CN208850796U - A kind of lift linkage mechanism and support baseboard deforming desktop - Google Patents

Abstract

The utility model belongs to catering appliances technical field, disclose a kind of lift linkage mechanism and support baseboard for deforming desktop, lift linkage mechanism includes central shaft, the linkage unit on centrally disposed shaft and the push-pull device at fixed being connected with linkage unit, linkage unit includes set bar pallet, pressure spring cover board, central axis pressure spring, and pressure spring cover board and set bar pallet slide up and down in central shaft with upper and lower stretch of central axis pressure spring；Push-pull device at fixed includes that steel wire and push-and-pull fixture, expansion rail, the one end for pushing and pulling fixture and expansion rail connect and expansion rail driven to slide, and the other end of expansion rail is stretched in central shaft by pierce tap dynamic pressure spring cover board extruding center axis pressure spring；Support baseboard is equipped with above-mentioned lift linkage mechanism；The lift linkage structure of the utility model can be such that the multilayer desktop for deforming desktop realizes in the conversion for rotating coaxially and independently rotating both of which, and structure is simple, facilitates operation.

Description

A kind of lift linkage mechanism and support baseboard deforming desktop

Technical field

The utility model belongs to catering appliances technical field more particularly to dining table field of mechanisms, and in particular to a kind of deformation The lift linkage mechanism and support baseboard of desktop.

Background technique

With the improvement of living standards, the hotel industry development in China is rapid, even if often eating for one in common dinner party Entree, garnishes and soup dishes, which add up, on table will generally reach about ten kinds of vegetables；The grand dinner party of some comparisons is served Product are often laminated with a large amount of dish with regard to more on dining table.In addition, the exquisite color shape taste of good dish is various, therefore many dish are all It is contained with zingy moulding, or using unique exquisite container, but such dish would generally account for after laying out table According to certain space, after service plate is stacked together not only unsightly, but also it is unhygienic, a person sponging on an aristocrat provokes dish and carrys out also inconvenience.It is more at present Using the rotating table top of multilayer, although the rotating table top of multilayer can be convenient customer and take dish, increase the area of putting of dish, but It is that each layer desktop of current multi-layer rotating desktop is divided into and rotates coaxially and independently rotate two kinds, but it is different in order to adapt to Scene, no mechanism realize the conversion for rotating coaxially and independently rotating both of which, and there is inconvenient ask of picking up food with chopsticks Topic.

, application number: CN201220533155.8, the applying date: 2012-10-17, synopsis: the utility model relates to food service items fields, and in particular to a kind of Multi-store rotary dining table, including Fixed desktop (1), support rod (2) and rotating table top (3), fixed desktop (1) center is equipped with the support rod (2), described Support rod (2) is equipped with the rotating table top (3)；The frame rotating table top (3) includes the bottom for being arranged concentrically and being separated from each other Turntable (31) and top layer turntable (32), the diameter of the bottom turntable (31) are more than or equal to the diameter of the top layer turntable (32), Fixed desktop (1) center is equipped with the circular recess (11) concentric with the rotating table top (3), and the circular recess (11) diameter is more than or equal to the diameter of the bottom turntable (31), is less than the diameter of the fixed desktop (1).The utility model Multi-layer rotating dinner plate have design rationally, easy to use, clean hygiene, increase table capacity the advantages that.

There is no solve the technical issues of first having for above-mentioned dining table.

Utility model content

The utility model provides a kind of lift linkage mechanism and support baseboard for deforming desktop, for solving the prior art Middle multi-layer dining table does not have mechanism to realize the conversion for rotating coaxially and independently rotating both of which, and there is inconveniences of picking up food with chopsticks The technical issues of.

The technology employed by the present utility model is

A kind of lift linkage mechanism deforming desktop does not have mechanism to rotate coaxially to realize to solve existing multi-layer dining table The conversion for independently rotating both of which, there is the problem of inconvenient of picking up food with chopsticks, including are fixed on support baseboard center Central shaft, the linkage unit on centrally disposed shaft and the push-pull device at fixed being connected with linkage unit, the linkage is single Member includes set bar pallet, pressure spring cover board, the 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 central shaft Lower slider；The push-pull device at fixed includes steel wire and the push-and-pull fixture, the expansion rail that are arranged on support baseboard, the push-and-pull folder Tool connect with one end of expansion rail and expansion rail is driven to slide, and the other end of expansion rail passes through steel wire and pressure spring cover board Bottom connection, the sliding rail that stretches are stretched in central shaft by pierce tap dynamic pressure spring cover board extruding center axis pressure spring.

Central shaft is for limiting central axis pressure spring, pressure spring cover board and set bar pallet, it is notable that pressure spring lid Plate and set bar pallet are socketed in central shaft by centrally-disposed through-hole, pressure spring cover board and set bar support Disk is through the elastic hanging pneumatics of central axis pressure spring on central axis pressure spring, and the linkage pin on set bar pallet is for connecting deformation Each layer desktop of desktop is equipped with coaxial linkage hole on each layer desktop, is located on each layer desktop by linkage pin insertion Linkage hole can drive each layer desktop to rotate together, and the desktop of each layer is successively set on the top of set bar pallet, In use, moving push-and-pull fixture to the direction far from central axis pressure spring, expansion rail drives steel wire to far from central shaft at this time Direction it is mobile, pierce tap dynamic pressure spring cover board is mobile to compress central axis pressure spring, and central axis pressure spring is shunk at this time, pressure spring cover board and connection Dynamic pin pallet moves down, and set bar pallet and each layer desktop on top are detached from this time, and each layer desktop independently rotates；To in Push-and-pull fixture is moved in the direction of mandrel pressure spring, and steel wire reduces the pressure of pressure spring cover board at this time, elastic force of the pressure spring cover board in spring Under move up, set bar pallet moves up, and linkage pin is connected to the linkage hole of each layer desktop, thus each layer desktop To rotate together；It is worth noting that, set bar pallet can be freely rotated in central shaft, and set bar pallet and pressure It is absolute construction between spring cover board, do not interact respective rotation.

Further, expansion rail includes retaining rail and the sliding rail being arranged in retaining rail；The one of the sliding rail End is connect by steel wire with pressure spring cover board bottom, and the other end is connect by connecting rod with push-and-pull fixture；Retaining rail is solid by bolt Surely it is connected to the surface of corresponding position.

Further, in order to guarantee stability of the pressure spring cover board when receiving steel wire and pulling, steel wire includes left steel wire and the right side One end of steel wire, left steel wire and right steel wire is commonly connected on sliding rail, and the other end of left steel wire and right steel wire is symmetrically connected to The two sides of pressure spring cover board bottom midpoint, by being pulled simultaneously with steel wire at the both ends of pressure spring cover board, compared to single steel wire With better stability, slides up and down pressure spring cover board steadily in central shaft, do not shift.

Further, push-pull device at fixed further includes the steel wire pressure being arranged on support baseboard for changing steel wire draw direction Stick；Since the position of expansion rail and pressure spring cover board is different, it is likely to result in when steel wire pulls pressure spring cover board that there are various lateral The case where power, and steel wire is influenced to the pulling effect of pressure spring cover board, the steel wire pressure bar 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.

A kind of support baseboard deforming desktop, the support baseboard are equipped with above-mentioned lift linkage mechanism；It is described solid Orbit determination is bolted to connection in the upper surface of support baseboard, and the push-and-pull fixture is bolted to connection in support baseboard Lower surface, the support baseboard retaining rail and push-and-pull fixture between be equipped with intercommunicating pore, the connecting rod through intercommunicating pore simultaneously And both ends are connect with push-and-pull fixture and sliding rail respectively.

The bottom of desktop is arranged in support baseboard, and push-and-pull fixture is by pulling connecting rod to drive sliding rail in retaining rail Sliding, and then pressure spring is tightened or loosens by steel wire and pressure spring cover board, set bar pallet is moved up and down, is realized to multilayer desktop Be connected, push-and-pull fixture setting can be more hidden in support baseboard bottom, will not influence the appearance of entire desk, and just Fixture is pushed and pulled in pulling, it is easy to use.

Further, the upper surface of support baseboard is additionally provided with two and is respectively used to place left steel wire and the steel wire of right steel wire is stretched One end of shrink mark slot, the flexible deep gouge of steel wire is located at retaining rail side, and the other end is located at pressure spring cover board bottom, and the steel wire is stretched Shrink mark slot is connected with steel wire bar deep gouge in the side close to pressure spring cover board, and steel wire pressure bar is arranged in steel wire bar deep gouge；It will be located at The steel wire setting on support baseboard surface is stretched in deep gouge to steel wire, is secured route of steel wire during flexible, is avoided steel Silk interferes with each other in a relaxed state, so that use below goes wrong.

Further, the steel wire cover board for preventing steel wire from skidding off the flexible deep gouge of steel wire is additionally provided on support baseboard, it is described Steel wire cover board is equipped with steel wire through-hole at the top of steel wire bar deep gouge, and steel wire cover board is bolted to connection on support baseboard. The steel wire deep gouge that stretches is covered by steel wire cover board, so that the surface of support baseboard is more clean and tidy and beautiful.

Further, support baseboard is equipped with the hand for placing push-and-pull fixture between support baseboard edge and push-and-pull fixture The flexible through-hole of handle, when handle pulls out steel wire, handle can be placed into flexible through-hole, convenient for pushing and pulling the handle of fixture Placement while for handle rotation provide can big rotational angle, also make entire desk body cleaner and tidier, it is noticeable Be, flexible through-hole can for through the through-hole of support baseboard, can also be support baseboard bottom surface is set can place handle Groove.

The utility model has the following beneficial effects:

(1) the lift linkage structure of the utility model can make the multilayer desktop for deforming desktop realize rotating coaxially and The conversion of independent rotation both of which, and structure is simple, facilitates operation.

(2) the lift linkage structure setting on the support baseboard of the utility model is hidden, realizes lifting linkage function The appearance of desk body will not be impacted, and cooperated between each component conveniently simultaneously, it is beautiful and clean.

Detailed description of the invention

Fig. 1 is the top structure schematic diagram of the utility model support baseboard；

Fig. 2 is the bottom substance schematic diagram of the utility model support baseboard；

Fig. 3 is the schematic diagram of the utility model linkage mechanism；

Fig. 4 is the schematic diagram of the utility model steel wire pressure bar, the flexible deep gouge of steel wire and steel wire bar deep gouge；

Fig. 5 is the structural schematic diagram of the utility model steel wire cover board；

Outline structural diagram when Fig. 6 is the contraction of the utility model；

Outline structural diagram when Fig. 7 is the expansion of the utility model；

Fig. 8 is the split type configuration schematic diagram in part of the utility model；

Fig. 9 is the support baseboard of the utility model and the configuration schematic diagram of parts thereof；

Figure 10 is the side perspective structural schematic diagram of the utility model；

Figure 11 is the perspective structure perspective diagram when female fan splices with male fan of the utility model；

Figure 12 is perspective structure perspective diagram when female fan of the utility model falls just below parallel with male fan；

Figure 13 is the structural schematic diagram of the bottom surface of table top of the utility model；

Figure 14 is the turntable of the utility model and the axis geodesic structure schematic diagram of crank group；

Figure 15 is the structural schematic diagram of female fan of the utility model and the linear bearing of bottom；

Figure 16 is the lifting fixed plate structure schematic diagram of the utility model；

Figure 17 is the parallel dead plate structural 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 utility model support baseboard axis side structure schematic diagram；

Figure 21 is the support baseboard overlooking structure diagram with linkage mechanism of the utility model；

Figure 22 is the axis side structure schematic diagram of the utility model set bar pallet.

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 is further elaborated the utility model.

Embodiment 1:

As shown in Figs. 1-5, a kind of lift linkage mechanism deforming desktop, including being fixed in 28 center of support baseboard Mandrels stem 31, the linkage unit on centrally disposed shaft 31 and the push-pull device at fixed being connected with linkage unit, the linkage are single Member includes set bar pallet 32, pressure spring cover board 33, the central axis pressure spring 34 being successively socketed in central shaft 31 from top to bottom, institute State set bar pallet 32 and be equipped with linkage pin 35, pressure spring cover board 33 and set bar pallet 32 with central axis pressure spring 34 up and down It stretches and is slided up and down in central shaft 31；The push-pull device at fixed includes steel wire and the push-and-pull being arranged on support baseboard 28 folder Have 39, expansion rail, the push-and-pull fixture 39 connect with one end of expansion rail and expansion rail is driven to slide, expansion rail The other end is connect by steel wire with the bottom of pressure spring cover board 33, and the sliding rail that stretches passes through 33 extruding center axis of pierce tap dynamic pressure spring cover board Pressure spring 34 stretches in central shaft 31.

When in use, push-and-pull fixture 39 is moved to the direction far from central axis pressure spring 34, expansion rail drives steel wire at this time Mobile to the direction far from central shaft 31, pierce tap dynamic pressure spring cover board 33 is mobile to compress central axis pressure spring 34, while central axis Pressure spring 34 is shunk, and pressure spring cover board 33 and set bar pallet 32 move down, at this time each layer desktop of set bar pallet 32 and top It is detached from, each layer desktop independently rotates；Push-and-pull fixture 39 is moved to the direction close to central axis pressure spring 34, steel wire is to pressure spring lid at this time The pressure of plate 33 reduces, and pressure spring cover board 33 moves up under the elastic force of spring, and set bar pallet 32 moves up, and link pin 35 are 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 It can be freely rotated in central shaft 31, and be absolute construction between set bar pallet 32 and pressure spring cover board 33, not mutually Influence respective rotation.

Embodiment 2:

On the basis of embodiment 1, expansion rail includes retaining rail 36 and the sliding rail 37 being arranged in retaining rail 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 connecting rod 38 and push-and-pull fixture 39 Connection；Retaining rail 36 is bolted to connection on the surface of corresponding position；Steel wire includes left steel wire 40 and right steel wire 41, Zuo Gang One end of silk 40 and right steel wire 41 is commonly connected on sliding rail 37, and the other end of Zuo Gangsi 40 and right steel wire 41 is symmetrically connected to The two sides of 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, compared to single Steel wire has better stability, slides up and down pressure spring cover board 33 steadily in central shaft 31, does not shift； 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 expansion rail It is different with the position of pressure spring cover board 33, the case where there are various lateral forces, is likely to result in when steel wire pulls pressure spring cover board 33, and Steel wire is influenced to the pulling effect of pressure spring cover board 33, and the steel wire pressure bar 42 of setting changes steel for the steering guide rail as steel wire The draw direction of silk, to improve the cooperation between steel wire and pressure spring cover board 33.

Embodiment 3:

As shown in Figs. 1-5, a kind of support baseboard 28 deforming desktop, support baseboard 28 are equipped with the lift in embodiment Linkage mechanism；The retaining rail 36 is bolted to connection in the upper surface of support baseboard 28, and the push-and-pull fixture 39 passes through Bolt is fixedly connected on the lower surface of support baseboard 28, and the support baseboard 28 is equipped between retaining rail 36 and push-and-pull fixture 39 Intercommunicating pore 43, the connecting rod 38 is through intercommunicating pore 43 and both ends are connect with push-and-pull fixture 39 and sliding rail 37 respectively.

The bottom of desktop is arranged in support baseboard 28, and push-and-pull fixture 39 is by pulling connecting rod 38 that sliding rail 37 is driven to exist It is slided in retaining rail 36, when in use, moves push-and-pull fixture 39 to the direction far from central axis pressure spring 34, at this time expansion rail band Dynamic steel wire is mobile to the direction far from central shaft 31, and pierce tap dynamic pressure spring cover board 33 is mobile to compress central axis pressure spring 34, simultaneously Central axis pressure spring 34 is shunk, and pressure spring cover board 33 and set bar pallet 32 move down, and set bar pallet 32 and top is each at this time Layer desktop is detached from, and each layer desktop independently rotates；Push-and-pull fixture 39 is moved to the direction close to central axis pressure spring 34, at this time steel wire pair The pressure of pressure spring cover board 33 reduces, and pressure spring cover board 33 moves up under the elastic force of spring, and set bar pallet 32 moves up, connection Dynamic pin 35 is connected to the linkage hole of each layer desktop, and thus each layer desktop can rotate together, and the push-and-pull setting of fixture 39 is being propped up Supportting 28 bottom of bottom plate can be more hidden, will not influence the appearance of entire desk, and convenient for pulling push-and-pull fixture 39, user Just.

Embodiment 4:

On the basis of embodiment 3, the upper surface of support baseboard 28 is additionally provided with two and is respectively used to place left 40 He of steel wire One end of the flexible deep gouge 44 of the steel wire of right steel wire 41, the flexible deep gouge 44 of steel wire is located at 36 side of retaining rail, and the other end is located at described 33 bottom of pressure spring cover board, the flexible deep gouge 44 of the steel wire are connected with steel wire bar deep gouge 45, steel in the side close to pressure spring cover board 33 Silk pressure bar 42 is arranged in steel wire bar deep gouge 45；The steel wire setting for being located at 28 surface of support baseboard is stretched deep gouge 44 to steel wire It is interior, route of steel wire during flexible is secured, steel wire is avoided to interfere with each other in a relaxed state, so that use below goes out Existing problem；The steel wire cover board 46 for preventing steel wire from skidding off the flexible deep gouge 44 of steel wire, the steel wire are additionally provided on support baseboard 28 Cover board 46 is equipped with steel wire through-hole 47 at the top of steel wire bar deep gouge 45, and steel wire cover board 46 is bolted to connection in support baseboard On 28；The steel wire deep gouge 44 that stretches is covered by steel wire cover board 46, so that the surface of support baseboard 28 is more clean and tidy and beautiful；Branch Support bottom plate 28 is equipped with the flexible logical of the handle for placing push-and-pull fixture 39 between 28 edge of support baseboard and push-and-pull fixture 39 Hole 48, when handle pulls out steel wire, handle can be placed into flexible through-hole 48, be put convenient for pushing and pulling the handle of fixture 39 Rotation while setting for handle provides rotational angle that can be big, also makes entire desk body cleaner and tidier, it is notable that stretch Contracting through-hole 48 can for through the through-hole of support baseboard 28, can also be 28 bottom surface of support baseboard is set can place handle Groove.

Embodiment 5:

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, Fig. 9 and Figure 12, Figure 13, rotary extension desktop, including turntable 1, 1 one side of turntable central angles such as the center of circle of having mercy on set that there are four upper cranks 2, and equally corresponding upper crank 2 is hinged on 1 another side of turntable There are four lower cranks 3.Equal central angles are equipped with eight linear tracks 6 on support baseboard 28, and are equipped with and can slide on linear track 6 Dynamic sliding block 7, upper 2 outboard end of crank are hinged with parallel dead plate 27.The parallel dead plate 27 is a kind of plate-shaped piece of metal, On offer multiple holes be used to fix, the parallel dead plate 27 is bolted on corresponding sliding block 7.Parallel Fixed plate 27 is equipped with the pull rod 10 perpendicular to parallel dead plate 27 close to upper 2 end of crank, and upper crank 2 and 10 top of pull rod are cut with scissors It connects.

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 14-22, linkage mechanism includes the central shaft 31 for being fixed on 28 center of support baseboard, centrally disposed Linkage unit on shaft 31 and the push-pull device at fixed being connected with linkage unit, the linkage unit include successively covering from top to bottom Set bar pallet 32, pressure spring cover board 33, central axis pressure spring 34 in central shaft 31 are connect, the set bar pallet 32 is equipped with Pin 35, pressure spring cover board 33 and set bar pallet 32 link as the upper and lower of central axis pressure spring 34 stretches in central shaft 31 Lower slider；The push-pull device at fixed includes steel wire and the push-and-pull fixture 39, the expansion rail that are arranged on support baseboard 28, described to push away Fixture 39 is drawn to connect with one end of expansion rail and expansion rail is driven to slide, the other end of expansion rail passes through steel wire and pressure spring The bottom of cover board 33 connects, and the sliding rail that stretches is by 33 extruding center axis pressure spring 34 of pierce tap dynamic pressure spring cover board in central shaft 31 It is flexible.

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 utility model is not limited to above-mentioned optional embodiment, anyone can obtain under the enlightenment of the utility model Other various forms of products, however, making any variation in its shape or structure, all the utility model rights that falls into are wanted The technical solution in confining spectrum is sought, is all fallen within the protection scope of the utility model.

Claims (8)

1. it is a kind of deform desktop lift linkage mechanism, including be fixed on support baseboard (28) center central shaft (31), Linkage unit on centrally disposed shaft (31) and the push-pull device at fixed being connected with linkage unit, which is characterized in that described Moving cell includes set bar pallet (32), the pressure spring cover board (33), center being successively socketed on central shaft (31) from top to bottom Axis pressure spring (34), the set bar pallet (32) are equipped with linkage pin (35), pressure spring cover board (33) and set bar pallet (32) As upper and lower stretch of central axis pressure spring (34) slides up and down on central shaft (31)；The push-pull device at fixed include steel wire and Push-and-pull fixture (39), the expansion rail being arranged on support baseboard (28), one end of push-and-pull fixture (39) and expansion rail It connects and expansion rail is driven to slide, the other end of expansion rail is connect by steel wire with the bottom of pressure spring cover board (33), is stretched Sliding rail is stretched on central shaft (31) by pierce tap dynamic pressure spring cover board (33) extruding center axis pressure spring (34).

2. a kind of lift linkage mechanism for deforming desktop according to claim 1, it is characterised in that: the expansion rail Including retaining rail (36) and the sliding rail (37) being arranged on retaining rail (36)；One end of sliding rail (37) passes through steel wire It is connect with pressure spring cover board (33) bottom, the other end is connect by connecting rod (38) with push-and-pull fixture (39).

3. a kind of lift linkage mechanism for deforming desktop according to claim 2, it is characterised in that: the steel wire includes One end of left steel wire (40) and right steel wire (41), Zuo Gangsi (40) and right steel wire (41) is commonly connected in sliding rail (37), left The other end of steel wire (40) and right steel wire (41) is symmetrically connected to the two sides of pressure spring cover board (33) bottom midpoint.

4. a kind of lift linkage mechanism for deforming desktop according to claim 3, it is characterised in that: the push-pull device at fixed It further include being arranged on support baseboard (28) for changing the steel wire pressure bar (42) of steel wire draw direction.

5. a kind of support baseboard for deforming desktop, it is characterised in that: the support baseboard (28) is equipped with as claimed in claim 4 Lift linkage mechanism；The retaining rail (36) is bolted to connection in the upper surface of support baseboard (28), the push-and-pull Fixture (39) is bolted to connection in the lower surface of support baseboard (28), the support baseboard (28) in retaining rail (36) and Push and pull and be equipped with intercommunicating pore (43) between fixture (39), the connecting rod (38) through intercommunicating pore (43) and both ends respectively with push-and-pull Fixture (39) and sliding rail (37) connection.

6. a kind of support baseboard for deforming desktop according to claim 5, it is characterised in that: the support baseboard (28) Upper surface is additionally provided with two and is respectively used to place left steel wire (40) and the steel wire of right steel wire (41) stretches deep gouge (44), and steel wire is flexible One end of deep gouge (44) is located at retaining rail (36) side, and the other end is located at pressure spring cover board (33) bottom, and the steel wire is flexible Deep gouge (44) 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).

7. a kind of support baseboard for deforming desktop according to claim 5, it is characterised in that: on the support baseboard (28) It is additionally provided with the steel wire cover board (46) for preventing steel wire from skidding off steel wire flexible deep gouge (44), the steel wire cover board (46) is in steel wire bar The top of deep gouge (45) is equipped with steel wire through-hole (47), and steel wire cover board (46) is bolted to connection on support baseboard (28).

8. a kind of support baseboard for deforming desktop according to claim 5, it is characterised in that: the support baseboard (28) exists The flexible through-hole of the handle for placing push-and-pull fixture (39) is equipped between support baseboard (28) edge and push-and-pull fixture (39) (48)。