic support component is in an unlocked state, and when the first support arm rotates to a specified position, the first telescopic support component is in a locked state; the one end of the flexible supporting component of second with the bottom face of activity table is articulated, the flexible supporting component's of second other end with the second connecting pipe is articulated, when table support piece rotated around its pin joint with the backup pad, the flexible supporting component of second was in the unblock state, when table support piece rotated to the assigned position, the flexible supporting component of second was in the locking state.

In a further aspect, the first telescopic supporting component is any one of a controllable gas spring or an electric push rod, and the second telescopic component is also any one of a controllable gas spring or an electric push rod. The first controllable gas spring is matched with the first connecting pipe to rotate to stretch out and draw back, and after the table plate is lifted to a designated position, the first controllable gas spring is locked to support the first supporting arm and other components so as to keep the structure relatively fixed. Similarly, the second controllable gas spring is matched with the second connecting pipe to rotate to stretch out and draw back, and after the table plate rotates to the designated position, the second controllable gas spring is locked to support and limit the table plate connecting piece so as to keep the relative fixation of the structure.

In a further scheme, two ends of the first connecting pipe are respectively and fixedly provided with first connecting plates, and the two first connecting plates are respectively detachably connected with first supporting arms in the two table supporting units through screws; and two ends of the second connecting pipe are respectively and fixedly provided with a second connecting plate, and the two second connecting plates are respectively detachably connected with the longitudinal connecting plates in the two table plate supporting units through screws. The first connecting pipe and the second connecting pipe can be detachably connected with the two table plate supporting units, so that respective components can be conveniently stored and can also be conveniently installed.

In a further scheme, when the movable table plate is in a horizontal state, the bottom end face of the movable table plate is abutted against the top end plate face of the supporting plate.

Advantageous effects

Because the base fixing plate, the first supporting arm, the second supporting arm and the supporting plate are sequentially hinged end to end, the four-bar linkage mechanism is formed, when the table support piece is connected with the table, the table is only required to be pulled, the table drives the table support piece to move up and down, and the four-bar linkage mechanism is matched with the lifting of the table to deform, so that the lifting purpose is achieved.

And because base fixed plate, first support arm, second support arm and backup pad have constituted a four-bar linkage, its structure is articulated more stably with base fixed plate, backup pad respectively in the head end that only passes through first support arm, and the self of backup pad can not take place to rotate, takes place the in-process that deformation in order to drive the table lift at four-bar linkage, and the table remains parallel with the horizontal plane all the time, can not produce the change in the angle, only can the regulation of height in the direction of height.

Meanwhile, as the table plate supporting piece is hinged with the supporting plate, the included angle of the connected table plate relative to the horizontal plane can be changed as long as the table plate connected with the table plate supporting piece is rotated, and the dual flexible adjustment of the height and the angle of the table plate can be realized.

Drawings

FIG. 1 is a schematic structural view of a table;

FIG. 2 is a schematic structural view of the table with the movable table board lowered;

FIG. 3 is a side view of the table with the movable table plate lowered;

FIG. 4 is a front view of the table with the movable table plate lowered;

FIG. 5 is a cross-sectional view A-A of FIG. 4;

FIG. 6 is a side view of the table with the movable table plate raised;

FIG. 7 is a front view of the table with the movable table plate raised;

FIG. 8 is a cross-sectional view taken along line B-B of FIG. 7;

FIG. 9 is a schematic structural view of the table after the movable table board rotates;

FIG. 10 is a front view of the table after the movable table board is rotated;

FIG. 11 is a cross-sectional view of C-C of FIG. 10;

FIG. 12 is a schematic structural view of the table after the movable table board rotates by another angle;

FIG. 13 is a front view of the table after the movable table is rotated by another angle;

FIG. 14 is a cross-sectional view D-D of FIG. 13;

fig. 15 is a schematic structural view of the table support unit.

The reference numerals in the schematic drawings illustrate:

1-a fixed table, 2-a movable table, 3-a table foot rest, 4-a supporting beam, 5-a table leg, 6-a table supporting unit, 7-a table supporting piece, 8-a base fixing plate, 9-a first supporting arm, 10-a second supporting arm, 11-a supporting plate, 12-a first connecting pipe, 13-a second connecting pipe, 14-a first telescopic supporting component, 14 a-a first controllable gas spring, 15-a second telescopic supporting component, 15 a-a second controllable gas spring, 16-a coil spring, 17-a limiting rod, 18-a first clamping groove, 19-a second clamping groove, 20-a first connecting plate and 21-a second connecting plate.

Detailed Description

For a further understanding of the present invention, reference will now be made in detail to the present invention, examples of which are illustrated in the accompanying drawings.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Example 1: referring to fig. 1-15, the present embodiment provides an adjustable learning desk, which includes a desk board and a desk foot frame 3, wherein the desk foot frame 3 includes a supporting beam 4 and two desk legs 5, and two ends of the supporting beam 4 are respectively fixedly connected to the two desk legs 5, so that the supporting beam 4 itself remains stationary. The table plate comprises a fixed table plate 1 and a movable table plate 2, wherein the fixed table plate 1 is fixedly arranged on the two table legs 5, and the movable table plate 2 is connected with the supporting beam 4 through a table plate supporting unit 6.

Specifically, the table support unit 6 includes a link mechanism and a table support 7. The link mechanism is arranged on the table leg frame 3, the table support member 7 is hinged with the link mechanism, and the movable table 2 is arranged on the table support member 7. When the link mechanism deforms, the link mechanism drives the table support piece 7 and the movable table 2 to ascend and descend relative to the fixed table 1. And because table support piece 7 is articulated with link mechanism, when table support piece 7 rotated around its pin joint with link mechanism, the face of activity table 2 can change with the contained angle between the horizontal plane and realize rotating.

More specifically, in the present embodiment, as shown in fig. 15, the link mechanism is a four-bar link mechanism, and the four-bar link mechanism includes a base fixing plate 8, a first support arm 9, a second support arm 10, and a support plate 11. Wherein base fixed plate 8 and supporting beam 4 fixed connection, first support arm 9 and second support arm 10 are parallel to each other, and the tail end of first support arm 9 is articulated with the head end of base fixed plate 8, and the tail end of second support arm 10 is articulated with the tail end of base fixed plate 8, the head end of first support arm 9 with the head end of backup pad 11 is articulated, and the head end of second support arm 10 is articulated with the tail end of backup pad 11. And the table support member 7 is hinged with the support plate 11, so that the table support member 7 can rotate around a hinged point between the table support member and the support plate 11, and the angle between the table support member and the horizontal plane is changed. As shown in fig. 11 and 14, when the table support 7 rotates, the movable table 2 is also driven to rotate, so that an included angle between the surface of the movable table 2 and the horizontal plane changes. As shown in fig. 5 and 8, when the four-bar linkage deforms, the supporting plate 11 moves up and down to drive the table support 7 and the movable table 2 to move up or down in the vertical direction.

And because base fixed plate 8, first supporting arm 9, second supporting arm 10 and backup pad 11 have constituted a four-bar linkage, its structure is compared in only the head end through first supporting arm 9 respectively with base fixed plate 8, the backup pad 11 is articulated more stable, backup pad 11 self can not take place to rotate, take place the in-process that deformation in order to drive the table lift at four-bar linkage, the face of activity table 2 remains parallel with the horizontal plane all the time, can not produce the change in the angle, only can the regulation of height in the direction of height.

In order to improve the stability of the movable table 2, the number of the table support units 6 is two, the two table support units 6 are arranged at intervals along the length direction of the support beam 4, the base fixing plate 8 is fixedly connected with the support beam 4, the first support arms 9 in the two table support units 6 are connected through the first connecting pipe 12, and the longitudinal connecting plates in the two table support units 6 are connected through the second connecting pipe 13. Connect the first support arm 9 in two table support units 6 through first connecting pipe 12 for first support arm 9 in two table support units 6 can rotate in step, makes backup pad 11 in two table support units 6 can rotate in step, finally makes 2 support piece of activity table can rise or descend same height, avoids appearing 2 both sides height differences of activity table and the crooked problem appears. Similarly, because the longitudinal connecting plates in the two table support units 6 are connected through the second connecting pipe 13, the two table support members 7 also rotate synchronously by the same angle, and the problem of table deflection is also avoided.

As a preferred embodiment, referring to fig. 12 and 15, first connecting plates 20 are respectively fixedly disposed at two ends of the first connecting pipe 12, and the two first connecting plates 20 are respectively detachably connected to the first supporting arms 9 of the two table supporting units 6 through screws. Two ends of the second connecting pipe 13 are respectively and fixedly provided with a second connecting plate 21, and the two second connecting plates 21 are respectively detachably connected with the longitudinal connecting plates in the two table supporting units 6 through screws. The first connecting pipe 12 and the second connecting pipe 13 can be detachably connected with the two table support units 6, which is convenient for installation and storage of respective components. During installation, the two table support units 6 may be fixed to the support beam 4, and then the first connection pipe 12 and the second connection pipe 13 may be installed. And when in storage, the first connecting pipe 12 and the second connecting pipe 13 can be detached, and each part is stored separately, so that the storage volume is reduced.

Meanwhile, in the scheme, the supporting plate 11 is a rectangular plate, and when the movable table plate 2 is in a horizontal state, the bottom end face of the movable table plate 2 is abutted to the top end plate face of the supporting plate 11. The supporting plate 11 plays a certain role in bottom supporting, and the stability of the structure is greatly improved.

In this embodiment, a first telescoping support assembly 14 and a second telescoping support assembly 15 are also included. The first telescopic supporting component 14 is disposed between the table foot frame 3 and the link mechanism, and is configured to lock the link mechanism when the link mechanism drives the table support 7 to ascend or descend to a specific position. And the second telescopic supporting component 15 is arranged between the movable table 2 and the link mechanism, and is configured to lock the table support 7 when the table support 7 rotates to a specified position around a hinge point of the table support and the link mechanism.

In this embodiment, the first telescopic support assembly 14 and the second telescopic support assembly 15 are controllable gas springs, the first telescopic support assembly 14 is a first controllable gas spring 14a, and the second telescopic support assembly 15 is a second controllable gas spring 15 a. One end of a first controllable gas spring 14a is hinged to the supporting beam 4 and the other end of the first controllable gas spring 14a is hinged to the first connecting pipe 12. When the first support arm 9 is rotated around its hinge point with said base fixing plate 8, the first controllable gas spring 14a is in an unlocked state. When the first support arm 9 is rotated to a given position, the first controllable gas spring 14a is in a locked state. One end of the second controllable gas spring 15a is hinged to the bottom end face of the movable table 2, the other end of the second controllable gas spring 15a is hinged to the second connecting pipe 13, and when the table support piece 7 rotates around the hinged point of the table support piece and the supporting plate 11, the second controllable gas spring 15a is in an unlocking state. And when the table support 7 is rotated to a specified position, the second controllable gas spring 15a is in a locked state.

Referring to fig. 2-8, when the user wants to increase or decrease the height of the movable table 2 to meet the height requirement, the user first unlocks the first controllable gas spring 14a by controlling the control switch provided on the first controllable gas spring 14a, so that the first controllable gas spring 14a is in an unlocked state. Then the table plate is moved upwards or the movable table plate 2 is pressed downwards, and the movable table plate 2 drives the table plate supporting piece 7 to do ascending or descending motion in the vertical direction. When the table support member 7 moves, the four-bar linkage connected to the table support member 7 is forced to deform, the first support arm 9 rotates around the hinge point between the first support arm and the head end of the base fixing plate 8, the second support arm 10 rotates around the hinge point between the second support arm and the tail end of the base fixing plate 8, and the first controllable gas spring 14a stretches or compresses in the lifting process. When the first supporting arm 9 rotates to the designated position, namely the movable table 2 is lifted to the position required by the user, the control switch is released to lock the first controllable gas spring 14a, so that the first controllable gas spring 14a is in a locked state, the four-bar mechanism cannot deform any more, and the movable table 2 is fixed.

Referring to fig. 9-14, when the user wants to adjust the rotation angle of the movable table 2 relative to the horizontal plane to satisfy a plurality of different purposes such as reading, writing, drawing, etc., the second controllable gas spring 15a is first unlocked by controlling a control switch provided on the second controllable gas spring 15a, so that the second controllable gas spring 15a is in an unlocked state. Then the user rotates the movable table 2 according to the angle requirements of the table for multiple purposes such as reading, writing and drawing, so that the movable table 2 and the table support member 7 at the bottom rotate around the hinge point of the table support member and the support plate 11, and in the rotating process, the second controllable gas spring 15a stretches or compresses. When the movable table 2 is rotated to a desired position, the control switch is released to lock the second controllable gas spring 15a, since the second controllable gas spring 15a is now in a locked state. The table support 7 can no longer rotate around the hinge point between it and the support plate 11, so that the circumferential fixation of the movable table 2 is realized.

It should be noted that, although in the present embodiment, the first telescopic supporting component 14 and the second telescopic supporting component 15 are both controllable gas springs, in the case that the first telescopic supporting component 14 can lock the link mechanism when the link mechanism drives the table support 7 to ascend or descend to the specified position, the first telescopic supporting component 14 may also adopt other telescopic supporting components in the prior art, such as an electric push rod. Similarly, when the table support 7 is ensured to rotate to a specific position around the hinge point of the table support and the link mechanism, the second telescopic support assembly 15 may also be an electric push rod under the condition that the second telescopic support assembly 15 can lock the table support 7. And the first telescopic support assembly 14 and the second telescopic support assembly 15 may adopt the same assembly or different assemblies.

In this solution, the table support unit 6 further comprises an elastic element acting on the second support arm 10. When the connecting rod mechanism deforms to drive the table support member 7 to descend, the elastic member deforms. When the link mechanism deforms to drive the table support member 7 to ascend, the restoring force of the elastic member cooperates with the first support arm 9 and the second support arm 10 to drive the table support member 7 to ascend. Specifically, the tail end of the second support arm 10 is hinged to the tail end of the base fixing plate 8 through a second inserted link. In this embodiment, the elastic element is a coil spring 16, as shown in fig. 9, the coil spring 16 is sleeved on the second insert rod, the coil spring 16 is sandwiched between the tail end of the second support arm 10 and the base fixing plate 8, one elastic arm of the coil spring 16 is connected to the insert rod, and the other elastic arm of the coil spring 16 is connected to the second support arm 10.

In addition, the first support arm 9 and the second support arm 10 are respectively provided with a clamping groove and a limiting rod 17, the clamping groove comprises a first clamping groove 18 and a second clamping groove 19, the first clamping groove 18 and the second clamping groove 19 are simultaneously arranged on one of the first support arm 9 and the second support arm 10 along the direction from the support plate 11 to the base fixing plate 8, and the limiting rod 17 is arranged on the other one of the first support arm 9 and the second support arm 10. In this embodiment, the limiting rod 17 is disposed on the first supporting arm 9, and the first engaging groove 18 and the second engaging groove 19 are disposed on the second supporting arm 10 along the direction from the supporting plate 11 to the base fixing plate 8. The highest position and the lowest position of the table can be preset according to the use condition of a user, and when the first supporting arm 9 rotates around the hinge point between the first supporting arm and the base fixing plate 8 to drive the table supporting piece 7 to ascend to the highest position, as shown in fig. 6, the limiting rod 17 is located in the first clamping groove 18. When the first supporting arm 9 rotates around the hinge point between the first supporting arm and the base fixing plate 8 to drive the table supporting member 7 to descend to the lowest position, as shown in fig. 3, the limiting rod 17 is located in the second engaging groove 19. The limiting rod 17 is matched with the first clamping groove 18 and the second clamping groove 19 to play a stroke limiting role, so that the movable table plate 2 only moves up and down between the highest position and the lowest position, the movable table plate 2 is prevented from interfering with the table foot rest 3, and the first controllable gas spring 14a and the second controllable gas spring 15a are also prevented from exceeding the stroke range.

Example 2: the main difference between this embodiment and the learning table in embodiment 1 is that in this embodiment, the elastic member acts on the first supporting arm 9. Specifically, the tail end of the first supporting arm 9 is hinged to the tail end of the base fixing plate 8 through a first inserted link. In this embodiment, the elastic member is also a coil spring 16, and the coil spring 16 is sleeved on the first plunger. A coil spring 16 is clamped between the tail end of the first support arm 9 and the base fixing plate 8, one elastic arm of the coil spring 16 is connected with the first inserted link, and the other elastic arm of the coil spring 16 is connected with the first support arm 9.

The present invention and its embodiments have been described above schematically, and the description is not limited thereto, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, without departing from the inventive spirit of the present invention, the person skilled in the art should also design the similar structural modes and embodiments without creativity to the technical solution, and all shall fall within the protection scope of the present invention.

Claims (10)

1. A table support unit is characterized by comprising a base fixing plate, a first support arm, a second support arm and a support plate, wherein the base fixing plate, the first support arm, the second support arm and the support plate form a four-bar linkage mechanism, the first support arm and the second support arm are parallel to each other, the tail end of the first support arm is hinged with the head end of the base fixing plate, the tail end of the second support arm is hinged with the tail end of the base fixing plate, the head end of the first support arm is hinged with the head end of the support plate, the head end of the second support arm is hinged with the tail end of the support plate, the support plate is hinged with a table support piece used for connecting a movable table, and the table support piece can rotate around a hinged point between the table support piece and the support plate, so that the angle between the table support piece and a horizontal plane changes; when the four-bar mechanism deforms, the supporting plate moves up and down to drive the table board supporting piece to ascend or descend in the vertical direction.

2. The table support unit of claim 1, further comprising an elastic member acting on the first support arm or the second support arm, wherein the elastic member deforms when the four-bar linkage deforms to drive the table support member to descend; when the four-bar linkage mechanism deforms to drive the table support piece to ascend, the restoring force of the elastic piece is matched with the first support arm and the second support arm to drive the table support piece to ascend.

3. A table support unit as claimed in claim 2, wherein the trailing end of the first support arm is hinged to the trailing end of the base mounting plate by a first bayonet joint, and the trailing end of the second support arm is hinged to the trailing end of the base mounting plate by a second bayonet joint; the elastic piece is a coil spring which is sleeved on the first inserted link or the second inserted link; when the coil spring is sleeved on the telescopic first inserted link, the coil spring is clamped between the tail end of the first support arm and the base fixing plate, one elastic arm of the coil spring is connected with the first inserted link, and the other elastic arm of the coil spring is connected with the first support arm; the coil spring is sleeved on the second inserted rod and clamped between the tail end of the second supporting arm and the base fixing plate, one elastic arm of the coil spring is connected with the inserted rod, and the other elastic arm of the coil spring is connected with the second supporting arm.

4. The table support unit as claimed in claim 1, wherein the first support arm and the second support arm are respectively provided with a locking slot and a limiting rod, the locking slot comprises a first locking slot and a second locking slot, the first locking slot and the second locking slot are simultaneously arranged on one of the first support arm and the second support arm along the direction from the support plate to the base fixing plate, and the limiting rod is arranged on the other of the first support arm and the second support arm; when the first supporting arm rotates around a hinge point between the first supporting arm and the base fixing plate to drive the table board supporting piece to ascend to the highest point, the limiting rod is positioned in the first clamping groove; when the first supporting arm rotates around a hinge point between the first supporting arm and the base fixing plate to drive the table support to descend to the lowest point, the limiting rod is located in the second clamping groove.

5. A table, comprising a movable table, a supporting beam and the table supporting unit of any one of the above claims 1 to 4, wherein the supporting beam is fixed, the base fixing plate is fixedly connected with the supporting beam, and the table supporting member is fixedly connected with the bottom end surface of the movable table; the supporting beam is provided with a first telescopic supporting component, the first telescopic supporting component acts on the four-bar linkage mechanism, and when the four-bar linkage mechanism deforms to drive the table support piece to ascend or descend to a specified position, the first telescopic supporting component acts on the four-bar linkage mechanism to enable the four-bar linkage mechanism and the supporting beam to be relatively fixed; the bottom end face of the movable table plate is provided with a second telescopic supporting component, the second telescopic supporting component acts on the supporting plate, when the table plate supporting piece rotates to a specified position relative to the supporting plate, the second telescopic supporting component acts on the supporting plate to enable the supporting plate to be fixed relative to the table plate supporting piece.

6. A table according to claim 5, wherein the number of the table support units is two, the two table support units are arranged at intervals along the length direction of the support beam, the first support arms of the two table support units are connected through a first connecting pipe, and the longitudinal connecting plates of the two table support units are connected through a second connecting pipe.

7. A table as claimed in claim 6, wherein one end of said first telescopic support assembly is hinged to said supporting cross-member and the other end of said first telescopic support assembly is hinged to said first connecting tube; when the first support arm rotates around a hinge point between the first support arm and the base fixing plate, the first telescopic support component is in an unlocked state, and when the first support arm rotates to a specified position, the first telescopic support component is in a locked state; the one end of the flexible supporting component of second with the bottom face of activity table is articulated, the flexible supporting component's of second other end with the second connecting pipe is articulated, when table support piece rotated around its pin joint with the backup pad, the flexible supporting component of second was in the unblock state, when table support piece rotated to the assigned position, the flexible supporting component of second was in the locking state.

8. A table according to claim 7, wherein the first telescopic support assembly is any one of a controllable gas spring or an electric push rod, and the second telescopic assembly is also any one of a controllable gas spring or an electric push rod.

9. The table as claimed in claim 6, wherein the two ends of the first connecting pipe are respectively fixedly provided with a first connecting plate, and the two first connecting plates are respectively detachably connected with the first supporting arms of the two table supporting units through screws; and two ends of the second connecting pipe are respectively and fixedly provided with a second connecting plate, and the two second connecting plates are respectively detachably connected with the longitudinal connecting plates in the two table plate supporting units through screws.

10. A table as claimed in claim 5, wherein when said movable table is in a horizontal position, the bottom end surface of said movable table is in contact with the top end surface of said supporting plate.

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