CN110786632A - Automatic overturning table frame - Google Patents
Automatic overturning table frame Download PDFInfo
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- CN110786632A CN110786632A CN201911014981.4A CN201911014981A CN110786632A CN 110786632 A CN110786632 A CN 110786632A CN 201911014981 A CN201911014981 A CN 201911014981A CN 110786632 A CN110786632 A CN 110786632A
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- 230000008093 supporting effect Effects 0.000 claims abstract description 21
- 230000007306 turnover Effects 0.000 claims description 79
- 230000007246 mechanism Effects 0.000 claims description 31
- 230000005540 biological transmission Effects 0.000 claims description 29
- 238000000034 method Methods 0.000 abstract description 16
- 230000008569 process Effects 0.000 abstract description 14
- 238000009434 installation Methods 0.000 description 11
- 230000033001 locomotion Effects 0.000 description 6
- 230000009467 reduction Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 239000003638 chemical reducing agent Substances 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
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- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
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- 208000001491 myopia Diseases 0.000 description 1
- 230000004379 myopia Effects 0.000 description 1
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B13/00—Details of tables or desks
- A47B13/02—Underframes
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B13/00—Details of tables or desks
- A47B13/08—Table tops; Rims therefor
- A47B13/081—Movable, extending, sliding table tops
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B2200/00—General construction of tables or desks
- A47B2200/0035—Tables or desks with features relating to adjustability or folding
- A47B2200/004—Top adjustment
- A47B2200/0043—Inclination adjustable work top
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- Tables And Desks Characterized By Structural Shape (AREA)
Abstract
The invention discloses an automatic overturning table frame, which belongs to the field of tables and comprises a frame, wherein the frame comprises a cross beam and longitudinal beams arranged at two ends of the cross beam, the frame is provided with an overturning frame, the overturning frame is hinged with the longitudinal beams through a four-bar hinge, the four-bar hinge comprises a front swing arm and a rear swing arm, the rear end of the overturning frame is respectively hinged with the lower end of the front swing arm and the lower end of the rear swing arm, the front end of the longitudinal beam is respectively hinged with the upper end of the front swing arm and the upper end of the rear swing arm, the bottom end of a table top can be driven to be lifted upwards in the overturning process of the table frame, a connecting structure is firmer and more difficult to damage, the service life is long, the supporting stability is high, the table top and the bottom cannot shake up and.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of tables, in particular to an automatic overturning table frame.
[ background of the invention ]
The table is one of furniture with the widest application in life, and is often used for learning, working, dining, placing articles and the like, the table top of the traditional table is horizontally fixed, when the table is used for learning and working, the head and the waist need to be lowered and stood, the traditional table is easy to cause diseases such as vertebra, waist and back and the like and can cause myopia and the like after being used for a long time, aiming at the problems existing in the traditional table, a plurality of tables with adjustable angles appear on the market, auxiliary parts such as drawers for placing articles and the like are generally arranged below the table frame of the turnover table, in order to take and place articles, the drawing direction of the drawers is generally arranged in the front direction of the turnover table top, the end part of the turnover piece and the front end of the longitudinal beam which are used at present generally adopt the common hinge mode such as a pin shaft and the like, only one fixed rotating shaft is arranged, after the table top is turned, the bottom, and even cause damage.
[ summary of the invention ]
The invention aims to solve the technical problem of overcoming the defects in the prior art and designs a turnover table frame with the lower end of a table top capable of being lifted while being turned.
The technical scheme adopted by the invention is as follows:
the utility model provides an automatic upset table frame, includes the frame, the frame includes the crossbeam and establishes the longeron at the crossbeam both ends, be equipped with the roll-over stand on the frame, the roll-over stand passes through four-bar hinge with the longeron and articulates, four-bar hinge includes preceding swing arm and back swing arm, the roll-over stand rear end is articulated with preceding swing arm lower extreme and back swing arm lower extreme respectively, the front end of longeron is articulated with preceding swing arm upper end and back swing arm upper end respectively.
The invention has the following beneficial effects:
1. when the table frame is used, the table frame is arranged below a table top, the table top is driven to turn over through the turning of the turning frame, the bottom end of the table top is supported by the rear end of the turning frame after turning, the rear end of the turning frame is hinged with the front end of the longitudinal beam through the four-bar hinge, the front swing arm, the rear swing arm and the longitudinal beam are hinged in the above-mentioned manner, the longitudinal beam is fixed and does not move in the turning process under the driving force of the turning frame, the front swing arm rotates by taking the upper end of the front swing arm as a rotation center, the rear swing arm rotates by taking the upper end of the rear swing arm as the rotation center, the initial positions of the front swing arm and the rear swing arm are different, the rotation centers are different, the movement tracks of the lower end of the front swing arm and the lower end of the rear swing arm are different, an angle difference is formed after the rotation, the turning frame, the novel rotary table is not easy to damage, long in service time, high in supporting stability, free of vertical and horizontal shaking, flexible in rotation and larger in overturning limit angle.
2. The rotation centers of the front swing arm and the rear swing arm are arranged at the upper end and are hinged with the rear end of the roll-over stand to be arranged at the lower end, so that the lower end of the front swing arm and the lower end of the rear swing arm can drive the rear end of the roll-over stand to move upwards while rotating, the bottom end of the desktop is driven to lift upwards, enough space is reserved for drawing the drawer at the bottom end of the desk frame, and the desk frame is more convenient to use.
Preferably, the upper end of the rear swing arm is provided with a turnover limiting part, and when the turnover frame is turned to the maximum angle, the turnover limiting part is abutted against the front swing arm.
When the roll-over stand overturns to the maximum angle, the limit function is realized by depending on the motion interference between the front swing arm and the rear swing arm, the roll-over stand is prevented from being continuously overturned after the roll-over stand is overturned to the maximum angle through limitation, so that the damage to the roll-over stand is avoided, the stability of the roll-over stand at the maximum angle of overturning is further improved, the limit structure is characterized in that the swing arm is stressed, the limit is more reliable, a limit device is not required to be additionally installed, the installation structure is simplified, time and labor are saved, and materials are.
Preferably, the frame is further provided with a turning power system, the turning power system comprises a driving piece for providing power for the turning frame and transmission mechanisms which are fixed on the inner sides of the longitudinal beams at the two ends and symmetrically arranged, the transmission mechanisms at the two ends are driven synchronously, the front end of the turning frame is hinged to the transmission mechanisms, and the turning frame is driven to turn through the transmission mechanisms.
The driving piece in the turnover power system provides power for turnover of the turnover frame, the transmission mechanism transmits the power to the front end of the turnover frame and drives the turnover frame to turn over, the transmission mechanism is symmetrically arranged on the inner sides of longitudinal beams at two ends and is driven synchronously, enough turnover driving force is provided for the turnover frame, the turnover action is guaranteed to be finished smoothly, the stress at two ends is even, the two sides of the turnover frame are guaranteed to turn over simultaneously, torsion and distortion in the horizontal direction of the turnover frame are prevented, the design structure is reliable, and the load is high.
Preferably, the transmission mechanism comprises a screw rod which is driven by the driving piece to rotate, a screw rod nut which is sleeved on the screw rod and moves along with the rotation of the screw rod, and a supporting connecting piece which is used for connecting the screw rod nut and the front end of the turnover frame, and the front end of the turnover frame is hinged with the supporting connecting piece.
When the desktop needs to be turned upwards, the driving piece rotates forwards to drive the screw rod to rotate, so that the screw rod nut on the screw rod nut moves forwards, the horizontal distance between the screw rod nut and the front end of the turnover frame is shortened, but the length of the hard supporting connecting piece connected between the screw rod nut and the turnover frame is unchanged, so that one end of the supporting connecting piece drives the front end of the turnover frame to ascend, the vertical direction position change range of the rear end of the turnover frame is smaller, and in order to adapt to the inclination of the turnover frame, the turnover frame rotates relative to the frame, so that the desktop and the frame form a; 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 screw rod nut, 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.
Preferably, one side of the screw rod is provided with a guide post for guiding the screw rod nut, the screw rod nut is sleeved on the guide post and slides relative to the guide post, and the screw rod nut is prevented from rotating along with the screw thread in the sliding process to cause the inclination of the supporting connecting piece and the turnover frame, so that the stability of the table in the turnover process is influenced.
Preferably, the transmission mechanism further comprises an installation frame, the screw rod is arranged in the installation frame, installation blocks for installing the screw rod and the guide column are arranged at two ends of the screw rod, and a support piece supported at the bottom side of the support connecting piece is arranged on the installation frame.
The installation piece has guaranteed the stability of lead screw and guide post, and then has guaranteed whole drive mechanism's stability, and support piece plays the upwards supporting role to the support connecting piece to one side, prevents that the roll-over stand from driving the desktop upset in-process, supports the connecting piece and breaks at desktop and screw-nut extruded in-process.
As preferred, the roll-over stand is including being located the initiative upset piece that the roll-over stand front end is used for connecting the upset desktop and being located the driven upset piece that the roll-over stand rear end is used for connecting the upset desktop, the back of driven upset piece is equipped with the connection curb plate, it is articulated with preceding swing arm lower extreme and back swing arm lower extreme respectively to connect the curb plate, and the front end of upset desktop is connected to the initiative upset piece, and the rear end of upset desktop is connected to the driven upset piece, and the upset desktop drives the upset desktop upset of upset, and the upset desktop drives driven upset piece upset again.
Preferably, the end part of the active overturning part is provided with a connecting lug, the connecting lug is hinged with one end, far away from the screw rod nut, of the supporting connecting part, and a hinged structure is adopted, so that the active overturning part can rotate more flexibly in the ascending process.
Preferably, the front end of the longitudinal beam is provided with a first hinge hole and a second hinge hole, the longitudinal beam is hinged to the upper end of the front swing arm through the first hinge hole, the longitudinal beam is hinged to the upper end of the rear swing arm through the second hinge hole, a third hinge hole and a fourth hinge hole are formed in the connecting side plate, the connecting side plate is hinged to the lower end of the front swing arm through the third hinge hole, and the connecting side plate is hinged to the lower end of the rear swing arm through the fourth hinge hole.
Preferably, the mounting groove is formed in the front end of the longitudinal beam, an inner connecting side plate and an outer connecting side plate are arranged at two end portions of the driven overturning part, the inner connecting side plate is hinged to the inner side wall of the mounting groove through a four-bar hinge, and the outer connecting side plate is hinged to the outer side wall of the mounting groove through a four-bar hinge.
By adopting the mounting structure, each end part of the driven overturning part is provided with two sets of four-bar hinges, so that the driven overturning part can overturn more stably, the supporting effect is better, and the stability is higher.
These features and advantages of the invention will be disclosed in more detail in the following detailed description and the accompanying drawings.
[ description of the drawings ]
The invention is further described with reference to the accompanying drawings in which:
fig. 1 is a schematic perspective view of a table according to the present invention.
Fig. 2 is a schematic perspective view 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 perspective view of a second table frame telescopic structure according to an embodiment of the present invention, with a side plate and an outer tube removed.
Fig. 5 is a partial perspective view of the table stand 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 a three-dimensional structure of the table frame roll-over stand of the invention.
[ detailed description ] embodiments
The technical solutions of the embodiments of the invention are explained and illustrated below with reference to the drawings of the embodiments of the invention, but the embodiments described below are only preferred embodiments of the invention, and not all embodiments. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative effort belong to the protection scope of the invention.
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 invention.
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.
While the foregoing is directed to embodiments of the present invention, the scope of the invention should not be limited thereby, and it will be apparent to those skilled in the art that the invention includes, but is not limited to, those illustrated in the drawings and described in the foregoing detailed description. 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 upset table frame, includes the frame, the frame includes the crossbeam and establishes the longeron at the crossbeam both ends, its characterized in that, be equipped with the roll-over stand on the frame, the roll-over stand passes through four-bar hinge with the longeron and articulates, four-bar hinge includes preceding swing arm and back swing arm, the rear end of roll-over stand is articulated with preceding swing arm lower extreme and back swing arm lower extreme respectively, the front end of longeron is articulated with preceding swing arm upper end and back swing arm upper end respectively.
2. The automatic turnover table frame as claimed in claim 1, wherein a turnover limiting portion is arranged at the upper end of the rear swing arm, and the turnover limiting portion abuts against the front swing arm when the turnover frame is turned to a maximum angle.
3. The automatic turnover table frame as claimed in claim 1, wherein the frame is further provided with a turnover power system, the turnover power system comprises a driving member for providing power for the turnover frame and transmission mechanisms which are symmetrically arranged and fixed on the inner sides of the longitudinal beams at the two ends, the transmission mechanisms at the two ends are driven synchronously, and the front end of the turnover frame is hinged to the transmission mechanism and drives the turnover frame to turn over through the transmission mechanism.
4. An automatic turnover table frame as claimed in claim 3, wherein said transmission mechanism includes a screw rod driven by the driving member to rotate, a screw nut sleeved on the screw rod and moving with the screw rod, and a supporting connection member connecting the screw nut and the front end of the turnover frame, and the front end of the turnover frame is hinged to the supporting connection member.
5. The automatic flipping table rack of claim 4, wherein a guide post for guiding a lead screw nut is arranged on one side of the lead screw, and the lead screw nut is sleeved on the guide post and slides relative to the guide post.
6. The automatic turn-over table frame as claimed in claim 5, wherein the transmission mechanism further comprises a mounting frame, the screw rod is arranged in the mounting frame, mounting blocks for mounting the screw rod and the guide post are arranged at two ends of the screw rod, and a support member supported at the bottom side of the support connecting member is arranged on the mounting frame.
7. The automatic turnover table frame as claimed in claim 1, wherein the turnover frame comprises a driving turnover member located at the front end of the turnover frame and used for connecting a turnover table top, and a driven turnover member located at the rear end of the turnover frame and used for connecting the turnover table top, wherein a connecting side plate is arranged on the back surface of the driven turnover member, and the connecting side plate is hinged to the lower end of the front swing arm and the lower end of the rear swing arm respectively.
8. The automatic turnover table frame as claimed in claim 7, wherein the end of the active turnover member is provided with a connection lug, and the connection lug is hinged to one end of the support connection member far away from the screw nut.
9. The automatic turnover table frame as claimed in claim 7, wherein the longitudinal beam is provided at a front end thereof with a first hinge hole and a second hinge hole, the longitudinal beam is hinged to an upper end of the front swing arm through the first hinge hole, the longitudinal beam is hinged to an upper end of the rear swing arm through the second hinge hole, the connecting side plate is provided with a third hinge hole and a fourth hinge hole, the connecting side plate is hinged to a lower end of the front swing arm through the third hinge hole, and the connecting side plate is hinged to a lower end of the rear swing arm through the fourth hinge hole.
10. The automatic turnover table frame as claimed in any one of claims 7 to 9, wherein the longitudinal beam is provided with a mounting groove at a front end thereof, the driven turnover member is provided with an inner connecting side plate and an outer connecting side plate at both end portions thereof, the inner connecting side plate is hinged to an inner side wall of the mounting groove by a four-bar hinge, and the outer connecting side plate is hinged to an outer side wall of the mounting groove by a four-bar hinge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911014981.4A CN110786632A (en) | 2019-10-24 | 2019-10-24 | Automatic overturning table frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911014981.4A CN110786632A (en) | 2019-10-24 | 2019-10-24 | Automatic overturning table frame |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110786632A true CN110786632A (en) | 2020-02-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911014981.4A Pending CN110786632A (en) | 2019-10-24 | 2019-10-24 | Automatic overturning table frame |
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| Country | Link |
|---|---|
| CN (1) | CN110786632A (en) |
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