CN105708129A

CN105708129A - Round table with convertible table top size

Info

Publication number: CN105708129A
Application number: CN201610192820.4A
Authority: CN
Inventors: 戴宁; 刘盛贤
Original assignee: Jiangsu Institute of Architectural Technology
Current assignee: Jiangsu Institute of Architectural Technology
Priority date: 2016-03-30
Filing date: 2016-03-30
Publication date: 2016-06-29
Anticipated expiration: 2036-03-30
Also published as: CN105708129B

Abstract

The invention discloses a round table with convertible table top size. The round table comprises a table top part composed of six pentagonal table tops, one regular dodecagonal table top and six sector table tops and a conversion mechanism for converting the size of the table top part, wherein when the table top is converted into a large table top, the table top is composed of three single layers: a central dodecagonal table top at the center, six pentagonal table tops on the edge and six sector table tops on the edge, and the six pentagonal table tops and the six sector table tops are arranged at intervals; and when the table top is converted into a small table top, the table top consists of six sector table tops after contraction and is positioned on the top layer, six pentagonal table tops are lowered to the middle layer and contracted into a sexfoil shape, and the central dodecagonal table top is positioned on the bottom layer. In the invention, the table top can be converted into two sizes, and the size conversion of the table top is realized by rotating nonadjacent two sectors on the table top by one person; and therefore, the operation is simple, and the needs of at least two groups of people in a library, meeting room and family can be satisfied.

Description

A kind of convertible round table of Desktop Dimensions

Technical field

The present invention relates to a kind of library science and commonly use desk, specifically a kind of convertible round table of Desktop Dimensions, belongs to technical field of furniture.

Background technology

Round table is all applied in library, meeting room, dining room, family.Mostly existing table top of round table size is constant, and the round table that some families use is foldable to square table, it is achieved from large to small, when returning again to the part folded, it is achieved change from small to big, it is achieved that the conversion of more relatively large round table and more relatively small square table.Also having rectangle square table to be transformed to square square table, people is smaller rectangle square table time few, is transformed to larger square square table when people is many.

At present, but without changing from small to big or round table from large to small, when less than 6 people, wish that desktop is little round table, when close to 12 people, wish that desktop is big round table, so have the needs such as a desk study or the dining that can meet at least two group people.

Summary of the invention

For above-mentioned prior art Problems existing, the present invention provides a kind of convertible round table of Desktop Dimensions, the round table of changeable size top, when less than 6 people, desktop is smaller round table, when close to 12 people, desktop is larger round table, the conversion of size of desktop is by two pieces of fan-shaped realizations non-conterminous on people's rotary desktop, convenient and practical, it is possible to resolve at least two group human needs in library, meeting room, dining room, family.

To achieve these goals, the technical solution used in the present invention is: a kind of convertible round table of Desktop Dimensions, including the tabletop section being made up of six pieces of pentagon desktops, one piece of positive dodecagon desktop and six pieces of fan-shaped desktops, and tabletop section is made to carry out the shifter of size conversion；It is made up of three fractional monolayer when being converted to large table surface, it is in 12 jiaos of one piece of center desktop of center respectively, is positioned at six pieces of pentagon desktops of marginal position and is positioned at six pieces of fan-shaped desktops of marginal position, six pieces of pentagon desktops and six pieces of alternate layouts of fan-shaped desktop；When being converted to small table surface, desktop forms after being shunk by six pieces of fan-shaped desktops, is positioned at top layer；Six pieces of pentagon desktops drop to intermediate layer, and are punctured into sexfoil, and 12 jiaos of center desktop is positioned at bottom.

The present invention is further, and described shifter includes that six pieces of pentagon desktops inside contract abduction mechanism, six pieces of fan-shaped desktops inside contract abduction mechanism, positive dodecagon desktop lifting mechanism and pentagon desktop lifting mechanism.

The present invention is further, and six pieces of described pentagon desktops inside contract abduction mechanism, including the first row star-wheel, first rope sheave, the first centre wheel, the six roots of sensation the first backbar assembly, steel cable, first connecting rod, six the first outer rope sheaves, the outer Assembly of pin of the six roots of sensation first, pentagon glide path, six roots of sensation pentagon external support axle, the outer rope sheave bearing pin of the six roots of sensation, six steel wire rope pintle hook locks, supporting axle, steel wire rope guide wheel and the first pilot pin in six roots of sensation pentagon；The bottom surface fixed installation pentagon glide path of described six pieces of pentagon desktops；Described six roots of sensation pentagon external support axle, six roots of sensation pentagon interior supporting axle are respectively and fixedly installed in the hole of the six roots of sensation the first backbar assembly, in described six roots of sensation pentagon external support axle and six roots of sensation pentagon, the cylinder of supporting axle upper end can radially slide in pentagon glide path, six described the first outer rope sheaves are connected with the six roots of sensation the first backbar assembly by the outer rope sheave bearing pin of the six roots of sensation, described steel cable is arranged on six the first outer rope sheaves, described first connecting rod the inner is fixedly mounted on steel cable, outer end be connected to six pieces pentagonal below；Six described steel wire rope pintle hook locks are by locked on steel cable for the inner of six first connecting rods, described steel wire rope guide wheel and the first pilot pin combined effect, steel cable is made to be longitudinally arranged along the respective backbar of the six roots of sensation the first backbar assembly, described the first row star-wheel and the first centre wheel are meshed, and the first row star-wheel and the first rope sheave are arranged on the six roots of sensation the first backbar assembly by bearing pin.

The present invention is further, and six pieces of described fan-shaped desktops inside contract abduction mechanism, move guide groove including six roots of sensation sector desktop, second connecting rod, six the second outer rope sheaves, the outer bearing pin of the six roots of sensation second, six locking pins, the second rope sheave, the second centre wheel, the outer rope sheave bearing pin of the six roots of sensation, six roots of sensation sector external support axle, six steel wire rope pintle hook locks, supporting axle, second steel wire rope, the second backbar assembly in six roots of sensation sector, second pilot pin, the second planetary gear and the second rope fairlead；Described bottom surface fixed installation six roots of sensation sector desktop six pieces fan-shaped moves guide groove, described six roots of sensation sector external support axle, six roots of sensation sector interior supporting axle are respectively and fixedly installed in the hole of the six roots of sensation the second backbar assembly, in the cylinder of six roots of sensation sector external support axle upper end, six roots of sensation sector, the cylinder of supporting axle upper end can move at six roots of sensation sector desktop and radially slide in guide groove, six described the second outer rope sheaves are connected with the six roots of sensation the second backbar assembly respectively by the outer bearing pin of the six roots of sensation second, and second described steel wire rope is arranged on six the second rope sheaves；The inner of described second connecting rod is fixedly mounted on second steel wire rope, outer end be connected to six pieces fan-shaped below；Six described steel wire rope pintle hook locks by locked for the inner of six second connecting rods on second steel wire rope, the second described rope fairlead and the second pilot pin combined effect, second steel wire rope is made to be longitudinally arranged along the respective backbar of the six roots of sensation the second backbar assembly, the second described planetary gear and the second centre wheel are meshed, and the second planetary gear and the second rope sheave are arranged on the six roots of sensation the second backbar assembly by bearing pin.

The present invention is further, and described positive dodecagon desktop lifting mechanism, including clutch disk, first left cam path, the first cam pack, positive 12 jiaos of desktop fulcrums, desktop underframe, the first right cam path, lower spindle guide set, Cortex Cinnamomi Tamalae plate, internal axle sleeve, thrust bearing, two first backbar bearing pins, adapter sleeve, two split pins, cam path connecting bolt and nut assembly, two first cam bearing pins；Described positive dodecagon desktop is fixing with clutch disk to be connected, described adapter sleeve is welded on clutch disk, two described split pins are connected fixing to positive 12 jiaos of desktop fulcrums and adapter sleeve, two described first backbar bearing pins are in the axial groove G1 of internal axle sleeve, in the axial groove G2 of positive 12 jiaos of desktop fulcrums, making to move to axial when internal axle sleeve and positive 12 jiaos of desktop fulcrum, two described first cam bearing pins are connected fixing to the first cam pack and positive 12 jiaos of desktop fulcrums；The roller of the first described cam pack left end is in the first left cam path, and the roller of the first cam pack right-hand member is in the first right cam path；The first described left cam path is connected by cam path connecting bolt is fixing with nut assembly and desktop underframe, the first described right cam path is connected by cam path connecting bolt is fixing with nut assembly and desktop underframe, described positive 12 jiaos of desktop fulcrums are connected with lower spindle guide set, installed thrust bearing between described positive 12 jiaos of desktop fulcrums and ground, described lower spindle guide puts out three uniform axial groove G3, three uniform axial groove G3 innner and outer ends of inner insertion of described Cortex Cinnamomi Tamalae plate contact with desktop underframe, make lower spindle guide set be positioned；Described positive dodecagon desktop can relatively rotate relative to the central axis of desktop, and the first left cam path, the first right cam path constraint under move to axial.

The present invention is further, and described pentagon desktop lifting mechanism, including the six roots of sensation the first backbar assembly, 12 jiaos of desktop fulcrums, annulus frame bottom desktop, lower spindle guide set, Cortex Cinnamomi Tamalae plate, the second left cam path, the second cam pack, second right cam path, internal axle sleeve, thrust bearing, first block set, two first backbar bearing pins, pentagon desktop Assembly of pin, cam path connecting bolt and nut assembly, two second cam bearing pins；Six pieces of described pentagon desktops are connected with the six roots of sensation the first backbar assembly by pentagon desktop Assembly of pin；First block set, the six roots of sensation the first backbar assembly, 12 jiaos of desktop fulcrums are coupled together by two described first backbar bearing pins with internal axle sleeve；Two described first backbar bearing pins are in the axial groove G1 of internal axle sleeve, the axial groove G2 of positive 12 jiaos of desktop fulcrums and the hole of the first block set, simultaneously in the hole that the six roots of sensation the first backbar assembly is inner, internal axle sleeve, positive 12 jiaos of desktop fulcrums, six pieces of pentagon desktops are made to move to axial when rotating；Two described second cam bearing pins are connected fixing to the second cam pack and internal axle sleeve, the roller of the second described cam pack left end is in the second left cam path, the roller of the second described cam pack right-hand member is in the second right cam path, the second described left cam path is connected by cam path connecting bolt is fixing with nut assembly and desktop underframe, the second described right cam path is connected by cam path connecting bolt is fixing with nut assembly and desktop underframe, six pieces of described uniform pentagons can relatively rotate relative to the central axis of desktop and at the second left cam path, can move to axial under the constraint of the second right cam path.

The present invention is further, six pieces of described fan-shaped desktops are connected by fan-shaped desktop Assembly of pin and the second backbar assembly, the second described backbar assembly connects by 12 backbar bearing pins and the second block set are fixing, the second described block set is connected with the second centre wheel, when desktop becomes small size desktop from large scale desktop, fan-shaped desktop rotates, and inwardly radially moves；When desktop becomes large scale desktop from small size desktop, fan-shaped desktop rotates, and outwards radially moves.

The present invention is further, the second described centre wheel vertical direction has two groups of constraint carriage assemblys, including gear constraint bearing, gear constraint right support and gear constraint left socle；The second described centre wheel is by gear constraint bearings, described gear constraint bearing is supported by gear constraint right support and gear constraint left socle, described gear constraint left socle is connected by two left socle attachment screws and annulus frame bottom desktop are fixing, described gear constraint right support is connected by two right support attachment screws and annulus frame bottom desktop are fixing, two described right support attachment screws and two pieces of right support contiguous blocks are threaded, two described left socle attachment screws, two pieces of left socle contiguous blocks are threaded.

The present invention is further, the second centre wheel and the first centre wheel sound shifter when being additionally provided with rotation with lifting, and this mechanism includes cam ring, interior roller bearing pin, interior roller, three axostylus axostyles, outer roller bearing pin, outer roller, external cam, external cam bearing, associate bearing pin, gear pole and external cam positioning sleeve；Described gear pole connects first bearing pin by gear, gear connects second bearing pin and is fixedly connected on the second centre wheel, described gear pole connects with revolute pair by associating bearing pin and three axostylus axostyles, three described axostylus axostyles install interior roller by interior roller bearing pin, three described axostylus axostyles install outer roller by outer roller bearing pin, the 4th backbar of the first bearing pin and beam 2 that described cam ring is connected by cam ring is connected, the 5th backbar of the second bearing pin and beam 2 that described cam ring is connected by cam ring is connected, described interior roller is at the circular arc portion of cam ring, described outer roller is in the T2 groove of external cam, it is outside that described external cam bearing is welded on external cam, described locating rack connecting bolt is through the hole on external cam positioning sleeve, hole in external cam, external cam is fixed by the hole on desktop underframe and locating rack attaching nut jointly；When the second backbar assembly 30 rotates clockwise in the interval of 0 ° to 107 °, the second described centre wheel remains static；When the second backbar assembly rotates clockwise in the interval of 107 ° to 137 °, groove T1 on cam ring promotes interior roller, outer roller leaves the groove T2 of external cam, by three axostylus axostyles, association bearing pin, gear pole, gear connects first bearing pin, gear connects second bearing pin and drives the second centre wheel to rotate clockwise, and the second described centre wheel and the second backbar component synchronization rotate；When the second centre wheel remains static, corresponding six pieces of pentagon desktops, six pieces of fan-shaped desktops are to the external expansion of desktop-centric, when the second centre wheel is in and rotates clockwise state, positive dodecagon desktop two height of table top of rising, six pieces of pentagon desktops one height of table top of rising, when the second backbar assembly 30 rotates counterclockwise in the interval of 137 ° to 107 °, described interior roller is in the groove T1 of cam ring, outer roller is on the circular arc of external cam, the second described centre wheel is in synchronous axial system state counterclockwise, corresponding positive dodecagon two height of table top of decline, six pieces of pentagon desktops one height of table top of decline, when the second backbar assembly 30 rotates counterclockwise in the interval of 107 ° to 0 °, described outer roller enters in the groove T2 of external cam, described interior roller enters on the circular arc of cam ring, second centre wheel is locked, corresponding six pieces of pentagon desktops, six pieces of fan-shaped desktops shrink to desktop-centric.

The present invention is further, the first described cam pack includes two first roller bearing pins, two the first poles, first block set, first seat cushion, bearing pin in two first, first roller, 12 jiaos of desktop fulcrums, two first cam bearing pins, the first described roller and the first roller bearing pin are for being rotationally connected, the first described roller bearing pin is fixedly mounted in the hole of the first pole, in described first, the outer end of bearing pin is fixedly mounted in the hole of the first pole, in described first, the inner of bearing pin is fixedly mounted in the hole of the first seat cushion, the first described seat cushion is fixedly mounted in the hole of the first block set, the first described block set is by the first cam bearing pin and 12 jiaos of fixing connections of desktop fulcrum.

Compared with prior art, size of desktop of the present invention can be changed as required, and when desktop is large scale desktop, desktop is made up of 13 blocks of plates altogether, and middle one piece is dodecagon, can in height lift 2 height of table top, now in a high position；Edge is uniformly distributed 6 pieces of pentagon plate faces, can in height lift 1 height of table top, now in a high position；Edge is also uniformly distributed 6 pieces of fanning strip faces, does not highly change；Each pentagon plate face and each alternate layout in fanning strip face.When desktop becomes small size desktop from large scale desktop, both hands are held the fan-shaped desktop of close two piece and are rotated counterclockwise, now, positive dodecagon, 6 pieces of pentagons and 6 pieces of fan-shaped synchronous axial system, corner is identical, and at corner from the scope of 0 ° to 30 °, positive dodecagon declines 2 height of table top, 6 pieces of pentagons 1 height of table top of decline, 6 pieces of sectors do not decline；At corner from the scope of 30 ° to 137 °, positive dodecagon and 6 pieces of pentagons only rotate and do not decline, and 6 pieces of pentagons move to center in intermediate layer, ultimately form sexfoil, and 6 pieces of sectors move to center in top, ultimately form approximate circle desktop.When desktop becomes large scale desktop from small size desktop, both hands are held the fan-shaped desktop of close two piece and are rotated clockwise, now, positive dodecagon, 6 pieces of pentagons and 6 pieces of sectors rotate simultaneously, corner is identical, at corner from the scope of 0 ° to 107 °, 6 pieces of sectors are Tong Bu with 6 pieces of pentagons expands outward to large scale desktop along the line of symmetry respectively through the center of circle, at corner from the scope of 107 ° to 137 °, positive dodecagon 2 height of table top of rising, 6 pieces of pentagons 1 height of table top of rising, a complete desktop is formed.Therefore when less than 6 people, small table surface can be converted to use, when close to 12 people, desktop can be converted to larger round table, the conversion of size of desktop is by two pieces of fan-shaped realizations non-conterminous on people's rotary desktop, it is possible to solve at least two group human needs in library, meeting room, dining room, family.

Accompanying drawing explanation

Fig. 1 is the top view of the large table surface size that two kinds of Desktop Dimensions of the present invention are freely changed；

Fig. 2 is the top view of the small table surface size that two kinds of Desktop Dimensions are freely changed；

Fig. 3 is the top view that in two kinds of Desktop Dimensions, six pieces of pentagon desktops are shrunk to sexfoil；

Fig. 4 is the top view of positive dodecagon desktop in two kinds of Desktop Dimensions；

Fig. 5 is the top view that in two kinds of Desktop Dimensions, six pieces of pentagon desktops inside contract abduction mechanism；

Fig. 6 is the mechanism principle figure that in two kinds of Desktop Dimensions, six pieces of pentagon desktops inside contract abduction transmission；

Fig. 7 is the mechanism principle figure that in two kinds of Desktop Dimensions, six pieces of fan-shaped desktops inside contract abduction transmission；

Fig. 8 is the top view that in two kinds of Desktop Dimensions, six pieces of fan-shaped desktops inside contract abduction mechanism；

Fig. 9 is the front view of 12 jiaos of desktop two the desktop thickness of lifting in center of two kinds of Desktop Dimensions；

Figure 10 is the front view of six pieces of uniform pentagon one desktop thickness of lifting in two kinds of Desktop Dimensions；

Figure 11 is the front view of six pieces of fan-shaped desktop support parts in two kinds of Desktop Dimensions；

Figure 12 is the front view of three groups of desktop displacements and two groups of lifter cam mechanisms and frame in two kinds of Desktop Dimensions；

Figure 13 is the front view that in two kinds of Desktop Dimensions, the second centre wheel obtains two carriage assembly constraints in the vertical direction；

Figure 14 is the B B half-twist view that in two kinds of Desktop Dimensions, the second centre wheel obtains two carriage assembly constraints in the vertical direction；

Figure 15 is the top view of two pack supports and two set Planetary Gear Transmission phase relations in two kinds of Desktop Dimensions；

Figure 16 a is the front view of beam one first backbar contiguous block, and Figure 16 b is the left view of beam one first backbar contiguous block, and Figure 16 c is the top view of beam one first backbar contiguous block；

Figure 17 a is the front view of the first block set part, and Figure 17 b is the top view of the first block set part；

Figure 18 a is the front view of gangbar, and Figure 18 b is the left view of gangbar；

Figure 19 a is the front view of beam two contiguous block, and Figure 19 b is the left view of beam two contiguous block, and Figure 19 c is the top view of beam two contiguous block；

Figure 20 is the component drawings of beam one six roots of sensation backbar, beam one first backbar inner sleeve, beam one first backbar guiding bearing pin, beam one first backbar fairlead；

Figure 21 is the part drawing of the first rope fairlead；

Figure 22 is the part drawing of the second rope fairlead；

Figure 23 is the front view of the first cam pack；

Figure 24 is the top view of the first cam pack；

Figure 25 is the front view of the second cam pack；

Figure 26 is the top view of the second cam pack；

Figure 27 is the front view of arc-shaped cam assembly；

Figure 28 is the top view of arc-shaped cam assembly；

Figure 29 is the view of Figure 27 middle section A-A；

Figure 30 is the view of Figure 27 middle section B B and C C；

Figure 31 is the left view expanded view that expanded view and the first right cam path are looked in the right side of the first left cam path；

Figure 32 is the left view expanded view that expanded view and the second right cam path are looked in the right side of the second left cam path；

Figure 33 is that desktop rotates the front view of second centre wheel the 24, first centre wheel 6 sound shifter during with lifting；

Figure 34 be desktop when rotating with lifting second centre wheel the 24, first centre wheel 6 remain static mechanism's top view of starting point；

Figure 35 is that desktop rotation remains static end point with second centre wheel the 24, first centre wheel 6 when lifting and starts the mechanism's top view rotated；

Figure 36 is that desktop rotation turns to mechanism's top view of 15 ° of positions with second centre wheel the 24, first centre wheel 6 when lifting；

Figure 37 is that desktop rotation turns to mechanism's top view of 30 ° of positions with second centre wheel the 24, first centre wheel 6 when lifting；

Figure 38 is the restrained motionless component drawings of external cam；

Figure 39 be in Figure 38 A A to cross sectional view；

Figure 40 is the part drawing of external cam positioning sleeve；

Figure 41 is the front view of pentagon desktop；

Figure 42 is the top view of pentagon desktop；

Figure 43 is the A direction view in Figure 41；

Figure 44 is the B direction view in Figure 42 and Figure 43；

Figure 45 is C C in Figure 44 to sectional view；

Figure 46 is the front view of fan-shaped desktop；

Figure 47 is the part top view of fan-shaped desktop；

Figure 48 is the A direction view in Figure 46；

Figure 49 is the B direction view in Figure 47 and Figure 48；

Figure 50 is that the C C of Figure 48 is to sectional view；

Figure 51 is the front view of positive dodecagon desktop；

Figure 52 is the A direction view in Figure 51；

Figure 53 is C C in Figure 52 to sectional view；

Figure 54 is the front view of clutch disk；

Figure 55 is the front view of gear pole；

Figure 56 is the top view of gear pole；

Figure 57 is the front view of three axostylus axostyles；

Figure 58 is the top view of three axostylus axostyles；

Figure 59 a is pentagon desktop slideway structure front view, and Figure 59 b is pentagon desktop slideway structure left view；

Figure 60 is that six pieces of pentagon desktops are inside contracted the outer mechanism's front view rising and driving；

Figure 61 is the A A direction view in Figure 61；

Figure 62 a is fan-shaped desktop support part-structure front view, and Figure 62 b is fan-shaped desktop support part-structure left view；

Figure 63 is that six pieces of fan-shaped desktops are inside contracted the outer mechanism's front view rising and driving；

Figure 64 is the A A direction view in Figure 63；

Figure 65 a is pentagon desktop base plate and support set annexation front view, and Figure 65 b is pentagon desktop base plate and support set annexation top view；

Figure 66 a is sector base plate and support set structural front view, and Figure 66 b is sector base plate and support set structure top view；

Detailed description of the invention

Below in conjunction with accompanying drawing, the invention will be further described.

The round table that two kinds of Desktop Dimensions of a kind of library as shown in Figure 1 to Figure 2 are freely changed, the tabletop section being made up of the positive dodecagon desktop 2 of six pieces of pentagon desktops 1, a piece and six pieces of fan-shaped desktops 3, and make tabletop section carry out the shifter of size conversion；When large table surface size, including six pieces of pentagon desktops 1, one piece of positive dodecagon 2, six pieces of fan-shaped desktops 3, their border contacts each other, forms large table surface size, when small table surface size, it includes six pieces of fan-shaped desktops 3, and their border contacts each other, forms small table surface size.

In conjunction with as shown in Figure 3 to Figure 4, when when small table surface size, six pieces of pentagons 1 are shrunk to sexfoil to desktop-centric, and move down the height of a desktop, being positioned at the underface of small table surface, positive dodecagon moves down the height of two desktops, is positioned at the underface of sexfoil, look down from top, up, positive dodecagon 2 is in lower section, and six pieces of pentagons 1 are in centre for six pieces of fan-shaped desktops 3, in the height direction, three has the gap of about 0.5mm each other；

In conjunction with such as Fig. 5, Fig. 6, shown in Figure 60 and Figure 61, above-mentioned six pieces of pentagon desktops inside contract abduction mechanism, including the first row star-wheel 4, first rope sheave 5, first centre wheel 6, the six roots of sensation the first backbar assembly 7, steel cable 8, first connecting rod 9, six the first outer rope sheaves 10, the outer Assembly of pin 11 of the six roots of sensation first, six pentagon base plates 11 1, 30 attachment screws 11 2, six support sets 11 3, six attaching nuts 11 4, six locking nuts 11 5, six lock-screws 11 6, pentagon glide path 12, six roots of sensation pentagon external support axle 13, the outer rope sheave bearing pin 14 of the six roots of sensation, six steel wire rope pintle hook locks 15, supporting axle 16 in six roots of sensation pentagon, steel wire rope guide wheel 17, first pilot pin 18, wherein A1, A2, A3, A4, A5, A6 is the direction that steel cable 8 drives six pieces of pentagon 1 abduction exercises, when A1～A6 adverse movement, steel cable 8 drives six pieces of pentagon desktops 1 to inside contract motion, they achieve and shorten sexfoil and six pieces of ingredients that abduction is large table surface size in six pieces of pentagon desktops 1 into, the bottom surface fixed installation pentagon glide path 12 of six pieces of pentagon desktops 1, six roots of sensation pentagon external support axle 13, in six roots of sensation pentagon, supporting axle 16 is respectively and fixedly installed in the hole of the six roots of sensation the first backbar assembly 7, the cylinder of six roots of sensation pentagon external support axle 13 upper end, in six roots of sensation pentagon, the cylinder of supporting axle 16 upper end can radially slide in pentagon glide path 12, six described the first outer rope sheaves 10 are separately constituted be rotationally connected by the outer rope sheave bearing pins 14 of the six roots of sensation and the six roots of sensation the first backbar assembly 7, described steel cable 8 is arranged on six the first outer rope sheaves 10, six locking nuts 11 5 are passed through in the inner of described first connecting rod 9, six lock-screws 11 6 are fixedly mounted on steel cable 8, the outer end of six described first connecting rods 9 is locked through six support sets 11 3 by six attaching nuts 11 4, six described support sets 11 3, six pentagon base plates 11 1 are connected to below six pieces of pentagons 1 by 30 attachment screws 11 2, six described steel wire rope pintle hook locks 15 are by locked on steel cable 8 for the inner of six first connecting rods 9, described steel wire rope guide wheel 17 and the first pilot pin 18 combined effect, steel cable 8 is made to be longitudinally arranged along the respective backbar of the six roots of sensation the first backbar assembly 7, described the first row star-wheel 4 and the first rope sheave 5 are arranged on the six roots of sensation the first backbar assembly 7 by bearing pin, in six pieces of pentagon 1 abductions or the process that inside contracts, first centre wheel 6 is fixed about the vertical axis of desktop-centric, when six pieces of pentagons 1 in height lift 1 height of table top, first centre wheel 6 is freely rotatable about the vertical axis of desktop-centric, as shown in Figure 6, if the angular velocity of the first row star-wheel 4 is ω 4, the angular velocity of the first rope sheave 5 is ω 5, ω 4=ω 5, first backbar assembly 7 is the tie-rod of this Gear Planet Transmission, angular velocity is ω 7, the angular velocity of the first centre wheel 6 is ω 6, within the time of Δ t, first backbar assembly 7, the first row star-wheel 4, gear ratio relation between first centre wheel 6 isWhen the first centre wheel 6 by fixing time, i.e. ω 6=0, then (ω₄-ω₇)/(0-ω₇)=-4, ω₄-ω₇=4 ω₇, ω₄Δt-ω₇Δ t=4 ω₇Δ t,Show that the first row star-wheel 4 is 4 φ 7 relative to the relative rotation of the first backbar assembly 7, 4 φ 7 are for the zoom action of desktop, 4 φ 7 are multiplied by the radius of the first rope sheave 5 and obtain displacement, this displacement drive steel cable 8, again through first connecting rod 9, first outer Assembly of pin 11, steel wire rope pintle hook lock 15, pentagon glide path 12 drives pentagon 1 inwardly or outwardly relative movement, when the first centre wheel 6, when first backbar assembly 7 corner is identical, 4 ω 6 ω 7=ω 4 ω 7=0, i.e. ω 4=ω 7, φ 4=φ 7, the first row star-wheel 4 is connected for fixing with the first rope sheave 5, the first row star-wheel 4 and the first backbar assembly 7 synchronous axial system, steel cable 8 is without relative motion, desktop is without zoom action, the corresponding positive dodecagon desktop 2 of this state lifts the motion of two height of table top and six pieces of pentagons 1 and lifts the motion of a height of table top；

In conjunction with such as Fig. 7, Fig. 8, shown in Figure 62, six pieces of described fan-shaped desktops inside contract abduction mechanism, including, six roots of sensation sector desktop moves guide groove 19, second connecting rod 20, six the second outer rope sheaves 21, the outer bearing pin 22 of the six roots of sensation second, six locking pin 22-1, second rope sheave 23, second centre wheel 24, the outer rope sheave bearing pin 25 of the six roots of sensation, six roots of sensation sector external support axle 26, six sectors use base plate 26-1, 42 attachment screw 26-2, six support set 26-3, six attaching nuts 26 4, six locking nut 26-5, six lock-screw 26-6, six steel wire rope pintle hook locks 27, supporting axle 28 in six roots of sensation sector, second steel wire rope 29, second backbar assembly 30, second pilot pin 31, second planetary gear 32, second rope fairlead 65；Wherein B1, B2, B3, B4, B5, B6 is the direction that second steel wire rope 29 drives six pieces of fan-shaped desktop 3 abduction exercises, when B1～B6 adverse movement, second steel wire rope 29 drives six pieces of fan-shaped desktops 3 to inside contract motion, they achieve six pieces of fan-shaped desktops 3 and inside contract small table surface and six pieces of ingredients that abduction is large table surface size, the bottom surface fixed installation six roots of sensation sector desktop of six pieces of described fan-shaped desktops 3 moves guide groove 19, described six roots of sensation sector external support axle 26, in six roots of sensation sector, supporting axle 28 is respectively and fixedly installed in the hole of the six roots of sensation the second backbar assembly 30, the cylinder of described six roots of sensation sector external support axle 26 upper end, in six roots of sensation sector, the cylinder of supporting axle 28 upper end can move at six roots of sensation sector desktop and radially slide in guide groove 19, six described the second outer rope sheaves 21 are separately constituted be rotationally connected by the outer bearing pins 22 of the six roots of sensation second and the six roots of sensation the second backbar assembly 30, second described steel wire rope 29 is arranged on six the second rope sheaves 23, six locking nut 26-5 are passed through in the inner of described second connecting rod 20, six lock-screw 26-6 are fixedly mounted on second steel wire rope 29, the outer end of six described second connecting rods 20 is locked through six support set 26-3 by six attaching nuts 26 4, six described support set 26-3, six fan-shaped desktop base plate 26-1 are connected to below six pieces of sectors 3 by 42 attachment screw 26-2, six described steel wire rope pintle hook locks 27 by locked for the inner of six second connecting rods 20 on second steel wire rope 29, the second described rope fairlead 65 and the second pilot pin 31 combined effect, second steel wire rope 29 is made to be longitudinally arranged along the respective backbar of the six roots of sensation the second backbar assembly 30, the second described planetary gear 32 and the second rope sheave 23 are arranged on the six roots of sensation the second backbar assembly 30 by bearing pin, in six pieces of sector 3 abductions or the process that inside contracts, second centre wheel 24 is fixed about the vertical axis of desktop-centric, six pieces of sectors 3 are in height without lifting, only relatively move at radial direction, second centre wheel 24 can do freely rotatable about the vertical axis of desktop-centric, as shown in Figure 7, if the angular velocity of the second planetary gear 32 is ω 32, the angular velocity of the second rope sheave 23 is ω 23, ω 32=ω 23, second backbar assembly 30 is the tie-rod of this Gear Planet Transmission, angular velocity is ω 30, the angular velocity of the second centre wheel 24 is ω 24, within the time of Δ t, second backbar assembly 30, second planetary gear 32, gear ratio relation between second centre wheel 24 isWhen the second centre wheel 24 by fixing time, i.e. ω 24=0, then (ω₃₂-ω₃₀)/(0-ω₃₀)=-4, ω₃₂-ω₃₀=4 ω₃₀, ω₃₂Δt-ω₃₀Δ t=4 ω₃₀Δ t,Show that the second planetary gear 32 is 4 φ 30 relative to the relative rotation of the second backbar assembly 30, 4 φ 30 are for the zoom action of desktop, 4 φ 30 are multiplied by the radius of the second rope sheave 23 and obtain displacement, second steel wire rope 29 of this displacement drive, again through second connecting rod 20, second outer bearing pin 22, steel wire rope pintle hook lock 27, fan-shaped desktop moves guide groove 19 and drives fan-shaped 3 inwardly or outwardly relative movements, when the second centre wheel 24, when second backbar assembly 30 corner is identical, 4 ω 24 ω 30=ω 32 ω 30=0, i.e. ω 32=ω 30, φ 32=φ 30, second planetary gear 32 is connected for fixing with the second rope sheave 23, second planetary gear 32 and the second backbar assembly 30 synchronous axial system, second steel wire rope 29 is without relative motion, desktop is without zoom action, the corresponding positive dodecagon desktop 2 of this state lifts the motion of two height of table top and six pieces of pentagon desktops 1 and lifts the motion of a height of table top；

In conjunction with as shown in Figure 9, the positive dodecagon desktop lifting mechanism in described center, lift two desktop thickness H1, including clutch disk 33, eight screws 34, first left cam path 35, first cam pack 36, positive 12 jiaos of desktop fulcrums 37, desktop underframe 38, first right cam path 39, lower spindle guide set 40, Cortex Cinnamomi Tamalae plate 41, internal axle sleeve 46, thrust bearing 47, two first backbar bearing pins 52, adapter sleeve 53, two split pins 54, cam path connecting bolt and nut assembly 62, two first cam bearing pins 63, described positive dodecagon 2 is driven, when desktop becomes small size desktop from large scale desktop, at corner counterclockwise from the scope of 0 ° to 30 °, positive dodecagon two height of table top of decline, at corner counterclockwise from the scope of 30 ° to 137 °, positive dodecagon desktop only rotates and does not lift, when desktop becomes large scale desktop from small size desktop, at corner clockwise from the scope of 0 ° to 107 °, positive dodecagon desktop only rotates and does not lift, at corner clockwise from the scope of 107 ° to 137 °, positive dodecagon is two height of table top of rising while rotating, described positive dodecagon 2 is connected by eight screws 34 are fixing with clutch disk 33, described adapter sleeve 53 is welded on clutch disk 33, two described split pins 54 are connected fixing with adapter sleeve 53 for positive 12 jiaos of desktop fulcrums 37, two described first backbar bearing pins 52 are in the axial groove G1 of internal axle sleeve 46, also in the axial groove G2 of positive 12 jiaos of desktop fulcrums 37, so that internal axle sleeve 46 and positive 12 jiaos of desktop fulcrums 37 can rotate and can move to axial simultaneously, two described first cam bearing pins 63 are connected fixing with positive 12 jiaos of desktop fulcrums 37 for the first cam pack 36, the roller of the first described cam pack 36 left end is in the first left cam path 35, the roller of the first described cam pack 36 right-hand member is in the first right cam path 39, the first described left cam path 35 is connected by cam path connecting bolt and nut assembly 62 are fixing with desktop underframe 38, the first described right cam path 39 is connected by cam path connecting bolt and nut assembly 62 are fixing with desktop underframe 38, described positive 12 jiaos of table shape face fulcrums 37 are rotationally connected with lower spindle guide set 40 composition, installed thrust bearing 47 between described positive dodecagon desktop fulcrum 37 and ground, three uniform axial groove G3 opened by described lower spindle guide set 40, the inner of described Cortex Cinnamomi Tamalae plate 41 inserts in three uniform axial groove G3, outer end contacts with desktop underframe 38, lower spindle guide set 40 is made to be positioned；Described positive dodecagon desktop 2 can relatively rotate relative to the central axis of desktop and can move to axial under the constraint of first left cam path the 35, first right cam path 39, and the distance of movement is H1.

In conjunction with as shown in Figure 10, six pieces of described pentagon desktop lifting mechanisms, lift a desktop thickness H2, including the six roots of sensation the first backbar assembly 7, 12 jiaos of desktop fulcrums 37, annulus frame 38 bottom desktop, lower spindle guide set 40, Cortex Cinnamomi Tamalae plate 41, second left cam path 42, second cam pack 43, second right cam path 45, internal axle sleeve 46, thrust bearing 47, first block set 51, two first backbar bearing pins 52, pentagon desktop Assembly of pin 58, cam path connecting bolt and nut assembly 62, two second cam bearing pins 64, six pieces of described pentagon desktops 1 are driven, when desktop becomes small size desktop from large scale desktop, at corner counterclockwise from the scope of 0 ° to 30 °, six pieces of pentagons 1 decline a height of table top, at corner counterclockwise from the scope of 30 ° to 137 °, 1 rotation of six pieces of pentagon desktops does not lift, when desktop becomes large scale desktop from small size desktop, at corner clockwise from the scope of 0 ° to 107 °, 1 rotation of six pieces of pentagons does not lift, at corner clockwise from the scope of 107 ° to 137 °, six pieces of pentagons 1 one height of table top of rising while rotating, described six pieces of pentagons 1 are connected with the six roots of sensation the first backbar assembly 7 by pentagon desktop Assembly of pin 58, two described first backbar bearing pins 52 are by the first block set 51, the six roots of sensation the first backbar assembly 7, 12 jiaos of desktop fulcrums 37 couple together with internal axle sleeve 46, two described first backbar bearing pins 52 are in the axial groove G1 of internal axle sleeve 46, also in the axial groove G2 of positive 12 jiaos of desktop fulcrums 37, simultaneously in the hole of the first block set 51, also in the hole of the six roots of sensation the first backbar assembly 7 the inner, so that internal axle sleeve 46, positive 12 jiaos of desktop fulcrums 37, six pieces of pentagons 1 can rotate simultaneously and can move to axial, two described second cam bearing pins 64 are connected fixing with internal axle sleeve 46 for the second cam pack 43, the roller of the second described cam pack 43 left end is in the second left cam path 42, the roller of the second described cam pack 43 right-hand member is in the second right cam path 45, the second described left cam path 42 is connected by cam path connecting bolt and nut assembly 62 are fixing with desktop underframe 38, the second described right cam path 45 is connected by cam path connecting bolt and nut assembly 62 are fixing with desktop underframe 38, six pieces of described uniform pentagons 1 can relatively rotate relative to the central axis of desktop and at the second left cam path 42, can move to axial under the constraint of the second right cam path 45, the distance of movement is H2.

In conjunction with as shown in figure 11, six pieces of described fan-shaped height of table top are without lifting, its support section has the second centre wheel 24, second backbar assembly 30, 12 jiaos of desktop fulcrums 37, desktop underframe 38, lower spindle guide set 40, article three, location gusset 41, outer shaft 46, thrust bearing 47, second block set 50, fan-shaped desktop Assembly of pin 57, two constraint bearing pins 59, second rope fairlead 65, 12 backbar bearing pins 82, six pieces of described fan-shaped desktops 3 are connected with the second backbar assembly 30 by fan-shaped desktop Assembly of pin 57, the second described backbar assembly 30 is connected by 12 backbar bearing pins 82 are fixing with the second block set 50, the second described block set 50 and the second centre wheel 24 composition are rotationally connected, when desktop becomes small size desktop from large scale desktop, fan-shaped desktop only rotates, inwardly radially move, without lifting, when desktop becomes large scale desktop from small size desktop, fan-shaped desktop only rotates, outwards radially move, without lifting.

In conjunction with as shown in figure 12, three groups of described desktop displacements and two groups of lifter cam mechanisms and frame, including the second backbar assembly 30, beam two gear support bearing pin 30-11, beam two gear connecting key 30-12, beam two gear lock pin 30-13, second planetary gear 32, clutch disk 33, six roots of sensation screw 34, first left cam path 35, first cam 36, positive dodecagon fulcrum 37, desktop underframe 38, lower spindle guide set 40, Cortex Cinnamomi Tamalae plate 41, second left cam path 42, second cam 43, first rope fairlead 44, thrust bearing 47, bearing pin 48, key 49, second block set 50, first block set 51, two first backbar bearing pins 52, adapter sleeve 53, two split pins 54, gangbar 55, three set bars 56, fan-shaped desktop Assembly of pin 57, pentagon desktop Assembly of pin 58, two constraint bearing pins 59, gear locating rack assembly 60, two locating rack connecting bolts and nut 61, two cam path connecting bolts and nut assembly 62, two first cam bearing pins 63, two second cam bearing pins 64, second rope fairlead 65, 12 backbar bearing pins 82, six pieces of described pentagon desktops 1 lift a desktop thickness H2, the positive dodecagon desktop 2 in described center lifts two desktop thickness H1, six pieces of described fan-shaped desktop 3 height are without lifting；The first described rope sheave 5 is connected by bearing pin 48 is fixing with the first backbar assembly 7, described the first row star-wheel 4 is connected with the first rope sheave 5 by key 49, described the first row star-wheel 4 is meshed with the first centre wheel 6, described steel cable 8 is pressed on the first rope sheave 5, the first described centre wheel 6 is connected by two constraint bearing pins 59 are fixing with the second centre wheel 24, the second described block set 50 is rotationally connected with the first row star-wheel 4 composition, the second described backbar assembly 30 is connected by backbar bearing pin 82 is fixing with the second block set 50, the first described backbar assembly 7 is connected by the first backbar bearing pin 52 is fixing with the first block set 51, the second described rope fairlead 65 and the second centre wheel 24 composition are rotationally connected, the second described rope sheave 23 is by beam two gear support bearing pin 30-11 and the second fixing connection of backbar assembly 30, the second described planetary gear 32 is connected with beam two gear support bearing pin 30-11 by beam two gear connecting key 30-12, described beam two gear lock pin 30-13 is arranged on beam two gear support bearing pin 30-11, the second described planetary gear 32 is meshed with the second centre wheel 24, second described steel wire rope 29 is pressed on the second rope sheave 23, described gear locating rack assembly 60 is to realize the second fixing a part of structure fixing with releasing of centre wheel 24.

In conjunction with such as shown in Figure 13 to Figure 14, two carriage assemblys of described constraint the second centre wheel 24 movement in vertical direction, including gear constraint bearing 66, gear constraint right support 67, two right support attachment screws 67 1, two pieces of right support contiguous blocks 67 2, right support tie-beam 67 3, gear constraint left socle 68, two left socle attachment screws 68 1, two pieces of left socle contiguous blocks 68 2, left socle tie-beam 68 3, the second described centre wheel 24 is supported by gear constraint bearing 66, described gear constraint bearing 66 is supported by gear constraint right support 67 and gear constraint left socle 68, described gear constraint left socle 68 is by two left socle attachment screws 68 1, two pieces of left socle contiguous blocks 68 2, left socle tie-beam 68 3 forms, it is connected by two described left socle attachment screws 68 1 are fixing with annulus frame bottom desktop 38, described gear constraint right support 67 is by two right support attachment screws 67 1, two pieces of right support contiguous blocks 67 2, right support tie-beam 67 3 forms, it is connected by two described right support attachment screws 67 1 are fixing with annulus frame bottom desktop 38, two described right support attachment screws 67 1 with two pieces of right support contiguous blocks 67 2 for threadeding, two described left socle attachment screws 68 1, two pieces of left socle contiguous blocks 68 2 are threaded.

In conjunction with such as shown in Figure 15 to Figure 22, the phase relation of two described pack supports and two set Planetary Gear Transmissions, it includes the six roots of sensation the first backbar assembly 7, one first, beam backbar 7-1, second, a beam backbar 7-2, the 3rd backbar 7-3 of a beam, the 4th backbar 7-4 of one beam, one beam the first backbar outer sleeve 7-5, the 5th backbar 7-6 of a beam, beam the first backbar contiguous block 7-7；One beam six roots of sensation backbar 7-8, one beam the first backbar inner sleeve 7-9, one beam the first backbar guiding bearing pin 7-10, one beam the first backbar fairlead 7-11, second backbar assembly 30, two first, beam backbar 30-1, two second, beam backbar 30-2, the 3rd backbar 30-3 of two beams, the 4th backbar 30-4 of two beams, the 5th backbar 30-5 of two beams, two beam inner sleeve 30-6, two beam guiding bearing pin 30-7, two beam fairlead 30-8, two beam six roots of sensation backbar 30-9, two beam contiguous block 30-10, two beam gear support bearing pin 30-11, two beam gear connecting key 30-12, two beam gear lock pin 30-13, first rope sheave 5, second rope sheave 23, bearing pin 48, second block set 50, first block set 51, gangbar 55, three set bar assemblies 56, link the first bearing pin 56-1, link the second bearing pin 56-2, link the 3rd bearing pin 56-3, the described six roots of sensation the first backbar assembly 7 is supported by the first block set 51, the second described backbar assembly 30 is supported by the second block set 50, described gangbar 55 and three set bar assemblies 56 are by the 4th backbar 30-4 of two beams, the 5th backbar 30-5 of two beams and the 4th backbar 7-4 of a beam couples together, the first described rope sheave 5 is connected by first backbar 7-1 of bearing pin 48 and a beam, the second described rope sheave 23 is connected by two beam gear support bearing pin 30-11, described beam the first backbar fairlead 7-11 is by beam the first backbar guiding bearing pin 7-10, one beam a first backbar inner sleeve 7-9 and beam six roots of sensation backbar 7-8 connects, two described beam fairlead 30-8 are by two beam guiding bearing pin 30-7, two beam inner sleeve 30-6 and two beam six roots of sensation backbar 30-9 connect, described linkage the first bearing pin 56-1, link the second bearing pin 56-2, the 3rd bearing pin 56-3 that links is fixing with gangbar 55 to be connected.

In conjunction with such as shown in Figure 23 to Figure 24, a kind of scheme of the present invention the first cam pack, including two first roller bearing pin 36-1, two the first pole 36-2, first block set 36-3, first seat cushion 36-4, bearing pin 36-5 in two first, first roller 36-6, 12 jiaos of desktop fulcrums 37, two first cam bearing pins 63, the first described roller 36-6 and the first roller bearing pin 36-1 is for being rotationally connected, the first described roller bearing pin 36-1 is fixedly mounted in the hole of the first pole 36-2, in described first, the outer end of bearing pin 36-5 is fixedly mounted in the hole of the first pole 36-2, in described first, the inner of bearing pin 36-5 is fixedly mounted in the hole of the first seat cushion 36-4, the first described seat cushion 36-4 is fixedly mounted in the hole of the first block set 36-3, the first described block set 36-3 is connected by the first cam bearing pin 63 is fixing with 12 jiaos of desktop fulcrums 37.

In conjunction with such as shown in Figure 25 to Figure 26, a kind of scheme of the present invention the second cam pack, including two second roller bearing pin 43-1, two the second pole 43-2, second block set 43-3, two the second seat cushion 43-4, bearing pin 43-5 in two second, second roller 43-6, internal axle sleeve 46, two second cam bearing pins 64, the first described roller 43-6 and the first roller bearing pin 43-1 is for being rotationally connected, the second described roller bearing pin 43-1 is fixedly mounted in the hole of the second pole 43-2, in described second, the outer end of bearing pin 43-5 is fixedly mounted in the hole of the second pole 43-2, in described second, the inner of bearing pin 43-5 is fixedly mounted in the hole of the second seat cushion 43-4, the second described seat cushion 43-4 is fixedly mounted in the hole of the second block set 43-3, the second described block set 43-3 is connected by the first cam bearing pin 64 is fixing with internal axle sleeve 46.

In conjunction with such as shown in Figure 27 to Figure 32, a kind of scheme of arc-shaped cam assembly of the present invention, including the first left cam path 35, desktop underframe 38, first right cam path 39, second left cam path 42, second right cam path 45, cam path connecting bolt 62-1, cam path attaching nut 62-2, the first described left cam path 35 is fixedly mounted on desktop underframe 38 by cam path connecting bolt 62-1 and cam path attaching nut 62-2, the first described right cam path 39 is fixedly mounted on desktop underframe 38 by cam path connecting bolt 62-1 and cam path attaching nut 62-2, the second described left cam path 42 is fixedly mounted on desktop underframe 38 by cam path connecting bolt 62-1 and cam path attaching nut 62-2, the second described right cam path 45 is fixedly mounted on desktop underframe 38 by cam path connecting bolt 62-1 and cam path attaching nut 62-2.

In conjunction with such as shown in Figure 33 to Figure 40, when desktop rotates with lifting, the second centre wheel 24 and the first centre wheel 6 have sound shifter, including the first centre wheel 6, second centre wheel 24, second backbar assembly 30, the 4th backbar 30-4 of beam 2, the 5th backbar 30-5 of beam 2, beam two contiguous block 30-10, desktop underframe 38, internal axle sleeve 46, second block set 50, two constraint bearing pins 59, locating rack connecting bolt 61-1, locating rack attaching nut 61-2, the first bearing pin 69-1 that cam ring connects, the second bearing pin 69-2 that cam ring connects, cam ring 70, interior roller bearing pin 71, interior roller 72, three axostylus axostyles 73, outer roller bearing pin 74, outer roller 75, external cam 76, external cam bearing 77, association bearing pin 78, gear pole 79, two rooted tooth wheel bearing pins 80, gear connects first bearing pin 80-1, gear connects second bearing pin 80-2, two back-up rings 81, 12 backbar bearing pins 82, external cam positioning sleeve 83, described gear pole 79 connects first bearing pin 80-1 by gear, gear connects second bearing pin 80-2 and is fixedly connected on the second centre wheel 24, described gear pole 79 is connected with revolute pair with three axostylus axostyles 73 by associating bearing pin 78, three described axostylus axostyles 73 install interior roller 72 by interior roller bearing pin 71, three described axostylus axostyles 73 install outer roller 75 by outer roller bearing pin 74, the 4th backbar 30-4 of the first bearing pin 69-1 and beam 2 that described cam ring 70 is connected by cam ring is connected, the 5th backbar 30-5 of the second bearing pin 69-2 and beam 2 that described cam ring 70 is connected by cam ring is connected, described interior roller 72 is at the circular arc portion of cam ring 70, described outer roller 75 is in the T2 groove of external cam 76, it is outside that described external cam bearing 77 is welded on external cam 76, described locating rack connecting bolt 61-1 is through the hole on external cam positioning sleeve 83, hole in external cam 76, external cam 76 is fixed by the hole on desktop underframe 38 and locating rack attaching nut 61-2 jointly, when the second backbar assembly 30 rotates clockwise in the interval of 0 ° to 107 °, the second described centre wheel 24 remains static, as shown in figure 34, when the second backbar assembly 30 rotates clockwise in the interval of 107 ° to 137 °, groove T1 on cam ring 70 promotes interior roller 72, outer roller 75 leaves the groove T2 of external cam 76, then, by three axostylus axostyles 73, association bearing pin 78, gear pole 79, gear connects first bearing pin 80-1, gear connects second bearing pin 80-2 and drives the second centre wheel 24 to rotate clockwise, the second described centre wheel 24 and the second backbar assembly 30 synchronous axial system, such as Figure 35, Figure 36, shown in Figure 37, Figure 35 show the second centre wheel 24 to start to rotate, Figure 36 show the second centre wheel 24 and turns to the position of 15 °, Figure 37 show the second centre wheel 24 and turns to the position of 30 °, when the second centre wheel 24 remains static, corresponding six pieces of pentagon desktops 1, six pieces of fan-shaped desktops 3 are to the external expansion of desktop-centric, when the second centre wheel 24 is in and rotates clockwise state, positive dodecagon 2 rises two height of table top, six pieces of pentagon desktops 1 rise a height of table top, when the second backbar assembly 30 rotates counterclockwise in the interval of 137 ° to 107 °, described interior roller 72 is in the groove T1 of cam ring 70, outer roller 75 is on the circular arc of external cam 76, the second described centre wheel 24 is in synchronous axial system state counterclockwise, such as Figure 37, shown in Figure 36, now, corresponding positive dodecagon 2 declines two height of table top, six pieces of pentagon desktops 1 decline a height of table top, when the second backbar assembly 30 rotates counterclockwise in the interval of 107 ° to 0 °, described outer roller 75 enters in the groove T2 of external cam 76, described interior roller 72 enters on the circular arc of cam ring 70, then, the second described centre wheel 24 is by locked motionless, now, corresponding six pieces of pentagon desktops 1, six pieces of fan-shaped desktops 3 shrink to desktop-centric.

In conjunction with such as shown in Figure 41 to Figure 45, pentagon glide path 12 is arranged in the bottom surface groove G4 of pentagon desktop 1, and pentagon base plate 11-1 is arranged in the bottom surface groove G5 of pentagon desktop 1.

In conjunction with such as shown in Figure 46 to Figure 50, fan-shaped desktop moves in the bottom surface groove G6 that guide groove 19 is arranged on fan-shaped 3, and sector base plate 26 1 is arranged in the bottom surface groove G7 of fan-shaped 3.

In conjunction with such as shown in Figure 51 to Figure 53, the bottom surface that clutch disk 33 is arranged on positive dodecagon 2 by screw 34 is installed in bullport G8.

Shown in Figure 54, the bottom surface that clutch disk 33 is arranged on positive dodecagon desktop 2 by eight screws 34 is installed in bullport G8.

In conjunction with such as shown in Figure 55 and 56, described gear pole 79 is T-type structure.

In conjunction with such as shown in Figure 57 and 58, three described axostylus axostyles 73 are T-type structure.

In conjunction with as shown in Figure 59, pentagon desktop slideway structure, pentagon external support axle 13 is separately mounted in pentagon glide path 12 with the column part of supporting axle 16 epimere in pentagon, described pentagon external support axle 13 is separately mounted in the first backbar assembly 7 with the column part of supporting axle 16 hypomere in pentagon, and described pentagon external support axle 13 can move with the column part of supporting axle 16 epimere in pentagon in pentagon desktop glide path 12.

In conjunction with such as shown in Figure 60 and Figure 61, six pieces of described pentagon desktops 1 are inside contracted the outer mechanism risen and drive, including pentagon desktop 1, pentagon desktop base plate 11 1, attachment screw 11 2, support set 11 3, attaching nut 11 4, locking nut 11 5, lock-screw 11 6, first backbar assembly 7, steel cable 8, first connecting rod 9, first outer rope sheave 10, pentagon external support axle 13, outer rope sheave bearing pin 14, locking pin 14 1, supporting axle 16 in pentagon, described pentagon desktop base plate 11 1 is connected by attachment screw 11 2 is fixing with pentagon desktop 1, described pentagon desktop base plate 11 1 welds together with support set 11 3, the outer end of described first connecting rod 9 connected nut 11 4 behind the hole of support set 11 3 lower end is fixed, described steel cable 8 is through the hole of lock-screw 11 6 lower end, described lock-screw 11 6 is through the hole of first connecting rod 9 the inner, described locking nut 11 5 is by locked to steel cable 8 and first connecting rod 9, described steel cable 8 is stretched on the first outer rope sheave 10, the first described outer rope sheave 10 is fixedly connected on the first backbar assembly 7 by outer rope sheave bearing pin 14 with locking pin 14 1, after the first outer rope sheave 10 is driven and is rotated, steel cable 8 is by first connecting rod 9, support set 11 3, pentagon desktop base plate 11 1 drives pentagon desktop 1 to inside contract or rise outward motion, the G4 groove of the glide path 12 being now arranged in pentagon desktop 1 does relative motion on the column part of supporting axle 16 epimere in pentagon external support axle 13 with pentagon.

In conjunction with as shown in Figure 62, fan-shaped desktop support part-structure, the fan-shaped desktop that fan-shaped external support shaft assembly 26 is separately mounted to fan-shaped desktop 3 with the column part of supporting shaft assembly 28 epimere in sector moves in guide groove 19, described fan-shaped external support shaft assembly 26 is separately mounted in the second backbar assembly 30 with the column part of supporting shaft assembly 28 hypomere in sector, and described fan-shaped external support shaft assembly 26 can move at fan-shaped desktop with the column part of supporting shaft assembly 28 epimere in sector and move in guide groove 19.

In conjunction with such as shown in Figure 63 and Figure 64, six pieces of described fan-shaped desktops 3 are inside contracted the outer mechanism risen and drive, including fan-shaped desktop 3, second connecting rod 20, second outer bearing pin 22, locking pin 22 1, second rope sheave 23, outer rope sheave bearing pin 25, fan-shaped with base plate 25 1, attachment screw 25 2, support set 25 3, attaching nut 25 4, locking nut 25 5, lock-screw 25 6, fan-shaped external support shaft assembly 26, supporting shaft assembly 28 in fan-shaped, second steel wire rope 29, second backbar assembly 30, described sector base plate 25 1 is connected by attachment screw 25 2 is fixing with fan-shaped desktop 3, described sector base plate 25 welds together with support set 25 3, the outer end of described second connecting rod 20 connected nut 25 4 behind the hole of support set 25 3 lower end is fixed, second described steel wire rope 29 is locked through lock-screw 25 6 and second connecting rod 20, second described steel wire rope 29 is stretched on the second rope sheave 23, the second described rope sheave 23 is fixedly connected on the second backbar assembly 30 by the second outer bearing pin 22 with locking pin 22 1, after the second rope sheave 23 is driven and is rotated, second steel wire rope 29 is by second connecting rod 20, support set 25 3, sector base plate 25 1 drives fan-shaped desktop 3 to inside contract or rise outward motion, the G6 groove of the glide path 19 being now arranged in fan-shaped desktop 3 does relative motion on the column part of supporting shaft assembly 28 epimere in fan-shaped external support shaft assembly 26 with sector.

In conjunction with as shown in Figure 65, pentagon desktop adopts by the connected mode between base plate 11 1 with support set 11 3 and welds.

In conjunction with as shown in Figure 66, fan-shaped employing by the connected mode between base plate 25 1 and support set 25 3 is welded.

Size of desktop of the present invention can be changed as required, and when desktop is large scale desktop, desktop is made up of 13 blocks of plates altogether, and middle one piece is dodecagon, can in height lift 2 height of table top, now in a high position；Edge is uniformly distributed 6 pieces of pentagon plate faces, can in height lift 1 height of table top, now in a high position；Edge is also uniformly distributed 6 pieces of fanning strip faces, does not highly change；Each pentagon plate face and each alternate layout in fanning strip face.When desktop becomes small size desktop from large scale desktop, both hands are held the fan-shaped desktop of close two piece and are rotated counterclockwise, now, positive dodecagon, 6 pieces of pentagons and 6 pieces of fan-shaped synchronous axial system, corner is identical, and at corner from the scope of 0 ° to 30 °, positive dodecagon declines 2 height of table top, 6 pieces of pentagons 1 height of table top of decline, 6 pieces of sectors do not decline；At corner from the scope of 30 ° to 137 °, positive dodecagon and 6 pieces of pentagons only rotate and do not decline, and 6 pieces of pentagons move to center in intermediate layer, ultimately form sexfoil, and 6 pieces of sectors move to center in top, ultimately form approximate circle desktop.When desktop becomes large scale desktop from small size desktop, both hands are held the fan-shaped desktop of close two piece and are rotated clockwise, now, positive dodecagon, 6 pieces of pentagons and 6 pieces of sectors rotate simultaneously, corner is identical, at corner from the scope of 0 ° to 107 °, 6 pieces of sectors are Tong Bu with 6 pieces of pentagons expands outward to large scale desktop along the line of symmetry respectively through the center of circle, at corner from the scope of 107 ° to 137 °, positive dodecagon 2 height of table top of rising, 6 pieces of pentagons 1 height of table top of rising, a complete desktop is formed.

When this kind of desk is large scale desktop, diameter top is 2000mm；During for small size desktop, diameter top is 1312mm.

Certainly, above-described embodiment is only the preferred version of the present invention, is specifically not limited thereto, and can make pointed adjustment on this basis according to actual needs, thus obtaining different embodiments.Owing to mode in the cards is more, just no longer illustrate one by one here.

Claims

1. the convertible round table of Desktop Dimensions, including the tabletop section being made up of six pieces of pentagon desktops (1), one piece of positive dodecagon desktop (2) and six pieces of fan-shaped desktops (3), and tabletop section is made to carry out the shifter of size conversion；

It is made up of three fractional monolayer when being converted to large table surface, it is in 12 jiaos of one piece of center desktop (2) of center respectively, is positioned at six pieces of pentagon desktops (1) of marginal position and is positioned at six pieces of fan-shaped desktops (3) of marginal position, six pieces of pentagon desktops (3) and six pieces of alternate layouts of fan-shaped desktop (3)；

When being converted to small table surface, desktop forms after being shunk by six pieces of fan-shaped desktops (3), is positioned at top layer；Six pieces of pentagon desktops (1) drop to intermediate layer, and are punctured into sexfoil, and 12 jiaos of center desktop (3) is positioned at bottom.

2. the convertible round table of Desktop Dimensions according to claim 1, it is characterized in that, described shifter includes that six pieces of pentagon desktops inside contract abduction mechanism, six pieces of fan-shaped desktops inside contract abduction mechanism, positive dodecagon desktop lifting mechanism and pentagon desktop lifting mechanism.

3. the convertible round table of Desktop Dimensions according to claim 2, it is characterized in that, six pieces of described pentagon desktops inside contract abduction mechanism, including the first row star-wheel (4), first rope sheave (5), first centre wheel (6), the six roots of sensation the first backbar assembly (7), steel cable (8), first connecting rod (9), six the first outer rope sheaves (10), the outer Assembly of pin of the six roots of sensation first (11), pentagon glide path (12), six roots of sensation pentagon external support axle (13), the outer rope sheave bearing pin (14) of the six roots of sensation, six steel wire rope pintle hook locks (15), supporting axle (16) in six roots of sensation pentagon, steel wire rope guide wheel (17) and the first pilot pin (18)；Bottom surface fixed installation pentagon glide path (12) of described six pieces of pentagon desktops (1)；Described six roots of sensation pentagon external support axle (13), in six roots of sensation pentagon, supporting axle (16) is respectively and fixedly installed in the hole of the six roots of sensation the first backbar assembly (7), in described six roots of sensation pentagon external support axle (13) and six roots of sensation pentagon, the cylinder of supporting axle (16) upper end can radially slide pentagon glide path (12) is inner, six described the first outer rope sheaves (10) are connected with the six roots of sensation the first backbar assembly (7) by the outer rope sheave bearing pin (14) of the six roots of sensation, described steel cable (8) is arranged on six the first outer rope sheaves (10), described first connecting rod (9) the inner is fixedly mounted on steel cable (8), outer end is connected to below six pieces of pentagons (1)；Six described steel wire rope pintle hook locks (15) are by locked on steel cable (8) for the inner of six first connecting rods (9), described steel wire rope guide wheel (17) and the first pilot pin (18) combined effect, steel cable (8) is made to be longitudinally arranged along the respective backbar of the six roots of sensation the first backbar assembly (7), described the first row star-wheel (4) is meshed with the first centre wheel (6), and the first row star-wheel (4) and the first rope sheave (5) are arranged in the six roots of sensation the first backbar assembly (7) by bearing pin.

4. the convertible round table of Desktop Dimensions according to claim 3, it is characterized in that, six pieces of described fan-shaped desktops inside contract abduction mechanism, guide groove (19) is moved including six roots of sensation sector desktop, second connecting rod (20), six the second outer rope sheaves (21), the outer bearing pin of the six roots of sensation second (22), six locking pins (22-1), second rope sheave (23), second centre wheel (24), the outer rope sheave bearing pin (25) of the six roots of sensation, six roots of sensation sector external support axle (26), six steel wire rope pintle hook locks (27), supporting axle (28) in six roots of sensation sector, second steel wire rope (29), second backbar assembly (30), second pilot pin (31), second planetary gear (32) and the second rope fairlead (65)；The bottom surface fixed installation six roots of sensation sector desktop of six pieces of described sectors (3) moves guide groove (19), described six roots of sensation sector external support axle (26), in six roots of sensation sector, supporting axle (28) is respectively and fixedly installed in the hole of the six roots of sensation the second backbar assembly (30), the cylinder of six roots of sensation sector external support axle (26) upper end, the cylinder of supporting axle (28) upper end can move at six roots of sensation sector desktop that guide groove (19) is inner to be radially slided in six roots of sensation sector, six described the second outer rope sheaves (21) are connected with the six roots of sensation the second backbar assembly (30) respectively by the outer bearing pin of the six roots of sensation second (22), second described steel wire rope (29) is arranged on six the second rope sheaves (23)；The inner of described second connecting rod (20) is fixedly mounted on second steel wire rope (29), and outer end is connected to below six pieces of sectors (3)；Six described steel wire rope pintle hook locks (27) by locked for the inner of six second connecting rods (20) on second steel wire rope (29), the second described rope fairlead (65) and the second pilot pin (31) combined effect, second steel wire rope (29) is made to be longitudinally arranged along the respective backbar of the six roots of sensation the second backbar assembly (30), described the second planetary gear (32) is meshed with the second centre wheel (24), and the second planetary gear (32) and the second rope sheave (23) are arranged in the six roots of sensation the second backbar assembly (30) by bearing pin.

5. the convertible round table of Desktop Dimensions according to claim 2, it is characterized in that, described positive dodecagon desktop lifting mechanism, including clutch disk (33), first left cam path (35), first cam pack (36), positive 12 jiaos of desktop fulcrums (37), desktop underframe (38), first right cam path (39), lower spindle guide set (40), Cortex Cinnamomi Tamalae plate (41), internal axle sleeve (46), thrust bearing (47), two first backbar bearing pins (52), adapter sleeve (53), two split pins (54), cam path connecting bolt and nut assembly (62), two first cam bearing pins (63)；Described positive dodecagon desktop (2) is fixing with clutch disk (33) to be connected, described adapter sleeve (53) is welded on clutch disk (33), two described split pins (54) are connected fixing to positive 12 jiaos of desktop fulcrums (37) and adapter sleeve (53), two described first backbar bearing pins (52) are in the axial groove G1 of internal axle sleeve (46), in the axial groove G2 of positive 12 jiaos of desktop fulcrums (37), internal axle sleeve (46) is made to move to axial when rotating with positive 12 jiaos of desktop fulcrums (37), two described first cam bearing pins (63) are connected fixing to the first cam pack (36) and positive 12 jiaos of desktop fulcrums (37)；The roller of described the first cam pack (36) left end is inner at the first left cam path (35), and the roller of the first cam pack (36) right-hand member is inner at the first right cam path (39)；The first described left cam path (35) is connected by cam path connecting bolt is fixing with nut assembly (62) and desktop underframe (38), the first described right cam path (39) is connected by cam path connecting bolt is fixing with nut assembly (62) and desktop underframe (38), described positive 12 jiaos of desktop fulcrums (37) are connected with lower spindle guide set (40), installed thrust bearing (47) between described positive 12 jiaos of desktop fulcrums (37) and ground, described lower spindle guide set (40) opens three uniform axial groove G3, the inner of described Cortex Cinnamomi Tamalae plate (41) inserts in three uniform axial groove G3, outer end contacts with desktop underframe (38), lower spindle guide set (40) is made to be positioned；Described positive dodecagon desktop (2) can relatively rotate relative to the central axis of desktop, and the first left cam path (35), the first right cam path (39) constraint under move to axial.

6. the convertible round table of Desktop Dimensions according to claim 2, it is characterized in that, described pentagon desktop lifting mechanism, including the six roots of sensation the first backbar assembly (7), 12 jiaos of desktop fulcrums (37), annulus frame (38) bottom desktop, lower spindle guide set (40), Cortex Cinnamomi Tamalae plate (41), second left cam path (42), second cam pack (43), second right cam path (45), internal axle sleeve (46), thrust bearing (47), first block set (51), two first backbar bearing pins (52), pentagon desktop Assembly of pin (58), cam path connecting bolt and nut assembly (62), two second cam bearing pins (64)；Six pieces of described pentagon desktops (1) are connected with the six roots of sensation the first backbar assembly (7) by pentagon desktop Assembly of pin (58)；First block set (51), the six roots of sensation the first backbar assembly (7), 12 jiaos of desktop fulcrums (37) are coupled together by two described first backbar bearing pins (52) with internal axle sleeve (46)；Two described first backbar bearing pins (52) are in the axial groove G1 of internal axle sleeve (46), the axial groove G2 of positive 12 jiaos of desktop fulcrums (37) and the hole of the first block set (51), simultaneously in the hole that the six roots of sensation the first backbar assembly (7) is inner, internal axle sleeve (46), positive 12 jiaos of desktop fulcrums (37), six pieces of pentagon desktops (1) are made to move to axial when rotating；Two described second cam bearing pins (64) are connected fixing to the second cam pack (43) and internal axle sleeve (46), the roller of described the second cam pack (43) left end is inner at the second left cam path (42), the roller of described the second cam pack (43) right-hand member is inner at the second right cam path (45), the second described left cam path (42) is connected by cam path connecting bolt is fixing with nut assembly (62) and desktop underframe (38), the second described right cam path (45) is connected by cam path connecting bolt is fixing with nut assembly (62) and desktop underframe (38), six pieces of described uniform pentagons (1) can relatively rotate relative to the central axis of desktop and at the second left cam path (42), can move to axial under the constraint of the second right cam path (45).

7. the convertible round table of Desktop Dimensions according to claim 4, it is characterized in that, six pieces of described fan-shaped desktops (3) are connected with the second backbar assembly (30) by fan-shaped desktop Assembly of pin (57), the second described backbar assembly (30) is connected by 12 backbar bearing pins (82) and the second block set (50) are fixing, described the second block set (50) is connected with the second centre wheel (24), when desktop becomes small size desktop from large scale desktop, fan-shaped desktop rotates, and inwardly radially moves；When desktop becomes large scale desktop from small size desktop, fan-shaped desktop rotates, and outwards radially moves.

8. the convertible round table of Desktop Dimensions according to claim 4, it is characterized in that, described the second centre wheel (24) vertical direction there are two groups of constraint carriage assemblys, including gear constraint bearing (66), gear constraint right support (67) and gear constraint left socle (68)；Described the second centre wheel (24) is supported by gear constraint bearing (66), described gear constraint bearing (66) is supported with gear constraint left socle (68) by gear constraint right support (67), described gear constraint left socle (68) is connected by two left socle attachment screws (68 1) and annulus frame (38) bottom desktop are fixing, described gear constraint right support (67) is connected by two right support attachment screws (67 1) and annulus frame (38) bottom desktop are fixing, two described right support attachment screws (67 1) with two pieces of right support contiguous blocks (67 2) for threadeding, two described left socle attachment screws (68 1), two pieces of left socle contiguous blocks (68 2) are for threaded.

9. the convertible round table of Desktop Dimensions according to claim 4, it is characterized in that, second centre wheel (24) and the first centre wheel (6) sound shifter when being additionally provided with rotation with lifting, this mechanism includes cam ring (70), interior roller bearing pin (71), interior roller (72), three axostylus axostyles (73), outer roller bearing pin (74), outer roller (75), external cam (76), external cam bearing (77), association bearing pin (78), gear pole (79) and external cam positioning sleeve (83)；Described gear pole (79) connects first bearing pin (80-1) by gear, gear connects second bearing pin (80-2) and is fixedly connected on the second centre wheel (24), described gear pole (79) is connected with revolute pair with three axostylus axostyles (73) by associating bearing pin (78), described three axostylus axostyles (73) install interior roller (72) by interior roller bearing pin (71), described three axostylus axostyles (73) install outer roller (75) by outer roller bearing pin (74), the 4th backbar (30-4) of the first bearing pin (69-1) and beam 2 that described cam ring (70) is connected by cam ring is connected, the 5th backbar (30-5) of the second bearing pin (69-2) and beam 2 that described cam ring (70) is connected by cam ring is connected, the described interior roller (72) circular arc portion in cam ring (70), described outer roller (75) is in the T2 groove of external cam (76), it is outside that described external cam bearing (77) is welded on external cam (76), described locating rack connecting bolt (61-1) is through the hole on external cam positioning sleeve (83), hole in external cam (76), hole on desktop underframe (38) is common with locating rack attaching nut (61-2) to be fixed external cam (76).

10. the convertible round table of Desktop Dimensions according to claim 5, it is characterized in that, described the first cam pack (36) includes two first roller bearing pins (36-1), two the first poles (36-2), first block set (36-3), first seat cushion (36-4), bearing pin (36-5) in two first, first roller (36-6), 12 jiaos of desktop fulcrums (37), two first cam bearing pins (63), described the first roller (36-6) and the first roller bearing pin (36-1) are for being rotationally connected, the first described roller bearing pin (36-1) is fixedly mounted in the hole of the first pole (36-2), in described first, the outer end of bearing pin (36-5) is fixedly mounted in the hole of the first pole (36-2), in described first, the inner of bearing pin (36-5) is fixedly mounted in the hole of the first seat cushion (36-4), described the first seat cushion (36-4) is fixedly mounted in the hole of the first block set (36-3), described the first block set (36-3) is connected by the first cam bearing pin (63) and 12 jiaos of desktop fulcrums (37) are fixing.