CN209073660U - A kind of changeable table - Google Patents

Abstract

The utility model discloses a kind of changeable tables, including the support baseboard being fixed in a support construction and the table top being arranged on support baseboard, rotary extension desktop is equipped with there are gap between table top and support baseboard and in gap, the rotary extension desktop is rotatablely connected with table top, rotary extension desktop and support baseboard.The utility model is compact-sized, by female fan of turntable structure and splitlevel and male fan can quick-expansion deform, to achieve the effect that storage and increase desktop area.

Description

A kind of changeable table

Technical field

The utility model belongs to technical field of furniture, and in particular to a kind of to can be rotated Deforming table.

Background technique

Furniture is deformed, as its name suggests, the furniture that can be deformed refers to that a furniture can be according to reality in appearance, function Demand and change.It has overturned the single-function of antique traditional furniture, by changing inside of furniture structure, makes the same furniture Can flexibly it change between multiple functions, i.e. a furniture is provided simultaneously with two or more kinds of household functions, realizes furniture Function diversification.Furniture is deformed, maximum feature is to create space, and the same furniture can create multiple and different by deformation The space of function.Specifically, the connection methods such as to be exactly furniture design teacher buckled using connecting rod, machine, pulley increase the structure of furniture Variation makes furniture functions diversification using the modes such as folding, hiding, lifting, shared, displacement, as long as user passes through simply The operations such as passage, overturning, folding, rotation can complete the conversion between furniture different function.A kind of design in this way, makes Furniture produces the demand of a variety of environmental changes in single space, allows a space to serve as multiple spaces and uses, saves space-efficient New space has been createed simultaneously.

Wherein commonly deformation furniture includes folding bed, folding table, Telescopic table, Combined table-chair or divan, In, Telescopic table is generally dining table, mainly dilatation is realized by having the function of the mechanism of Telescopic, thus Two-stage or multistage adjusting are able to carry out to achieve the effect that adjust size of desktop or increase the desktop number of plies.

Existing Telescopic table mainly includes plug-type two kinds telescopic with rotation, such as application No. is: A kind of Novel extensible type round table driven by mechanical mechanism of CN201210168505.X, this part patent is by being divided into three for desktop Layer, and a kind of column type linkage mechanism is devised, it is its synchronous expansion, to reach telescopic effect.But this three-dimensional column linkage Mechanism structure is complex, and needs biggish vertical direction spatial, higher for space waste, and the rotation of its connecting rod initial state Angle is smaller, so that its resistance for rotating desktop is larger, biggish rotatory force is not only needed to be difficult to operate so as to cause it, but also Its structure is easily damaged, and causes its higher problem of desktop later maintenance cost.

Also for example application No. is CN201210187865.4 can automatically changing size desk, equally use connecting rod with Sliding-rail sliding structure, and being driven by the motor driver that is arranged on bottom plate, but the structure also need it is biggish Vertical direction spatial keeps its space utilization rate lower, and structure is complicated causes the maintenance cost in later period higher, while being driven using motor It is dynamic to keep its manufacturing cost higher.

The structure of connecting rod and sliding rail is mostly used in the prior art, and each sliding block is enabled by driven by rotary disc connecting rod Pushing out desktop makes its protruding formation table board structure, but usually structure is complicated for its driving mechanism, and is easy to occupy perpendicular To space, so that desktop thickness is larger；And existing flexible desktop is splitlevel structure, but rotates flexible structure often Cannot preferably be unfolded, be merely able to it is the partially unfolded achieve the effect that enlarged-area, and a complete planar structure can not be formed.

Utility model content

In order to solve, structure is complicated later maintenance cost of the existing technology is higher and splitlevel desktop can not spell completely The problem of connecing, the utility model aim, which is to provide a kind of changeable table, to reduce space waste simultaneously using space as far as possible It enables to two layers of fan plate that can be fully deployed by liftable structure and is spliced to form a desktop.

The technology employed by the present utility model is a kind of changeable table, including the support being fixed in a support construction Bottom plate and the table top being arranged on support baseboard are equipped with rotation there are gap between table top and support baseboard and in gap and stretch Contracting desktop, the rotary extension desktop are rotatablely connected with table top, rotary extension desktop and support baseboard.

It further, further include the table circle being flexibly connected with support baseboard, the table circle can have mercy on support baseboard rotation and spiral shell Rotation moves downward the gap exposed between table top and support baseboard to keep rotary extension desktop protruding.

Further, the table circle is threadedly coupled with support baseboard.

Further, at least three B pulleys are provided on the table circle inner ring, outside the B pulley and support baseboard top surface Contact slide is enclosed, and is equipped with gliding groove corresponding with B pulley on support baseboard outer ring, and is equipped in downslide groove bottom and is used to hinder Gear B pulley continues the baffle for dropping out gliding groove downwards；The gliding groove side is equipped with inclined-plane, and in the downslide trough rim close to inclined-plane It is used to padded wedge block, the wedge block thickness and downslide groove depth and no more than between table top and support baseboard along being equipped with Away from.

Further, the gliding groove is additionally provided with A block far from wedge block side, sets in wedge block far from gliding groove side There is B block；It is equipped with bolt on table circle, pulls bolt when B pulley, which is ramped up, moves on wedge block and resist B block Table circle be rotated can not to realize positioning.

Further, the rotary extension desktop includes the turntable that is arranged on support baseboard and fan board group, described in rotation Turntable to be arranged at least two crank groups on turntable and pushes out the fan board group formation one that crank group end is arranged in Annular tabletop；The crank group includes the upper crank for being hinged on one side of turntable and the lower crank for being hinged on another side, institute Stating fan board group includes that hinged male fan and the mother hinged with lower crank fan with upper crank；Board group is fanned when expansion is pushed edge by crank group Straight line slides in and out, and fan board group is unfolded outward from two layers of stacked state and female fan decline is parallel with male fan and is finally spliced into one Annular tabletop.

Further, the sliding block that the support baseboard is equipped with linear track and slides on linear track, the public fan It is each attached on corresponding sliding block ascender line track and slides with mother's fan；It is additionally provided with fluctuating orbit in mother's fan bottom, in lift rail Road outboard end is equipped with inclined-plane, and female fan bottom is equipped with the A pulley slided on fluctuating orbit, and mother's fan is along the oblique of fluctuating orbit Movement is flushed with public affairs fan downwards；Female fan bottom is equipped with the lifting fixed plate being fixed on corresponding sliding block, and the lifting is solid Fixed board is equipped at least two lifting shafts and female fan is socketed on lifting shaft and pumps；The public fan bottom Equipped with the parallel dead plate being fixed on corresponding sliding block.

Further, the turntable bottom passes through the center the A change being equipped with and support baseboard is rotatablely connected；In turntable and A The A disc that diameter is less than the change of the center A is additionally provided between the change of center, the A disc is fixed in the change of center, pads by A The annulus formed between disk and the change of the center A accommodates the lower crank of withdrawal.

Further, it is equipped with B disc far from the center A change side in the turntable, is turned by A disc and the clamping of B disc Disk；It is additionally provided with the change of the center B on B disc, table top is equipped in the change of the center B；The table top is padded by the change of the center B and B Disk rotation connection, the B disc are fixedly connected with A disc；It is equipped with linkage mechanism on support baseboard, is made by linkage mechanism Table top and turntable, which are sequentially connected and pass through Table top able to be rotated, to be made to fan board group expansion or withdraw.

Further, the linkage mechanism includes the central shaft for being fixed on support baseboard center, centrally disposed shaft On linkage unit and the push-pull device at fixed that is connected with linkage unit, the linkage unit include in being successively socketed in from top to bottom Set bar pallet, pressure spring cover board, central axis pressure spring on mandrels stem, the set bar pallet are equipped with linkage pin, pressure spring lid Plate and set bar pallet slide up and down in central shaft with upper and lower stretch of central axis pressure spring；The center A change and branch It is additionally provided with washer between support bottom plate and increases gap to guarantee that linkage mechanism being capable of stable operation.

The utility model has the following beneficial effects:

(1) the utility model is compact-sized, being capable of quick-expansion change by the female fan and male fan of turntable structure and splitlevel Shape, to achieve the effect that storage and increase desktop area；

(2) the utility model passes through the fluctuating orbit being equipped with and lifting fixed plate realizes the lifting effect of female fan, and can It can be realized as the servo-actuated lifting of female fan when rotating turntable, it is ingenious in design convenient for operation, and high stability；

(3) the utility model passes through the center the A change being equipped with and the change of the center B realizes that table top and the opposite of support baseboard turn It is dynamic, while fixation can either be facilitated by fixed disk and the structure of change, while will not influence its rotating effect again；

(4) the utility model, which passes through the B disc being equipped with and A disc, can avoid lower crank, when upper crank and lower crank It can be turned in the gap between two discs and two center changes when inwardly rotation is shunk；

(5) all fan board groups can be unfolded in the utility model by way of direct Table top able to be rotated, so that operation It is more convenient, while so that remaining equipment is connected transmission by mechanical connecting structure design, it is operated to reach easy Effect.

Detailed description of the invention

Outline structural diagram when Fig. 1 is the contraction of the utility model；

Outline structural diagram when Fig. 2 is the expansion of the utility model；

Fig. 3 is the split type configuration schematic diagram in part of the utility model；

Fig. 4 is the support baseboard of the utility model and the configuration schematic diagram of parts thereof；

Fig. 5 is the side perspective structural schematic diagram of the utility model；

Fig. 6 is female fan and the male annular tabletop structural schematic diagram fanned and be spliced to form of the utility model；

Fig. 7 is the perspective structure perspective diagram when female fan splices with male fan of the utility model；

Perspective structure perspective diagram when Fig. 8 is the contraction of the utility model；

Fig. 9 is perspective structure perspective diagram when female fan of the utility model falls just below parallel with male fan；

Figure 10 is the structural schematic diagram of the bottom surface of table top of the utility model；

Figure 11 is the axis geodesic structure schematic diagram of the bottom surface of table top of the utility model upward；

Figure 12 is the turntable of the utility model and the axis geodesic structure schematic diagram of crank group；

Figure 13 is the turntable of the utility model and the overlooking structure diagram of crank group, wherein it is hinged to have marked out upper crank Point, respectively with the optimum angle of circle center line connecting, is 15 ° with lower crank hinge joint；

Figure 14 is the structural schematic diagram of female fan of the utility model and the linear bearing of bottom；

Figure 15 is the lifting fixed plate structure schematic diagram of the utility model；

Figure 16 is the parallel dead plate structural schematic diagram of the utility model；

Figure 17 is the male fan and female fan connecting end surface structure schematic diagram of the utility model；

Figure 18 is the side structure schematic view of the gliding groove of the utility model；

Lateral parts structural schematic diagram when Figure 19 is female fan lifting of the utility model；

Figure 20 is the table top overlooking structure diagram of the utility model；

Figure 21 is the support baseboard upper surface axis side structure schematic diagram with linkage mechanism of the utility model；

Figure 22 is that the support baseboard bottom surface of the utility model is equipped with the structural schematic diagram of push-and-pull fixture；

Figure 23 is the structural schematic diagram of the center the A change of the utility model；

Figure 24 is the structural schematic diagram of the A disc of the utility model；

Figure 25 is the utility model support baseboard axis side structure schematic diagram；

Figure 26 is the support baseboard overlooking structure diagram with linkage mechanism of the utility model；

Figure 27 is the axis side structure schematic diagram of the utility model set bar pallet；

Figure 28 is the structural schematic diagram of the utility model linkage unit；

Figure 29 is the axis side structure schematic diagram of the utility model steel wire pressing plate；

Figure 30 is the structural schematic diagram of the utility model steel wire flexible deep gouge and steel wire bar deep gouge.

In figure: 1- turntable, the upper crank of 2-, 3- lower crank, 4- public affairs fan, mother's 5- fan, 6- linear track, 7- sliding block, 8- lifting Fixed plate, 9- lifting shaft, 10- pull rod, 11- pull down spring, 12- fluctuating orbit, the change of the center 13-A, 14-A disc, 15- tenon Slot, 16- tenon item, 17- magnet slot, 18-B disc, the change of the center 19-B, 20- table top, 21- table circle, 22-B pulley, 23- glide Slot, 24- baffle, 25- wedge block, 26-B block, 27- parallel dead plate, 28- support baseboard, 29-A block, 30-A pulley；31- Central shaft, 32- set bar pallet, 33- pressure spring cover board, 34- central axis pressure spring, 35- linkage pin, 36- retaining rail, 37- are sliding Dynamic rail, 38- connecting rod, 39- push and pull fixture, the left steel wire of 40-, the right steel wire of 41-, 42- steel wire pressure bar, 43- intercommunicating pore, 44- steel wire Flexible deep gouge, 45- steel wire bar deep gouge, 46- steel wire cover board, 47- steel wire through-hole, 48- stretch through-hole.

Specific embodiment

With reference to the accompanying drawing and specific embodiment does further explaination to the utility model.

Embodiment 1:

The present embodiment is a kind of changeable table, as depicted in figs. 1 and 2, including the support baseboard being fixed in a support construction 28 and the table top 20 that is arranged on support baseboard 28, it is equipped with there are gap between table top 20 and support baseboard 28 and in gap Rotary extension desktop, the rotary extension desktop are rotatablely connected with table top 20, rotary extension desktop and support baseboard 28.

Embodiment 2:

The present embodiment is that restriction is advanced optimized on the basis of above-described embodiment 1, such as Fig. 3, Figure 18 and Figure 20 institute Show, further include the table circle 21 being flexibly connected with support baseboard 28, the table circle 21 can have mercy on the rotation of support baseboard 28 and downward spiral Movement exposes the gap between table top 20 and support baseboard 28 to keep rotary extension desktop protruding.

At least three B pulleys 22 are provided on 21 inner ring of table circle, the B pulley 22 is contacted with 28 top surface outer ring of support baseboard Sliding, and gliding groove 23 corresponding with B pulley 22 is equipped on 28 outer ring of support baseboard, and be equipped with and be used in 23 bottom surface of gliding groove B pulley 22 is stopped to continue the baffle 24 for dropping out gliding groove 23 downwards；23 side of gliding groove is equipped with inclined-plane, and close to inclined-plane 23 edge of gliding groove be equipped with and be used to padded wedge block 25,25 thickness of wedge block and 23 depth of gliding groove and be not more than The spacing of table top 20 and support baseboard 28.The gliding groove 23 is additionally provided with A block 29 far from 25 side of wedge block, in wedge block 25 B block 26 is equipped with far from 23 side of gliding groove；It is equipped with bolt on table circle 21, moves to wedge shape when B pulley 22 is ramped up Bolt is pulled to rotate table circle 21 can not to realize positioning on block 25 and when resisting B block 26.Rotary extension desktop includes setting Turntable 1 and fan board group on support baseboard 28 are set, the turntable 1 is rotated and makes that at least two cranks on the turntable 1 are arranged Group pushes out fan board group one annular tabletop of formation that crank group end is arranged in.

As shown in Figures 12 and 13, crank group includes being hinged on the upper crank 2 of 1 one sides of turntable and being hinged on another side Lower crank 3, the fan board group includes and upper crank 2 is hinged male fan 4 and fan 5 with hinged female of lower crank 3；Plate is fanned when expansion Group is pushed by crank group and is slid in and out along straight line, and fan board group is unfolded outward from two layers of stacked state and 5 decline of female fan and male fan 4 are flat Row is simultaneously finally spliced into an annular tabletop.

As shown in figs. 25 and 26, the sliding block 7 that support baseboard 28 is equipped with linear track 6 and slides on linear track 6, institute It states male fan 4 and female fan 5 is each attached on corresponding 7 ascender line track 6 of sliding block and slides；Lift rail is additionally provided in 5 bottoms of mother's fan Road 12 is equipped with inclined-plane in 12 outboard end of fluctuating orbit, and 5 bottoms of female fan are equipped with the A pulley slided on fluctuating orbit 12 30, mother's fan 5 is moved downward along the inclined-plane of fluctuating orbit 12 and is flushed with male fan 4.

As shown in Figure 14, Figure 15, Figure 16 and Figure 19,5 bottoms of mother's fan are equipped with the lifting fixed plate being fixed on corresponding sliding block 7 8, the lifting fixed plate 8 is equipped at least two lifting shafts 9 and female fan 5 is socketed on lifting shaft 9 and carries out up and down reciprocatingly Movement；4 bottoms of the public fan are equipped with the parallel dead plate 27 being fixed on corresponding sliding block 7.1 bottom of turntable passes through in the A being equipped with Heart change 13 and support baseboard 28 are rotatablely connected；Diameter is additionally provided between turntable 1 and the center A change 13 less than A center change 13 A disc 14, the A disc 14 are fixed in the change of center, pass through the ring formed between A disc 14 and the center A change 13 Shape space accommodates the lower crank 3 of withdrawal.

As shown in Figure 23, Figure 24 and Figure 17, it is equipped with B disc 18 far from 13 side of the center A change in the turntable 1, passes through A Disc 14 and B disc 18 clamp turntable 1；It is additionally provided with the center B change 19 on B disc 18, table top is equipped in the center B change 19 20；The table top 20 is rotatablely connected by the center B change 19 and B disc 18, and the B disc 18 is fixedly connected with A disc 14；? Support baseboard 28 is equipped with linkage mechanism, by linkage mechanism table top 20 and turntable 1 is sequentially connected and passes through Table top able to be rotated 20 make to fan board group expansion or withdraw.Linkage mechanism is.Washer increasing is additionally provided between the center A change 13 and support baseboard 28 Add gap to guarantee that linkage mechanism being capable of stable operation.

Embodiment 3:

The present embodiment is a kind of changeable table of multilayered structure, including chassis and the desk body that is arranged on chassis, wherein desk body Including main four structures: support baseboard 28, rotary extension desktop, table top 20 and table circle 21.Wherein, support baseboard 28 is fixed Supporting member on chassis, as bottommost.

As shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8 and Fig. 9, rotary extension desktop, including turntable 1,1 one side of turntable The central angles such as the rich center of circle set that there are four upper cranks 2, and hinged there are four lower songs for equally corresponding upper crank 2 on 1 another side of turntable Handle 3.Equal central angles are equipped with eight linear tracks 6 on support baseboard 28, and slidable sliding block 7 is equipped on linear track 6, Upper 2 outboard end of crank is hinged with parallel dead plate 27.The parallel dead plate 27 is a kind of plate-shaped piece of metal, is above offered more A hole is used to fix, and the parallel dead plate 27 is bolted on corresponding sliding block 7.It is leaned in parallel dead plate 27 Nearly upper 2 end of crank is equipped with the pull rod 10 perpendicular to parallel dead plate 27, and upper crank 2 and 10 top of pull rod are hinged.

3 outboard end of lower crank is hinged with lifting fixed plate 8, and the lifting fixed plate 8 is similarly a kind of metal plate Shape structure, and side is equipped with two lifting shafts 9 perpendicular to lifting fixed plate 8 on it, and respectively sets in lifting 8 two sides of fixed plate There is the ear handle for having strip-shaped hole.Lifting fixed plate 8 is bolted on remaining four corresponding sliding blocks 7, and is gone up and down Fixed plate 8 and the interval of parallel dead plate 27 are arranged.The lower crank 3 is directly hinged with lifting 8 end of fixed plate, so that lifting is solid Fixed board 8 and parallel dead plate 27 are in same level.

It is equipped with female fan 5 in lifting fixed plate 8, public fan 4 is equipped on parallel dead plate 27.Wherein female fan 5 and 4 rulers of male fan It is very little identical, open up on mother's fan 5 there are four through-hole, two of them from the back side inserted with linear bearing, by the way that linear axis will be had The through-hole held, which is aligned with lifting shaft 9 and lifting shaft 9 is enable to pass through linear bearing, makes female fan 5 move up and down along lifting shaft 9.And Drop-down spring 11 is connected on the ear handle of lifting 8 two sides of fixed plate, the spring 11 that pulls down is from the through-hole being arranged on female fan 5 It is pierced by and is fixed in end equipped with fixing piece upwards.Public fan 4 is equipped on parallel dead plate 27, the public fan 4 passes through spiral shell Bolt is fixed on parallel dead plate 27.It is additionally provided with magnet slot 17 in 5 bottoms of mother's fan simultaneously, magnet is equipped in magnet slot 17.And Lifting fixed plate 8 is metal material, and downward pulling force is equally provided by magnet.

Wherein, upper crank 2 includes two parallel portions and a curved interconnecting piece for being used to connect with lower crank 3.Upper song Handle 2 and the hinged parallel portion of turntable 1, which are higher than, fans 4 hinged parallel portions with public affairs, and the parallel portion hinged with turntable 1 of lower crank 3 is lower than 5 hinged parallel portions are fanned with mother, the parallel portion of inside is arcuate shape, and the parallel portion in outside is linear structure, but on The radian in the inside parallel portion of crank 2 is less than 3 inside parallel portion of lower crank.The upper crank 2 and lower crank 3 passes through certain arc The design of shape structure and the structure design of upper and lower two parallel portion generate obstruction when effectively can avoid mutually rotating.And upper crank 2 Difference in height between 3 outboard end of lower crank is equal to 10 height of pull rod being arranged on parallel dead plate 27.

The linear track 6 of corresponding lifting 8 lower part of fixed plate is equipped with fluctuating orbit 12, the lift rail on support baseboard 28 Road 12 sets there are two and is symmetricly set on 6 two sides of linear track, sets that there are two A pulley 30, each A pulleys 30 in 5 bottoms of mother's fan It is corresponding with fluctuating orbit 12 and at an upper portion thereof along fluctuating orbit 12 slide.Fluctuating orbit 12 how close to outboard end be equipped with inclined-plane.

When entire turntable 1 rotates, upper crank 2 drives male fan 4 inwardly or outwardly to move with mother's fan 5 with lower crank 3, to outward transport When dynamic, public affairs fan 4 moves along a straight line, and remains and move in outward direction.And female fan 5 is outside with the promotion of lower crank 3 Side movement.Because when keeping receiving state, mother's fan 5 be stacked on two it is adjacent it is male fan 4 junction tops, when pushing out mother When fanning 5, mother's fan 5 will do it three sections of motion processes.The fluctuating orbit 12 of first segment, Xiang Pingzhi carries out parallel lines movement outward； Second segment, when A pulley 30 moves on inclined-plane, entire female fan 5 receives the pulling force of drop-down spring 11 and magnet down along inclined-plane Movement, and finally move to and fanned at 4 on the same plane with public.At this time between male fan 4 and female fan 5 there is also certain interval, But female fan 5 has been in position of maximum extension at this time, that is to say, that the center of circle of two hinge joints and turntable 1 of lower crank 3 at this time Place is on the same line；Third section, lower crank 3 inwardly retracts female fan 5 at this time, and public fan 4 continues to move out, until public affairs fan 4 Formation one complete cyclic annular table board structure is bonded with mother's fan 5.And the process inwardly moved is to rotate backward turntable 1, and mistake Journey with above-mentioned to move out process opposite.

Wherein, in order to provide stability, female fan 5 is equipped with tongue-and-groove 15 with 4 contact surfaces of adjacent male fan, it is public fan 4 and 5 contact surfaces of adjacent female fan are equipped with the tenon item 16 for cooperating clamping limit with tongue-and-groove 15.When mother's fan 5 contacts fitting with male fan 4, tenon Item 16 and the clamping of tongue-and-groove 15 limit are to provide the support force on vertical direction to entire annular desktop.

The A disc 14 and B disc 18 for clamping turntable 1, the A disc 14 and B disc 18 are additionally provided in 1 two sides of turntable Structure size is identical, and is equipped with the center A change 13 in 28 center of support baseboard, and the A disc 14 is fixed on the change of the center A On 13, the washer for being spaced is additionally provided between 13 bottom of the center A change and support baseboard 28.

As shown in Figure 10 and Figure 11, the table top 20 is the circular plate structure of size identical as support baseboard 28, bottom Face sets that there are six fixed blind holes by the central angles such as entad, and there are six the surfaces of blind hole to be equipped with metal shielding setting, For providing structural strength.The center B change 19, the centre of the center B change 19 are additionally provided in 20 bottom center position of table top Hole radius is greater than the radius of the circular annular form structure of six fixed blind hole compositions, so that all fixed blind holes can be exposed.

Wherein, the center A change 13 and the center B change 19 are identical structure, equally have change and fixed dish structure, but Because it is different that position is arranged, and plays the role of difference, therefore referred to using different scientific and technical terminologies.The wherein center B change 19 is are inverted setting, and change is connect with table top 20, and fixed disk tips upside down on B disc 18, and with being first fixed on the change of the center B It is fixed with the center the A change 13 of bottom in four studs insertion B disc 18 on 19.B disc 18 and A disc 14 therein is Identical structure, primarily to upper lower crank 3 is avoided, when upper crank 2 and lower crank 3 can turn to when inwardly rotation is shunk In gap between two discs and two center changes.When fixed, be pierced by from the center B change 19 by four studs and according to It is secondary pass through B disc 18, turntable 1, A disc 14 and the center A change 13, and by the center A change 13 hold-doun nut consolidated Fixed connection.So that two center changes, two discs and turntable 1 form a fixed connection.It is worth noting that the center A change 13 It is to be fixed by fixed disk, and screw rod same connect with two fixed disks with the center B change 19, thus the change made It can rotate.

The table circle 21 is socketed on the outside of support baseboard 28 and rotary extension desktop, and table circle 21 can have mercy on 28 turns of support baseboard The movement of dynamic and downward spiral exposes the gap between table top 20 and support baseboard 28 to keep rotary extension desktop protruding.Table It encloses on 21 inner rings and is provided at least three B pulleys 22, the B pulley 22 and 28 top surface outer ring contact slide of support baseboard, and 28 outer ring of support baseboard is equipped with gliding groove 23 corresponding with B pulley 22, and is equipped in 23 bottom surface of gliding groove and is used to stop B pulley 22 continue the baffle 24 for dropping out gliding groove 23 downwards；23 side of gliding groove is equipped with inclined-plane, and in the gliding groove close to inclined-plane 23 edges, which are equipped with, is used to padded wedge block 25,25 thickness of wedge block and 23 depth of gliding groove and no more than table top 20 with The spacing of support baseboard 28.The gliding groove 23 is additionally provided with A block 29 far from 25 side of wedge block, in wedge block 25 far from downslide 23 side of slot is equipped with B block 26；It is equipped with bolt on table circle 21, is moved on wedge block 25 simultaneously when B pulley 22 is ramped up Bolt is pulled to rotate table circle 21 can not to realize positioning when resisting B block 26.Rotary extension desktop includes that setting is supporting Turntable 1 and fan board group on bottom plate 28, rotate the turntable 1 and at least two crank groups being arranged on the turntable 1 are pushed out The dynamic fan board group that crank group end is arranged in forms an annular tabletop.

In entire desk body structure, table top 20 can be relatively rotated with turntable 1, realize table top by the linkage mechanism being equipped with Transmission connection between 20 and turntable 1.

As shown in Figure 21, Figure 22, Figure 26, Figure 27, Figure 28, Figure 29 and Figure 30, linkage mechanism includes being fixed on support baseboard Central shaft 31, the linkage unit on centrally disposed shaft 31 and the push-pull device at fixed being connected with linkage unit at 28 centers, The linkage unit includes the set bar pallet 32 being successively socketed in central shaft 31 from top to bottom, pressure spring cover board 33, center Axis pressure spring 34, the set bar pallet 32 are equipped with linkage pin 35, and pressure spring cover board 33 and set bar pallet 32 are with central axis Upper and lower stretch of pressure spring 34 slides up and down in central shaft 31；The push-pull device at fixed includes steel wire and is arranged in support baseboard Push-and-pull fixture 39, expansion rail on 28, the push-and-pull fixture 39 connect with one end of expansion rail and drive expansion rail sliding Dynamic, the other end of expansion rail is connect by steel wire with the bottom of pressure spring cover board 33, and the sliding rail that stretches passes through pierce tap dynamic pressure spring lid 33 extruding center axis pressure spring 34 of plate stretches in central shaft 31.

Central shaft 31 is noticeable for limiting central axis pressure spring 34, pressure spring cover board 33 and set bar pallet 32 It is that pressure spring cover board 33 and set bar pallet 32 are socketed in central shaft 31 by centrally-disposed through-hole, pressure spring Cover board 33 and set bar pallet 32 pass through the elastic hanging pneumatics of central axis pressure spring 34 on central axis pressure spring 34, set bar pallet Linkage pin 35 on 32 is used to connect each layer desktop of deformation desktop, is equipped with coaxial linkage hole on each layer desktop, passes through The linkage hole that the linkage insertion of pin 35 is located on each layer desktop can drive each layer desktop to rotate together, and the desktop of each layer It is successively set on the top of set bar pallet 32, when in use, moves push-and-pull fixture 39 to the direction far from central axis pressure spring 34, Expansion rail drives steel wire mobile to the direction far from central shaft 31 at this time, the mobile compression center of pierce tap dynamic pressure spring cover board 33 Axis pressure spring 34, central axis pressure spring 34 is shunk at this time, and pressure spring cover board 33 and set bar pallet 32 move down, at this time set bar pallet 32 are detached from each layer desktop on top, and each layer desktop independently rotates；Push-and-pull fixture is moved to the direction close to central axis pressure spring 34 39, steel wire reduces the pressure of pressure spring cover board 33 at this time, and pressure spring cover board 33 moves up under the elastic force of drop-down spring 11, links Pin pallet 32 moves up, and linkage pin 35 is connected to the linkage hole of each layer desktop, and thus each layer desktop can rotate together； It is worth noting that, set bar pallet 32 can be freely rotated in central shaft 31, and set bar pallet 32 and pressure spring lid It is absolute construction between plate 33, do not interact respective rotation.Expansion rail includes retaining rail 36 and is arranged in retaining rail Sliding rail 37 on 36；One end of the sliding rail 37 is connect by steel wire with 33 bottom of pressure spring cover board, and the other end passes through connection Bar 38 is connect with push-and-pull fixture 39；Retaining rail 36 is bolted to connection on the surface of corresponding position.

In order to guarantee stability of the pressure spring cover board 33 when receiving steel wire and pulling, steel wire includes left steel wire 40 and right steel wire 41, Zuo Gangsi 40 and right steel wire 41 one end be commonly connected to sliding rail 37 on, the other end pair of Zuo Gangsi 40 and right steel wire 41 Claim the two sides for being connected to 33 bottom midpoint of pressure spring cover board, by being pulled simultaneously with steel wire at the both ends of pressure spring cover board 33, phase Than there is better stability in single steel wire, slide up and down pressure spring cover board 33 steadily in central shaft 31, no It shifts.

Push-pull device at fixed further includes the steel wire pressure bar 42 being arranged on support baseboard 28 for changing steel wire draw direction；Due to The position of expansion rail and pressure spring cover board 33 is different, is likely to result in when steel wire pulls pressure spring cover board 33 that there are various lateral forces Situation, and steel wire is influenced to the pulling effect of pressure spring cover board 33, the steel wire pressure bar 42 of setting is used for the steering guide rail as steel wire, Change the draw direction of steel wire, to improve the cooperation between steel wire and pressure spring cover board 33.

The upper surface of support baseboard 28 is additionally provided with two and is respectively used to place left steel wire 40 and the steel wire of right steel wire 41 is flexible One end of deep gouge 44, the flexible deep gouge 44 of steel wire is located at 36 side of retaining rail, and the other end is located at 33 bottom of pressure spring cover board, described The flexible deep gouge 44 of steel wire is connected with steel wire bar deep gouge 45 in the side close to pressure spring cover board 33, and steel wire pressure bar 42 is arranged in steel wire bar In deep gouge 45；The steel wire for being located at 28 surface of support baseboard is arranged and is stretched in deep gouge 44 to steel wire, secures steel wire flexible Route in the process, avoids steel wire from interfering with each other in a relaxed state, so that use below goes wrong.On support baseboard 28 also Equipped with for preventing steel wire from skidding off the steel wire cover board 46 of the flexible deep gouge 44 of steel wire, the steel wire cover board 46 is in steel wire bar deep gouge 45 Top is equipped with steel wire through-hole 47, and steel wire cover board 46 is bolted to connection on support baseboard 28.It will by steel wire cover board 46 The flexible deep gouge 44 of steel wire covers, so that the surface of support baseboard 28 is more clean and tidy and beautiful.Simultaneously as the center A change 13 with It is equipped with washer between support baseboard 28, so that row forms certain gap, steel wire can be prevented by the steel wire cover board 46 being equipped with It drops out to influence other organisation operations outward.

Support baseboard 28 is equipped with the hand for placing push-and-pull fixture 39 between 28 edge of support baseboard and push-and-pull fixture 39 The flexible through-hole 48 of handle, when handle pulls out steel wire, handle can be placed into flexible through-hole 48, convenient for push-and-pull fixture 39 Handle placement while for handle rotation provide can big rotational angle, also make entire desk body cleaner and tidier, be worth It is noted that flexible through-hole 48 can also be able to be that 28 bottom surface of support baseboard is arranged in for through the through-hole of support baseboard 28 The groove of handle can be placed.

It is worth noting that because 28 center of support baseboard is equipped with the center A change 13, and among the center A change 13 For hollow structure, there are a spaces, the linkage unit to be just arranged for its center when being fastened on support baseboard 28 In the space.And the center A change 13 can be open and cover by the A disc 14 on 13 top of the center A change, the set bar described at this time Column 35 sequentially passes through A disc 14, turntable 1, B disc 18 and the center B change 19, wherein sets on A disc 14, turntable 1 and B disc 18 Have for the through-hole that passes through of linkage pin 35, through-hole need to be only aligned by when installation.And set bar pallet 32 can be in the change of the center A It pumps in 13 along axis, and the central axis pressure spring 34 of lower part pushes pressure spring cover board 33 and set bar pallet 32 court always Upper movement, so that linkage pin 35 is inserted into fixed blind hole, so that turntable 1 and table top 20 be made to be sequentially connected.Here pass through The steel wire pressing plate cooperates with the washer that 13 bottom of the center A change is arranged in, and avoids left steel wire 40 and right steel wire 41 from steel wire It is dropped out in flexible deep gouge 44, and can guarantee that steel wire can be slided smoothly and pressure spring cover board 33 is pulled to move downward.And it links Pin 32 center of pallet is socketed in central shaft 31, and the linear bearing by being equipped with has lower frictional force, so that linkage Pin pallet 32 can have mercy on central shaft 31 rotation.

The application method of the present embodiment: desk body entire first, which is in, fastens retracted position, at this time as shown in Figure 1.Then it draws The bolt of table circle 21 out, and rotary table circle 21 makes its downward screw expose rotary extension desktop.Push-and-pull fixture is pulled at this time 39, so that linkage pin 35 is inserted into the fixation blind hole being arranged on 20 bottom surface of table top, so that table top 20 and turntable 1 are rotatablely connected. If for linkage pin 35 just on the outside of fixed blind hole, slow Table top able to be rotated 20 to link pin 35 in central axis pressure spring at this time Alignment is moved upwards under 34 promotion and is inserted into corresponding fixed blind hole reaches transmission connection.Table top able to be rotated 20 to rotate at this time Flexible desktop rotates protruding simultaneously, can both stop when mother's fan 5 be bonded with male fan 4 and forms a completely ring-type desktop Table top able to be rotated 20.Then pull push-and-pull fixture 39 enable linkage pin 35 dropped out in central blind hole again make table top 20 with Turntable 1 is detached from rotation.Table top 20 can be rotated arbitrarily at this time, and the cyclic annular desktop of lower layer has been formed, and reach expansion effect.

The installation process of the present embodiment: firstly, by support baseboard 28 be arranged on chassis, while by linear track 6, lifting Track 12, central shaft 31, wedge block 25 and stopper are arranged on support baseboard 28.And it is parallel dead plate 27 and lifting is solid Fixed board 8 is mounted on corresponding sliding rail.And dug on support baseboard 28 steel wire stretch deep gouge 44, edge gliding groove 23, Institute's hole.Then the center A change 13 is installed, when installation center change, because fixed disk and change are identical radius Size, and be that will connect bolt between change and support baseboard 28, therefore use a kind of cleverly installation method.In fixed disk The fixation hole of corresponding change is equipped with through-hole, because change is equipped with multiple fixation holes and is used to install bolt, but only need to be in fixed disk It is equipped with a through-hole.Rotation fixed disk makes through-hole correspond to each fixation hole at this time, then by bolt from through-hole side It penetrates and is inserted into corresponding fixation hole and be fixed, successively rotating fixed disk then can be achieved consolidating change and support baseboard 28 Fixed connection.Then A disc 14 and turntable 1 are placed in the center A change 13.Simultaneously by hingedly on the turntable 1 upper crank 2 with Lower crank 3 is correspondingly connected on parallel dead plate 27 or lifting fixed plate 8.B disc 18 and table top 20 are installed again at this time.And in B Heart change 19 is directly first to be mounted in the way of the center A change 13 on 20 bottom surface of table top, and be equipped in the center B change 19 Four studs.Corresponding four are equipped in the center A change 13, A disc 14, turntable 1, B disc 18, the center B change 19 to lead to Hole, also by four through-holes alignment of all components when installation, stud energy when convenient for tipping upside down on table top 20 on B disc 18 It is enough to be just inserted into four through-holes and close window A center change 13, A disc 14, turntable 1, B disc 18 and the center B change 19.Finally In fixed bolt.

The present invention is not limited to above-mentioned optional embodiment, anyone can show that other are each under the inspiration of the present invention The product of kind form.Above-mentioned specific embodiment should not be understood the limitation of pairs of protection scope of the present invention, protection of the invention Range should be subject to be defined in claims, and specification can be used for interpreting the claims.

Claims (10)

1. a kind of changeable table, it is characterised in that: supported including the support baseboard (28) being fixed in a support construction and setting Table top (20) on bottom plate (28) is equipped with rotation there are gap between table top (20) and support baseboard (28) and in gap and stretches Contracting desktop, the rotary extension desktop are rotatablely connected with table top (20), rotary extension desktop and support baseboard (28).

2. a kind of changeable table according to claim 1, it is characterised in that: further include being flexibly connected with support baseboard (28) Table circle (21), the table circle (21) can have mercy on, and simultaneously table top (20) and support baseboard are exposed in downward spiral movement for support baseboard (28) rotation (28) gap between is to keep rotary extension desktop protruding.

3. a kind of changeable table according to claim 2, it is characterised in that: the table circle (21) and support baseboard (28) screw thread Connection.

4. a kind of changeable table according to claim 2, it is characterised in that: be provided at least three on table circle (21) inner ring A B pulley (22), the B pulley (22) and support baseboard (28) top surface outer ring contact slide, and in support baseboard (28) outer ring It is equipped with gliding groove (23) corresponding with B pulley (22), and is equipped in gliding groove (23) bottom surface and is used to that B pulley (22) is stopped to continue The baffle (24) of gliding groove (23) is dropped out downwards；Gliding groove (23) side is equipped with inclined-plane, and in the gliding groove close to inclined-plane (23) edge, which is equipped with, is used to padded wedge block (25), wedge block (25) thickness and gliding groove (23) depth and is not more than The spacing of table top (20) and support baseboard (28).

5. a kind of changeable table according to claim 4, it is characterised in that: the gliding groove (23) is far from wedge block (25) one Side is additionally provided with A block (29), is equipped with B block (26) far from gliding groove (23) side in wedge block (25)；It is set on table circle (21) There is bolt, moves on wedge block (25) and resist B block (26) Shi Ladong bolt when B pulley (22) is ramped up and make table circle (21) it can not rotate to realize positioning.

6. a kind of changeable table according to claim 1-5, it is characterised in that: the rotary extension desktop includes setting Turntable (1) and fan board group on support baseboard (28) are set, the turntable (1) is rotated and to be arranged on turntable (1) at least Two crank groups push out fan board group one annular tabletop of formation that crank group end is arranged in；The crank group includes hinged (1) side of turntable upper crank (2) and be hinged on the lower crank (3) of another side, the fan board group includes and upper song The hinged male fan (4) of handle (2) and the female fan (5) hinged with lower crank (3)；Board group is fanned when expansion to be pushed by crank group along straight line It slides in and out, fan board group is unfolded outward from two layers of stacked state and female fan (5) decline is parallel with male fan (4) and is finally spliced into one A annular tabletop.

7. a kind of changeable table according to claim 6, it is characterised in that: the support baseboard (28) is equipped with linear track (6) and on linear track (6) sliding block (7) slided, the male fan (4) and female fan (5) are each attached on corresponding sliding block (7) It is slided along linear track (6)；Fluctuating orbit (12) are additionally provided in mother's fan (5) bottom, outboard end is set in fluctuating orbit (12) There is inclined-plane, female fan (5) bottom is equipped with the A pulley (30) slided on fluctuating orbit (12), and mother's fan (5) is along fluctuating orbit (12) inclined-plane is moved downward to be flushed with public affairs fan (4)；Female fan (5) bottom is equipped with the lifting being fixed on corresponding sliding block (7) Fixed plate (8), the lifting fixed plate (8) is equipped at least two lifting shafts (9) and female fan (5) is socketed in lifting shaft (9) it pumps on；Public fan (4) bottom is equipped with the parallel dead plate (27) being fixed on corresponding sliding block (7).

8. a kind of changeable table according to claim 7, it is characterised in that: turntable (1) bottom passes through the center A being equipped with Change (13) and support baseboard (28) are rotatablely connected；Diameter is additionally provided between turntable (1) and the center A change (13) less than in A The A disc (14) of heart change (13), the A disc (14) are fixed on center change (13), pass through A disc (14) and the center A The annulus formed between change (13) accommodates the lower crank (3) of withdrawal.

9. a kind of changeable table according to claim 8, it is characterised in that: in the turntable (1) far from the change of the center A (13) Side is equipped with B disc (18), passes through A disc (14) and B disc (18) clamping turntable (1)；It is additionally provided in B on B disc (18) Heart change (19) is equipped with table top (20) on the change of the center B (19)；The table top (20) passes through the change of the center B (19) and B disc (18) it is rotatablely connected, the B disc (18) is fixedly connected with A disc (14)；It is equipped with linkage mechanism on support baseboard (28), leads to Crossing linkage mechanism makes table top (20) and turntable (1) to be sequentially connected and make to fan board group expansion or withdraw by Table top able to be rotated (20).

10. a kind of changeable table according to claim 9, it is characterised in that: the linkage mechanism includes being fixed on support bottom Central shaft, the linkage unit on centrally disposed shaft and the push-pull device at fixed being connected with linkage unit at plate (28) center, The linkage unit includes the set bar pallet, pressure spring cover board, central axis pressure spring being successively socketed in central shaft from top to bottom, The set bar pallet is equipped with linkage pin, pressure spring cover board and set bar pallet as the upper and lower of central axis pressure spring stretches in It is slided up and down on mandrels stem；It is additionally provided with washer between the center A change and support baseboard (28) and increases gap to guarantee to link Mechanism being capable of stable operation.