CN211910855U - Automatic upset telescopic table frame and desk - Google Patents

Abstract

The utility model discloses an automatic flexible table frame and desk overturn belongs to the desk field, the utility model provides a table frame includes the crossbeam and establishes the installation curb plate at the crossbeam both ends, still be equipped with flexible push rod and roll-over stand on the table frame, the roll-over stand rear end is articulated with the flexible end of flexible push rod, be equipped with the upset driving system that removes along with the flexible push rod is flexible on the flexible push rod, turn over the driving force system and include the driving piece that provides power for the roll-over stand and fix the drive mechanism on flexible push rod, the front end of roll-over stand is articulated on drive mechanism, drive the roll-over stand upset through drive mechanism, this table frame integrated design, can realize the dual regulation of length and angle, the user finds the most comfortable state according to the demand, more do benefit to health, and is functional strong, application scope is wide.

Description

Automatic upset telescopic table frame and desk

[ technical field ] A method for producing a semiconductor device

The utility model relates to a desk technical field, concretely relates to automatic flexible table frame and desk overturn.

[ background of the invention ]

The table is one of furniture with the widest application in life, is often used for learning, working, dining, placing articles and the like, the table top of the traditional table is horizontally fixed, the table needs to be lowered and stood when the traditional table is used for learning and working, the traditional table is easy to cause diseases such as vertebra, waist and back and the like, myopia and the like can be caused after being used for a long time, the size of the table top is also fixed, the application is single, when the use area needs to be enlarged or reduced, the whole table needs to be replaced, the cost is increased, materials are wasted, and aiming at the problems of the traditional table, the table with adjustable length or angle, such as a dining table with adjustable length according to the number of people having a meal or a drawing table with adjustable angle, but the adjustment of the angle or the length needs not to be manually adjusted and fastened by using a mechanical structure, the adjustable number of stages is limited, the length is increased and fixed, the firmness is not good, and the semi-automatic adjustment mainly based, the adjustable table has the advantages that the adjustable angle or length is discontinuous, the adjustment cannot be achieved at one time, the precision is low, the adjustable table cannot be adjusted and stopped at a proper length and position at will according to the needs of users, many unsafe factors such as oil leakage of a hydraulic cylinder or explosion of the cylinder can occur after long-term use, meanwhile, the length or height of the conventional adjustable table can be adjusted only independently, the adjustment of the length and the height cannot be achieved on the same table at the same time, and the functionality is single.

[ summary of the invention ]

The utility model aims to solve the technical problem of overcoming the defects in the prior art and designing an integrated table frame capable of realizing automatic angle and length adjustment.

Solve above-mentioned technical problem, utility model adopts following technical scheme:

the utility model provides an automatic flexible table frame overturns, the table frame includes the crossbeam and establishes the installation curb plate at the crossbeam both ends, still be equipped with flexible push rod and roll-over stand on the table frame, the roll-over stand rear end is articulated with the flexible end of flexible push rod, be equipped with the upset driving system who moves along with flexible push rod is flexible on the flexible push rod, turn over the driving force system and include the driving piece that provides power for the roll-over stand and fix the drive mechanism on flexible push rod, the front end of roll-over stand is articulated on drive mechanism, drives the roll-over stand upset through drive mechanism.

Adopt utility model's beneficial effect:

1. the table frame in this scheme installs this table frame under the desktop when using, the regulation of table frame length is realized to flexible through flexible push rod, through the upset of the frame certain angle of production under drive mechanism's drive of upset frame to the upset of the desktop of fixing above that drives, through above-mentioned integrated design, can realize the dual regulation of length and angle on a table frame, the user can be according to self condition and demand seek a standing posture or the most comfortable state of position of sitting, more do benefit to healthily, improve study and office efficiency.

2. The telescopic push rod is driven to stretch and the overturning frame is driven to overturn by two driving systems, one of the driving systems can be driven independently, so that the length adjustment or the angle adjustment can be realized independently, the synchronous driving can also be realized, the synchronous adjustment of the length and the angle can be realized, the changeable form is more, the functionality is stronger, and the application range is wide.

3. The upset desktop is fixed on the roll-over stand, if only adjust table frame length, do not adjust under the condition of roll-over stand angle, upset driving system is out of work, the roll-over stand front end is articulated with the driving medium that turns over the driving force system, the roll-over stand rear end is articulated with telescopic push rod's flexible end, upset driving system is along with telescopic push rod's flexible and synchronous motion, therefore roll-over stand front end and rear end are relative static, the distance keeps unchangeable between, can not cause the roll-over stand extrusion or buckle and warp, the stability of roll-over stand has been guaranteed, thereby the stability of desktop when the firm in connection on the table frame and removal has been guaranteed.

4. When the rear end of the roll-over stand is turned over along with the desktop, a better rear side resisting and lower side supporting effect is provided for the lower end of the turned-over desktop, and the stability of the desktop in the use process is ensured.

5. The front end and the rear end of the roll-over stand are hinged, so that in the process of turning over, when the position and the angle of the roll-over piece change along with the table top, the relative rotation is more flexible.

Preferably, the mounting side plates at the two ends are both fixedly provided with telescopic push rods, the telescopic push rods at the two ends are symmetrically arranged and synchronously driven, the telescopic push rods at the two ends are both fixedly provided with transmission mechanisms, and the transmission mechanisms at the two ends are symmetrically arranged and synchronously driven.

The telescopic push rods at the two ends are symmetrically arranged and synchronously driven, the two ends of the table frame are synchronously telescopic, the two sides of the roll-over stand are synchronously moved, the stability of the table frame is guaranteed, the transmission mechanisms at the two ends are symmetrically arranged and synchronously driven, enough overturning driving force is provided for the roll-over stand, the smooth completion of overturning action is guaranteed, the stress on the two sides of the roll-over stand is even, the two ends of the roll-over stand are simultaneously overturned, torsion and distortion are prevented from occurring on the roll-over stand, the design structure is reliable, and the load is high.

Preferably, the telescopic push rod comprises an outer pipe and an inner pipe which are sleeved, the outer pipe is fixed on the mounting side plate, a long through groove is formed in the inner side wall of the outer pipe, the transmission mechanism is fixedly connected with the side wall of the inner pipe and moves along with the expansion of the inner pipe, the transmission mechanism moves along with the expansion of the inner pipe through the structure, and the mounting position of the fixing frame and the length of the long through groove are determined according to the stroke of required expansion and movement.

Preferably, the transmission mechanism comprises a first screw rod which is driven by the driving piece to rotate, a first screw rod nut which is sleeved on the first screw rod and moves along with the rotation of the first screw rod, and a supporting connecting piece which is connected with the first screw rod nut and the front end of the roll-over stand, and the front end of the roll-over stand is hinged with the supporting connecting piece.

When the desktop needs to be turned upwards, the driving piece rotates forwards to drive the first screw rod to rotate, so that the first screw rod nut on the desktop moves forwards, the horizontal distance between the first screw rod nut and the front end of the roll-over stand is shortened, but the length of the hard support connecting piece connected between the first screw rod nut and the roll-over stand is unchanged, so that one end of the support connecting piece drives the front end of the roll-over stand to ascend, the vertical direction position change range of the rear end of the roll-over stand is smaller, and the roll-over stand rotates relative to the frame to adapt to the inclination of the roll-over stand, so that; when the turned desktop needs to be restored to the original position, the driving piece rotates reversely, and the operation process is opposite to the process. The turning and angle adjustment are realized through the matching of the screw rod and the first screw rod nut, the adjustment precision is high, the screw rod can be stopped at a required position, and the adjustment of any angle can be carried out within an allowable range.

Preferably, a guide post for guiding the first lead screw nut is arranged on one side of the first lead screw, and the first lead screw nut is sleeved on the guide post and slides relative to the guide post, so that the first lead screw nut is prevented from rotating along with the screw thread in the sliding process to cause the inclination of the support connecting piece and the turnover frame, and the stability of the table in the turnover process is influenced.

Preferably, the transmission mechanism further comprises a mounting frame, the side wall of the mounting frame is fixedly connected with the side wall of the inner pipe, the first lead screw is arranged in the mounting frame, the two ends of the first lead screw are provided with mounting blocks for mounting the first lead screw and the guide column, the mounting blocks ensure the stability of the first lead screw and the guide column, and further ensure the stability of the whole transmission mechanism.

Preferably, the mounting frame is provided with a supporting piece supported at the bottom side of the supporting connecting piece, the supporting piece supports the supporting connecting piece in an inclined upward direction, and the supporting connecting piece is prevented from being broken in the process that the turnover frame drives the tabletop to turn over and the tabletop and the screw rod nut are extruded.

Preferably, the telescopic push rods at the two ends comprise sleeved outer tubes and inner tubes, the telescopic push rods at the two ends are internally provided with a second lead screw and a second lead screw nut which is sleeved on the second lead screw and moves along with the rotation of the second lead screw, the second lead screw nut is connected with the inner tube and drives the inner tube to stretch, the telescopic push rods are internally provided with a reduction gearbox which drives the second lead screw to rotate, a motor is arranged in the middle of the table frame, output shafts at the two sides of the motor are respectively connected with the reduction gearboxes at the two ends and synchronously drive the reduction gearboxes at the two ends, and the single motor synchronously drives the telescopic push rods at the two ends to stretch through the.

Preferably, a lifting upright post is arranged below the table frame, the top end of the lifting upright post is fixedly connected with the bottom end of the table frame, the table frame is adjusted in height through the lifting upright post, and the adjusting function of the table frame is further increased.

Utility model adopts another technical scheme:

the table comprises a table top, wherein a table frame in any one of the technical schemes is arranged below the table top, the table top comprises a turnover table top arranged on a turnover frame, and the turnover table top is driven to move and/or turn over through the movement and/or the turnover of the turnover frame, so that the angle and/or the position of the table top are adjusted.

These features and advantages of the present invention will be disclosed in more detail in the following detailed description and the accompanying drawings.

[ description of the drawings ]

The utility model is further described with the following drawings:

fig. 1 is a schematic view of a three-dimensional structure of the table of the present invention.

Fig. 2 is a schematic view of a three-dimensional structure of the table frame of the present invention.

Fig. 3 is an exploded view of the table frame of the present invention.

Fig. 4 is a schematic view of a three-dimensional structure of the second table frame telescopic structure of the embodiment of the present invention after a side plate and an outer tube are removed.

Fig. 5 is a partial perspective view of the table frame roll-over stand of the present invention when it is not turned over.

Fig. 6 is a partial perspective view of the table frame roll-over stand of the present invention after being turned over.

Fig. 7 is a schematic view of the three-dimensional structure of the table frame roll-over stand of the present invention.

[ detailed description ] embodiments

The technical solutions of the embodiments of the present invention are explained and illustrated below with reference to the drawings of the embodiments of the present invention, but the embodiments described below are only preferred embodiments of the present invention, and not all embodiments. Based on the embodiments in the embodiment, those skilled in the art can obtain other embodiments without creative efforts, and all of them belong to the protection scope of the utility model.

In the following description, the terms such as "inner", "outer", "upper", "lower", "left", "right", etc., which indicate orientations or positional relationships, are used for convenience in describing embodiments and simplifying descriptions, but do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the utility model.

The first embodiment is as follows:

as shown in fig. 1 to 7, an automatic turnover table frame comprises a frame 002, wherein the frame 002 comprises a cross beam 1 and longitudinal beams 20 arranged at two ends of the cross beam 1, a turnover frame 4 is arranged on the frame 002, the turnover frame 4 is hinged to the longitudinal beams 20 through a four-bar hinge 9, the four-bar hinge 9 comprises a front swing arm 901 and a rear swing arm 902, the rear end of the turnover frame 4 is hinged to the lower end of the front swing arm 901 and the lower end of the rear swing arm 902 respectively, and the front end of the longitudinal beam 20 is hinged to the upper end of the front swing arm 901 and the upper end of the rear swing arm 902 respectively.

When the table frame in the scheme is used, the table frame is arranged below a tabletop 001, the tabletop 001 is driven to turn over by turning over the turning frame 4, the rear end of the turning frame 4 after turning over supports the bottom end of the tabletop 001, the rear end of the turning frame 4 is hinged with the front end of the longitudinal beam 20 through the four-bar hinge 9, the front swing arm 901, the rear swing arm 902 and the longitudinal beam 20 adopt the hinged mode, as shown in fig. 5, before turning over, the front swing arm 901 and the rear swing arm 902 are symmetrical relative to a vertical central shaft, the longitudinal beam 20 is fixed during turning over of the turning frame 4 driven by a driving force, therefore, the front swing arm 901 rotates by taking the upper end thereof as a rotation center, the rear swing arm 902 rotates by taking the upper end thereof as a rotation center, the initial positions of the front swing arm 901 and the rear swing arm 902 are different, the movement tracks of the lower ends of the front swing arm 901 and the rear swing arm 902 are different, as shown in fig. 6, an, thereby make roll-over stand 4 accomplish smooth upset, roll-over stand 4 rear end and longeron 20 front end adopt four connecting rod hinges 9, two linking arms in front and back, four pin joints, connection structure is more firm, is difficult to damage, and live time is long, and support stability is high, can not rock about from top to bottom, and rotates more in a flexible way, and upset limit angle is bigger, and the test shows that limit angle can reach 50. The rotation centers of the front swing arm 901 and the rear swing arm 902 are at the upper end and are hinged with the rear end of the roll-over stand 4 to be at the lower end, so that the lower end of the front swing arm 901 and the lower end of the rear swing arm 902 can drive the rear end of the roll-over stand 4 to move upwards while rotating, and accordingly the bottom end of the desktop 001 is driven to lift upwards, tests show that the bottom end of the desktop 001 can be lifted by 15mm, enough space is reserved for drawing and pulling the drawer at the bottom end of the desk frame, and the desk frame is more convenient to.

In order to prevent the roll-over stand 4 from continuing to turn over after turning over to the maximum turning angle and damaging the roll-over stand 4, as shown in fig. 6, the upper end of the rear swing arm 902 is provided with a turning limiting part 902a, when the roll-over stand 4 turns over to the maximum angle, the turning limiting part 902a is abutted to the front swing arm 901, the roll-over stand 4 is prevented from continuing to turn over after turning over to the maximum turning angle through limiting and damaging the roll-over stand 4, the stability of the roll-over stand 4 at the maximum turning angle is further improved, the limiting structure is characterized in that the swing arm is stressed, the limiting is more reliable, no additional limiting device is needed, the mounting structure is simplified, the time and the labor are saved.

In order to drive the roll-over stand 4 to turn over actively, the frame 002 is further provided with a roll-over power system 5, the roll-over power system 5 comprises a first driving member for providing power for the roll-over stand 4 and transmission mechanisms 502 which are fixed on the inner sides of the longitudinal beams 20 at the two ends and are symmetrically arranged, the transmission mechanisms 502 at the two ends drive synchronously, the front end of the roll-over stand 4 is hinged on the transmission mechanism 502, the roll-over stand 4 is driven to turn over through the transmission mechanism 502, the first driving member provides power for the roll-over stand 4 to turn over, the transmission mechanism 502 transmits the power to the front end of the roll-over stand 4 and drives the roll-over stand 4 to turn over, the transmission mechanisms 502 are symmetrically arranged on the inner sides of the longitudinal beams 20 at the two ends and drive synchronously, so as to provide enough roll-over driving force for the roll-over stand 4 to ensure that the roll-over action is completed smoothly, the design structure is reliable and the load is high.

In order to improve the turning accuracy, as shown in fig. 3, the transmission mechanism 502 includes an installation frame 502d fixedly connected to the longitudinal beam 20, a first lead screw 502a driven by the first driving member to rotate, a lead screw nut 502b sleeved on the first lead screw 502a and moving along with the rotation of the first lead screw 502a, and a support connecting member 502c connecting the lead screw nut 502b and the front end of the roll-over stand 4, the front end of the roll-over stand 4 is hinged to the support connecting member 502c, and the first lead screw 502a is disposed in the installation frame 502 d.

When the desktop 001 needs to be turned upwards, the first driving piece rotates forwards to drive the first screw rod 502a to rotate, so that the screw rod nut 502b on the first driving piece moves forwards, the horizontal distance between the first driving piece and the front end of the turning frame 4 is shortened, but the length of the hard supporting connecting piece 502c connected between the first driving piece and the turning frame is unchanged, so that one end of the supporting connecting piece 502c drives the front end of the turning frame 4 to ascend, the vertical direction position change range of the rear end of the turning frame 4 is smaller, and in order to adapt to the inclination of the turning frame 4, the turning frame 4 rotates relative to the frame 002, so that the desktop 001 and the frame 002 form a certain turning; when the desktop 001 after being turned over needs to be restored to the original position, the first driving piece is turned reversely, and the operation process is opposite to the process. The turning and angle adjustment are realized through the matching of the screw rod and the screw rod nut 502b, the adjustment precision is high, the device can be stopped at a required position immediately, and the adjustment of any angle can be carried out within an allowable range.

In order to prevent the support connecting piece 502c and the overturning frame 4 from inclining due to the rotation of the screw thread in the sliding process of the screw nut 502b, a guide post 502f for guiding the screw nut 502b is arranged on one side of the first screw 502a, and the screw nut 502b is sleeved on the guide post 502f and slides relative to the guide post 502f, so that the stability of the table in the overturning process is ensured.

The first driving member in this embodiment is the first motor 501, in order to ensure the stability of the first lead screw 502a and the guide post 502f and further ensure the stability of the whole transmission mechanism 502, the two ends of the first lead screw 502a are provided with the mounting blocks 502e for mounting the first lead screw 502a and the guide post 502f, the first motor 501 is connected with the first speed reducer, the first speed reducer is mounted on the mounting blocks 502e, in order to save space, the first motor 501 is arranged in parallel with the first lead screw 502a and mounted in the mounting frame 502d, the first speed reducer is internally provided with the first turbine, the turbine is internally provided with a through hole, a worm is inserted in the through hole, the output shaft of the first motor 501 and the turbine form a first-stage speed reduction system, the worm and the end of the lead screw form a second-stage speed reduction system, and.

In order to prevent the supporting and connecting member 502c from being broken off during the process of pressing the tabletop 001 and the lead screw nut 502b when the roll-over stand 4 rotates the tabletop 001, as shown in fig. 3, a supporting member 6 supported at the bottom side of the supporting and connecting member 502c is disposed on the mounting frame 502d, and the supporting member 6 supports the supporting and connecting member 502c in an inclined direction.

The front end of the roll-over stand 4 is a driving end, including being located the initiative upset 401 that the front end of the roll-over stand 4 is used for connecting the upset desktop 001, the rear end of the roll-over stand 4 is the driven end, including being located the driven upset 402 that the rear end of the roll-over stand 4 is used for connecting the upset desktop 001, in this embodiment, the front end of the upset desktop 001 is connected to the initiative upset 401, the rear end of the upset desktop 001 is connected to the driven upset 402, the upset desktop 401 drives the upset of upset desktop 001, the upset desktop 001 drives the upset of driven upset 402 again, can understand, as shown in fig. 2, fig. 3 and fig. 7, also can set up connecting plate 403 between initiative upset 401 and driven upset 402, and connect through connecting plate 403, thereby reach the purpose that initiative upset 401 drives the upset of driven upset 402.

In this embodiment, in order to better realize the hinge joint of the driving flip part 401 and the driven flip part 402, the end of the driving flip part 401 is provided with a connecting lug 401a, the connecting lug 401a is hinged with one end of the supporting connecting member 502c far away from the lead screw nut 502b, a hinge structure is adopted, so that the rotation of the driving flip part 401 in the lifting process is more flexible, the back of the driven flip part 402 is provided with a connecting side plate 402a, the connecting side plate 402a is hinged with the lower end of the front swing arm 901 and the lower end of the rear swing arm 902 respectively, for simplifying the structure and facilitating the rotation, the four-bar hinge 9 is specifically hinged in a manner that, as shown in fig. 4, the front end of the longitudinal beam 20 is provided with a first hinge hole 302a and a second hinge hole 302b, the longitudinal beam 20 is hinged with the upper end of the front swing arm 901 through the first hinge hole 302a, the longitudinal beam 20 is hinged with the upper end of the rear swing arm 902 through the second hinge hole 302b, as shown in fig., the connecting side plate 402a is hinged to the lower end of the front swing arm 901 through a third hinge hole 402aa, and the connecting side plate 402a is hinged to the lower end of the rear swing arm 902 through a fourth hinge hole 402 ab.

In order to make the upset of driven upset piece 402 more steady, as shown in fig. 4, the mounting groove is seted up to longeron 20 front end, two tip of driven upset piece 402 all are equipped with in-connection curb plate 402a1 and outer joint curb plate 402a2, in-connection curb plate 402a1 is articulated with the mounting groove inside wall through four-bar hinge 9, outer joint curb plate 402a2 is articulated with the mounting groove outside wall through four-bar hinge 9, adopt above-mentioned mounting structure, every tip of driven upset piece 402 is equipped with two sets of four-bar hinge 9, the support effect is better, stability is higher.

In order to further increase the adjusting function of the table frame 002, a lifting column (not shown in the figure) is arranged below the table frame 002, the top end of the lifting column is fixedly connected with the bottom end of the table frame 002, and the table frame 002 can be adjusted in height through the lifting column.

Example two:

the difference between this embodiment and the first embodiment is that a telescopic push rod 3 is further provided on the frame 002, at this time, the rear end of the roll-over stand 4, i.e. the driven roll-over member 402, is hinged with the telescopic end of the telescopic push rod 3, the transmission mechanism 502 in the roll-over power system 5 is fixed on the telescopic push rod 3 and moves along with the telescopic push rod 3, and the roll-over power system 5 in this embodiment is fixed on the telescopic push rod 3 and moves along with the telescopic push rod 3.

The table frame in this embodiment adopts above-mentioned structure, the regulation of table frame length is realized through flexible push rod 3, through roll-over stand 4 the upset of certain angle of production under drive mechanism 502's drive to drive the upset of fixing desktop 001 above that, through above-mentioned integrated design, can realize the dual regulation of length and angle on a table frame, the user can seek a standing posture or the most comfortable state of position of sitting according to self condition and demand, more does benefit to healthily, improves study and office efficiency. The telescopic push rod 3 is driven to stretch and retract, the turnover frame 4 is driven to turn over by two driving systems, one of the driving systems can be driven independently, so that the length adjustment or the angle adjustment can be realized independently, the synchronous driving can also be realized, the synchronous adjustment of the length and the angle can be realized, the changeable form is more, the functionality is stronger, and the application range is wide. Upset desktop 001 is fixed on roll-over stand 4, if only adjust table frame length, do not adjust under the condition of 4 angles of roll-over stand, upset driving system 5 is out of work, 4 front ends of roll-over stand, it is articulated with the driving medium of upset driving system 5 to initiatively overturn 401 promptly, driven upset 402 is articulated with telescopic push rod 3's flexible end, turn over turning force system 5 along with telescopic push rod 3's flexible and synchronous motion, therefore initiatively overturn 401 and rear end relative static, the distance keeps unchangeable between, can not cause roll-over stand 4 extrusion or buckle and warp, roll-over stand 4's stability has been guaranteed, thereby the stability of desktop 001 when connection firmness and the removal on the table frame has been guaranteed. Driven upset piece 402 when along with the desktop 001 upset, provides better rear side for the desktop 001 lower extreme after the upset and keeps off and downside supporting role, has guaranteed the stability of desktop 001 in the use. Initiative upset 401 and driven upset 402 all adopt articulated setting to in the upset process, when the upset changed along with desktop 001 emergence position and angle, the relative rotation was more nimble.

It can be understood that the telescopic pushing rod 3 can be a single telescopic pushing rod 3 arranged on the table frame, and the transmission mechanism 502 is also a set.

However, in order to better keep the balance of the table frame, provide enough overturning driving force for the active overturning part 401, and ensure that the overturning action is completed smoothly, the two ends of the table frame beam 1 are provided with the mounting side plates 2, the mounting side plates 2 at the two ends are both fixedly provided with the telescopic push rods 3, the telescopic push rods 3 at the moment are used as the longitudinal beams 20 of the table frame, the telescopic push rods 3 at the two ends are symmetrically arranged and synchronously driven, the telescopic push rods 3 at the two ends are both fixedly provided with the transmission mechanisms 502, and the transmission mechanisms 502 at the two ends are symmetrically arranged and synchronously driven. The two-end telescopic push rods 3 are symmetrically arranged and synchronously driven, the two ends of the table frame are synchronously telescopic, the two sides of the roll-over stand 4 are synchronously moved, the stability of the table frame is ensured, the two-end transmission mechanisms 502 are symmetrically arranged and synchronously driven, enough overturning driving force is provided for the roll-over stand 4, the smooth completion of overturning action is ensured, the stress on the two sides of the roll-over stand 4 is uniform, the two ends of the roll-over stand 4 are simultaneously overturned, torsion and distortion on the roll-over stand 4 are prevented, the design structure is reliable, and the load is high.

The telescopic push rod 3 comprises an outer pipe 301 and an inner pipe 302 which are sleeved, the outer pipe 301 is fixed on the installation side plate 2, a long through groove 301a is formed in the inner side wall of the outer pipe 301, the side wall of an installation rack 502d in the transmission mechanism 502 is fixedly connected with the side wall of the inner pipe 302 and moves along with the expansion and contraction of the inner pipe 302, the transmission mechanism 502 moves along with the expansion and contraction of the inner pipe 302 due to the structure, and the installation position of the fixed frame and the length of the long through groove 301a are determined according to the stroke required for expansion and movement.

In order to drive the telescopic push rods 3 more accurately and more stably, the telescopic push rods 3 at the two ends are internally provided with a second lead screw and a second lead screw nut 502b which is sleeved on the second lead screw and moves along with the rotation of the second lead screw, the second lead screw nut 502b is connected with the inner pipe 302 and drives the inner pipe 302 to stretch, as shown in fig. 4, the telescopic push rods 3 are internally provided with a second reduction gearbox 7 which drives the second lead screw to rotate, in order to synchronously stretch the two sides of the table frame, the middle of the table frame is provided with a second motor 8, output shafts at the two sides of the second motor 8 are respectively connected with the second reduction gearboxes 7 at the two ends, and the single motor synchronously drives the telescopic push rods 3 at the two ends to stretch through the second reduction gearbox.

It is understood that the driven turnover part 402 and the telescopic end of the telescopic pushing rod 3 can be hinged by other hinge means with fixed rotation center besides the four-bar hinge 9, such as pin hinge, etc., in case of no drawer under the table frame.

Example three:

as shown in fig. 1, a table includes a table top 001, a table frame 002 according to embodiment 1 or embodiment 2 is disposed under the table top 001, the table top 001 includes a turnover table top disposed on a turnover frame 4, and the turnover table top is moved and/or turned over by the movement and/or turning of the turnover frame 4, so as to adjust the angle and/or position of the turnover table top.

The above description is only for the embodiments of the present invention, but the scope of the present invention is not limited thereto, and those skilled in the art should understand that the present invention includes but is not limited to the description in the above embodiments and the accompanying drawings. Any modification which does not depart from the functional and structural principles of the invention is intended to be included within the scope of the claims.

Claims (10)

1. The utility model provides an automatic flexible table frame overturns, the table frame includes the crossbeam and establishes the installation curb plate at the crossbeam both ends, a serial communication port, still be equipped with telescopic push rod and roll-over stand on the table frame, the roll-over stand rear end is articulated with telescopic push rod's flexible end, telescopic push rod is last to be equipped with the upset driving system who removes along with telescopic push rod is flexible, turn over the driving force system and include the driving piece that provides power for the roll-over stand and fix the drive mechanism on telescopic push rod, the front end of roll-over stand is articulated on drive mechanism, drives the roll-over stand upset through drive mechanism.

2. The automatic turnover telescopic table frame as claimed in claim 1, wherein the side plates at both ends are fixed with telescopic push rods, the telescopic push rods at both ends are symmetrically arranged and synchronously driven, the telescopic push rods at both ends are fixed with transmission mechanisms, and the transmission mechanisms at both ends are symmetrically arranged and synchronously driven.

3. The automatic overturning telescopic table frame as claimed in claim 1 or 2, wherein the telescopic push rod comprises an outer pipe and an inner pipe which are sleeved, the outer pipe is fixed on the mounting side plate, a long through groove is formed in the inner side wall of the outer pipe, and the transmission mechanism is fixedly connected with the side wall of the inner pipe and moves along with the expansion of the inner pipe.

4. The automatic turnover telescopic table frame as claimed in claim 3, wherein the transmission mechanism comprises a first lead screw driven by the driving member to rotate, a first lead screw nut sleeved on the first lead screw and moving along with the rotation of the first lead screw, and a support connecting member connecting the first lead screw nut and the front end of the turnover frame, and the front end of the turnover frame is hinged with the support connecting member.

5. An automatic turnover telescopic table frame as claimed in claim 4, characterized in that one side of said first lead screw is provided with a guide post for guiding said first lead screw nut, said first lead screw nut being sleeved on said guide post and sliding with respect to said guide post.

6. The automatic overturning telescopic table frame as claimed in claim 5, wherein the transmission mechanism further comprises an installation frame, the side wall of the installation frame is fixedly connected with the side wall of the inner pipe, the first screw rod is arranged in the installation frame, and installation blocks for installing the first screw rod and the guide column are arranged at two ends of the first screw rod.

7. An automatic turnover telescopic table frame as claimed in claim 6, wherein said mounting frame is provided with supporting members supported on the bottom side of the supporting connection members.

8. The automatic turnover telescopic table frame as claimed in claim 2, wherein the telescopic push rods at both ends each comprise an outer tube and an inner tube which are sleeved, the telescopic push rods at both ends each have a second screw rod and a second screw rod nut which is sleeved on the second screw rod and moves with the rotation of the second screw rod, the second screw rod nut is connected with the inner tube and drives the inner tube to stretch and retract, the telescopic push rods each have a reduction box which drives the second screw rod to rotate, a motor is arranged in the middle of the table frame, and output shafts at both sides of the motor are respectively connected with the reduction boxes at both ends and synchronously drive the reduction boxes at both ends.

9. The automatic overturning and stretching table frame as claimed in claim 1, wherein a lifting upright is arranged under the table frame, and the top end of the lifting upright is fixedly connected with the bottom end of the table frame.

10. A table comprising a table top, wherein a table frame as claimed in any one of claims 1 to 9 is arranged under the table top, and the table top comprises a turnover table top arranged on a turnover frame.

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