CN206699736U - The convertible round table of Desktop Dimensions - Google Patents

Abstract

The utility model discloses 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 the switching mechanism for making tabletop section carry out size conversion；It is made up of when being converted to large table surface three parts individual layer, it is six pieces of pentagon desktops arrangement alternate with six pieces of fan-shaped desktops positioned at 12 jiaos of one piece of center desktop of center, six pieces of pentagon desktops positioned at marginal position and six pieces of fan-shaped desktops positioned at marginal position respectively；Desktop forms after being shunk by six pieces of fan-shaped desktops when being converted to small table surface, 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 located at bottom.The utility model desktop can be with two kinds of sizes of transform size, and the conversion of size of desktop is realized by non-conterminous two pieces of sectors on people's rotary desktop, simple to operate, can solve at least two groups of human needs in library, meeting room, family.

Description

The convertible round table of Desktop Dimensions

Technical field

It the utility model is related to a kind of library science and commonly use desk, specifically a kind of convertible round table of Desktop Dimensions, category In technical field of furniture.

Background technology

Round table is all applied in library, meeting room, dining room, family.Existing table top of round table size mostly be it is constant, The round table that some families use is foldable to square table, realizes from large to small, when returning again to the part of folding, realizes by small change Greatly, the conversion of relatively larger round table and relatively smaller square table is realized.Also rectangle square table is transformed to square side Table, it is smaller rectangle square table when people is few, larger square square table is transformed to when people is more.

At present, do not change from small to big also or round table from large to small, it is small round table that desktop is wished when less than 6 people, when It is big round table that desktop is wished during close to 12 people, and study or dining of at least two groups people etc. can be met by so possessing a desk Need.

The content of the invention

In view of the above-mentioned problems of the prior art, the utility model provides a kind of convertible round table of Desktop Dimensions, table The variable round table of face size, desktop is smaller round table when less than 6 people, and desktop is larger circle when close to 12 people Table, the conversion of size of desktop is realized by non-conterminous two pieces of sectors on people's rotary desktop, convenient and practical, can solve books At least two groups of human needs in shop, meeting room, dining room, family.

To achieve these goals, the technical solution adopted in the utility model 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 make table Face part carries out the switching mechanism of size conversion；It is made up of when being converted to large table surface three parts individual layer, is to be located at centre bit respectively 12 jiaos of one piece of center desktop, six pieces of pentagon desktops positioned at marginal position and the six pieces of fan-shaped tables positioned at marginal position put Face, six pieces of pentagon desktops arrangement alternate with six pieces of fan-shaped desktops；Desktop is shunk by six pieces of fan-shaped desktops when being converted to small table surface After form, 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 located at Bottom.

The utility model is further, and the switching mechanism inside contracts abduction mechanism, six pieces of fans including six pieces of pentagon desktops Shape desktop inside contracts abduction mechanism, positive dodecagon desktop lifting mechanism, and pentagon desktop lifting mechanism.

The utility model is further, and described six pieces of pentagon desktops inside contract abduction mechanism, including the first planetary gear, the One rope sheave, the first centre wheel, the supporting beam assembly of the six roots of sensation first, steel cable, first connecting rod, six the first outer rope sheaves, six The first outer Assembly of pin of root, pentagon glide path, six roots of sensation pentagon external support axle, the outer rope sheave bearing pin of the six roots of sensation, six the first steel wires Cord lock card, support shaft, wire rope guide wheel and the first pilot pin in six roots of sensation pentagon；The bottom surface of six pieces of pentagon desktops is fixed Pentagon glide path is installed；Support shaft is respectively and fixedly installed to six in described six roots of sensation pentagon external support axle, six roots of sensation pentagon Root first is supported in the hole of beam assembly, the cylinder of support shaft upper end in described six roots of sensation pentagon external support axle and six roots of sensation pentagon Body can radially slide in pentagon glide path, and described six the first outer rope sheaves pass through rope sheave bearing pin outside the six roots of sensation and the six roots of sensation first Beam assembly connection is supported, described steel cable is arranged on six the first outer rope sheaves, and described first connecting rod is inner solid On steel cable, outer end is connected to below six pieces of pentagon desktops for Dingan County；Six described the first Steel wire rope locks Card is inner locked on steel cable by six first connecting rods, and described wire rope guide wheel is made jointly with the first pilot pin With, steel cable is supported the respective backbar of beam assembly along the six roots of sensation first and be longitudinally arranged, the first described planetary gear It is meshed with the first centre wheel, the first planetary gear and the first rope sheave are arranged on the six roots of sensation first by bearing pin and supported on beam assembly.

The utility model is further, and described six pieces of fan-shaped desktops inside contract abduction mechanism, including six roots of sensation sector desktop moves Dynamic guide groove, second connecting rod, six the second outer rope sheaves, the second outer bearing pin of the six roots of sensation, 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 the second steel wire rope pintle hook locks, support shaft in six roots of sensation sector, second steel Cord, the second supporting beam assembly, the second pilot pin, the second planetary gear and the second rope guide sleeve；Six pieces of described fan-shaped bottoms Six roots of sensation sector desktop movement guide groove is fixedly mounted in face, and support shaft is solid respectively in described six roots of sensation sector external support axle, six roots of sensation sector Dingan County is in the hole that the six roots of sensation second supports beam assembly, the fan-shaped interior supporting of the cylinder of six roots of sensation sector external support axle upper end, the six roots of sensation The cylinder of axle upper end can be moved in six roots of sensation sector desktop and radially slided in guide groove, and described six the second outer rope sheaves pass through the six roots of sensation Second outer bearing pin supports beam assembly with the six roots of sensation second respectively and is connected, and described second steel wire rope is arranged on six the second rope sheaves On；The inner of described second connecting rod is fixedly mounted on second steel wire rope, and outer end is connected to below six pieces of sectors；It is described Six the second steel wire rope pintle hook locks by the inner locked on second steel wire rope of six second connecting rods, the described second rope is with leading To set and the second pilot pin collective effect, second steel wire rope is set to support the respective backbar longitudinal direction cloth of beam assembly along the six roots of sensation second Put, the second described planetary gear is meshed with the second centre wheel, and the second planetary gear and the second rope sheave are arranged on the six roots of sensation by bearing pin On second supporting beam assembly.

The utility model is further, described positive dodecagon desktop lifting mechanism, including clutch disk, and first is left convex Race, the first cam pack, positive 12 jiaos of desktop fulcrums, desktop chassis, the first right cam path, lower axle guide pin bushing, tibet cinnamon bark plate are interior 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 fixedly connected with clutch disk, and described adapter sleeve is welded on company Connect on disk, positive 12 jiaos of desktop fulcrums are fixedly connected by described two split pins with adapter sleeve, described two first Bolster bearing pin makes internal axle sleeve and positive 12 jiaos in the axial groove G1 of internal axle sleeve, in the axial groove G2 of positive 12 jiaos of desktop fulcrums Moved to axial during desktop fulcrum, described two first cam bearing pins are by the first cam pack and positive 12 jiaos of tables Face fulcrum is fixedly connected；The roller of the first described cam pack left end is in the first left cam path, the first cam pack right-hand member Roller in the first right cam path；The first described left cam path passes through cam path connecting bolt and nut assembly and desktop bottom Frame is fixedly connected, and the described first right cam path is fixedly connected by cam path connecting bolt with nut assembly with desktop chassis, Described positive 12 jiaos of desktop fulcrums are connected with lower axle guide pin bushing, installed thrust between described positive 12 jiaos of desktop fulcrums and ground Bearing, opens three uniform axial groove G3 on described lower axle guide pin bushing, and the inner insertion three of described tibet cinnamon bark plate is uniform Axial groove G3 innner and outers end contacts with desktop chassis, is positioned lower axle guide pin bushing；Described positive dodecagon desktop is relative to table The central axis in face can relatively rotate, and the first left cam path, the first right cam path constraint under do and move to axial It is dynamic.

The utility model is further, described pentagon desktop lifting mechanism, including the supporting beam assembly of the six roots of sensation first, and ten Two jiaos of desktop fulcrums, desktop chassis, lower axle guide pin bushing, tibet cinnamon bark plate, the second left cam path, the second cam pack, the second right cam Groove, internal axle sleeve, thrust bearing, the first block set, two first backbar bearing pins, pentagon desktop Assembly of pin, cam path connection Bolts and nuts component, two second cam bearing pins；Six pieces of described pentagon desktops by pentagon desktop Assembly of pin with The six roots of sensation first supports beam assembly connection；Two described first backbar bearing pins by the first block set, the six roots of sensation first support beam assembly, 12 jiaos of desktop fulcrums connect with internal axle sleeve；Axial groove G1, just of the two described first backbar bearing pins in internal axle sleeve In the axial groove G2 of 12 jiaos of desktop fulcrums and the hole of the first block set, while the inner hole of beam assembly is supported in the six roots of sensation first In, moved to axial when rotating internal axle sleeve, positive 12 jiaos of desktop fulcrums, six pieces of pentagon desktops；Described two Second cam pack is fixedly connected by two cam bearing pins with internal axle sleeve, and the roller of the second described cam pack left end is left second In cam path, in the second right cam path, the described second left cam path passes through the roller of the second described cam pack right-hand member Cam path connecting bolt is fixedly connected with nut assembly with desktop chassis, and the described second right cam path connects spiral shell by cam path Bolt is fixedly connected with nut assembly with desktop chassis, and described six pieces of pentagon desktops can be done relative to the central axis of desktop Relatively rotate and the second left cam path, the second right cam path constraint under can move to axial.

The utility model is further, and described six pieces of fan-shaped desktops pass through fan-shaped desktop Assembly of pin and the second backbar Component is connected, and the described second supporting beam assembly is fixedly connected by 12 backbar bearing pins with the second block set, and described the Two block sets are connected with the second centre wheel, and when desktop is changed into small size desktop from large scale desktop, fan-shaped desktop rotates, and inwardly does Move radially；When desktop is changed into large scale desktop from small size desktop, fan-shaped desktop rotates, and outwards radially moves.

The utility model is further, there is two groups of constraint bracket components in the second described centre wheel vertical direction, bag Include gear constraint bearing, gear constraint is with right support and gear constraint left socle；The second described centre wheel by gear about Beam bearings, described gear constraint are supported with right support by gear constraint with bearing with gear constraint with left socle, institute The gear constraint stated is fixedly connected with left socle by two left socle attachment screws with desktop chassis, and the constraint of described gear is used Right support is fixedly connected by two right support attachment screws with desktop chassis, described two right support attachment screws and two pieces Right support contiguous block is threaded connection, and described two left socle attachment screws, two pieces of left socle contiguous blocks are threaded connection.

The utility model is further, is additionally provided with rotation and is changed with the second centre wheel during lifting and the first centre wheel sound Mechanism, the mechanism include cam ring, interior roller bearing pin, interior roller, three axostylus axostyles, outer roller bearing pin, outer roller, external cam, evagination Wheeling support, associate bearing pin, gear pole and external cam positioning sleeve；Described gear pole by gear connect first bearing pin, Gear connect second bearing pin be fixedly connected on the second centre wheel, described gear pole by associate bearing pin and three axostylus axostyles with Revolute pair is connected, and three described axostylus axostyles are pacified by roller in the installation of interior roller bearing pin, three described axostylus axostyles by outer roller bearing pin The outer roller of dress, described cam ring are connected by the 4th backbar of the first bearing pin that cam ring connects and beam 2, and described is interior Cam is connected by the 5th backbar of the second bearing pin that cam ring connects and beam 2, circular arc of the described interior roller in cam ring Part, described outer roller is in the T2 grooves of external cam, and it is outside that described evagination wheeling support, which is welded on external cam, and described determines Position frame connecting bolt is connected spiral shell through the hole on external cam positioning sleeve, the hole in external cam, the hole on desktop chassis with locating rack Mother jointly fixes external cam；When the second supporting beam assembly 30 rotates clockwise in 0o to 107o section, described second Centre wheel remains static；When the second supporting beam assembly rotates clockwise in 107o to 137o section, on cam ring Groove T1 promote in roller, outer roller leaves the groove T2 of external cam, passes through three axostylus axostyles, association bearing pin, gear pole, gear connection the A piece bearing pin, gear connect second bearing pin and drive the second centre wheel to rotate clockwise, the second described centre wheel and second Bolster component synchronization rotates；When the second centre wheel remains static, corresponding six pieces of pentagon desktops, six pieces of fan-shaped desktops to The external expansion of desktop-centric, when the second centre wheel, which is in, rotates clockwise state, positive dodecagon desktop rises two desktops Highly, six pieces of pentagon desktops rise a height of table top, when the second supporting beam assembly 30 is in 137o to the 107o section inverse time When pin rotates, described interior roller is in the groove T1 of cam ring, and outer roller is on the circular arc of external cam, the second described centre wheel In synchronous axial system state counterclockwise, corresponding positive dodecagon declines two height of table top, and six pieces of pentagon desktops decline one Height of table top, when the second supporting beam assembly 30 rotates counterclockwise in 107o to 0o section, described outer roller enters evagination In the groove T2 of wheel, described interior roller enters on the circular arc of cam ring, and the second centre wheel is locked, corresponding six pieces of pentagon tables Face, six pieces of fan-shaped desktops shrink to desktop-centric.

The utility model is further, and the first described cam pack includes two first roller bearing pins, two first Bar, the first block set, the first seat cushion, bearing pin in two first, the first roller, 12 jiaos of desktop fulcrums, two first cam bearing pins, The first described roller and the first roller bearing pin are rotation connection, and the first described roller bearing pin is fixedly mounted on the first pole Kong Zhong, the outer end of bearing pin is fixedly mounted in the hole of the first pole in described first, and the inner of bearing pin is consolidated in described first Dingan County is in the hole of the first seat cushion, and the first described seat cushion is fixedly mounted in the hole of the first block set, the first described block set It is fixedly connected by the first cam bearing pin with 12 jiaos of desktop fulcrums.

Compared with prior art, the utility model size of desktop can be changed as needed, and desktop is large scale table During face, desktop is made up of 13 blocks of plates altogether, and middle one piece is dodecagon, can lift 2 height of table top in height, this When in a high position；Edge is uniformly distributed 6 pieces of pentagon plate faces, 1 height of table top can be lifted in height, now in a high position；Edge 6 pieces of fan-shaped plate faces are also uniformly distributed, height does not change；Each pentagon plate face arrangement alternate with each fan-shaped plate face.When Desktop from large scale desktop be changed into small size desktop when, both hands are held similar two pieces of fan-shaped desktops and rotated counterclockwise, now, Positive dodecagon, 6 pieces of pentagons and 6 pieces of fan-shaped synchronous axial systems, corner is identical, in the range of corner is from 0o to 30o, positive 12 2 height of table top of angular decline, 6 pieces of pentagons decline 1 height of table top, and 6 pieces of sectors do not decline；In corner from 30o to 137o In the range of, positive dodecagon and 6 pieces of pentagons are only rotated and not declined, and 6 pieces of pentagons move in intermediate layer to center, finally Sexfoil is formed, 6 pieces of sectors move in top to center, ultimately form approximate detachable round tabletop.When desktop becomes from small size desktop For large scale desktop when, both hands are held similar two pieces of fan-shaped desktops and rotated clockwise, now, positive dodecagon, 6 pieces five jiaos Shape rotates simultaneously with 6 pieces of sectors, and corner is identical, and in the range of corner is from 0o to 107o, 6 pieces of sectors are synchronous with 6 pieces of pentagons Edge expands outward to large scale desktop respectively through the line of symmetry in the center of circle, in the range of corner is from 107o to 137o, positive ten Lune rises 2 height of table top, and 6 pieces of pentagons rise 1 height of table top, and a complete desktop is formed.Therefore when less than 6 During people, small table surface use can be converted to, desktop can be converted to larger round table, the change of size of desktop when close to 12 people Change by non-conterminous two pieces on people's rotary desktop fan-shaped realizations, can solve in library, meeting room, dining room, family extremely Few two groups of human needs.

Brief description of the drawings

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

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

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

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

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

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

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

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

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

Figure 10 is the front view that six pieces of pentagon desktops lift a desktop thickness 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 three groups of desktop displacements and the front view of two groups of lifter cam mechanisms and frame in two kinds of Desktop Dimensions；

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

Figure 14 is that the second centre wheel obtains the B-B rotations of two bracket component constraints in vertical direction in two kinds of Desktop Dimensions 90o views；

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

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

Figure 17 a are the front views of the first block set part, and Figure 17 b are the top views of the first block set part；

Figure 18 a are the front views of gangbar, and Figure 18 b are the left views of gangbar；

Figure 19 a are the front views of the contiguous block of beam two, and Figure 19 b are the left views of the contiguous block of beam two, and Figure 19 c are the contiguous blocks of beam two Top view；

Figure 20 is the six roots of sensation backbar of beam one, the backbar inner sleeve of beam one first, the backbar guide pin of beam one first, beam The component drawings of one first backbar guide sleeve；

Figure 21 is the part drawing of the first rope guide sleeve；

Figure 22 is the part drawing of the second rope guide sleeve；

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 component；

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

Figure 29 is Figure 27 middle sections A-A view；

Figure 30 is Figure 27 middle sections B-B and C-C view；

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

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

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

Figure 34 is the machine that desktop rotates the starting point that remained static with the second centre wheel 24, the first centre wheel 6 during lifting Structure top view；

Figure 35 is that the second centre wheel 24, the first centre wheel 6 remain static end point with opening when desktop is rotated with lifting Begin the mechanism top view rotated；

Figure 36 is that desktop rotates the mechanism vertical view that 15o positions are turned to the second centre wheel 24, the first centre wheel 6 during lifting Figure；

Figure 37 is that desktop rotates the mechanism vertical view that 30o positions are turned to the second centre wheel 24, the first centre wheel 6 during lifting Figure；

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

Figure 39 be in Figure 38 A-A to section 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 views in Figure 41；

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

Figure 45 is C-C in Figure 43 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 views in Figure 46；

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

Figure 50 is Figure 48 C-C to sectional view；

Figure 51 is the front view of positive dodecagon desktop；

Figure 52 is the A direction views in Figure 51；

Figure 53 is B-B 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 are pentagon desktop slideway structure front views, and Figure 59 b are pentagon desktop slideway structure left views；

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

Figure 61 is the A-A direction views in Figure 61；

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

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

Figure 64 is the A-A direction views in Figure 63；

Figure 65 a are pentagon desktop bottom plate and support set annexation front view, and Figure 65 b are pentagon desktop bottom plates With support set annexation top view；

Figure 66 a are sector bottom plate and support set structural front view, and Figure 66 b are that sector bottom plate is overlooked with support nested structure Figure；

Embodiment

Below in conjunction with accompanying drawing, the utility model is described in further detail.

The round table that two kinds of a kind of library Desktop Dimensions as shown in Figure 1 to Figure 2 are freely changed, by six pieces of pentagon desktops 1st, the tabletop section that one piece of positive dodecagon desktop 2 and six pieces of fan-shaped desktops 3 are formed, and tabletop section is carried out size conversion Switching mechanism；In 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, and in small table surface size, it includes six pieces of fan-shaped desktops 3, they Border contact each other, form small table surface size.

With reference to as shown in Figure 3 to Figure 4, when in small table surface size, six pieces of pentagon desktops 1 are shrunk to six to desktop-centric Leaf, and move down the height of a desktop, positioned at the underface of small table surface, positive dodecagon moves down two desktops Highly, positioned at the underface of sexfoil, looked down from top, up, positive dodecagon 2 is in lower section, six pieces for six pieces of fan-shaped desktops 3 Pentagon 1 is in centre, and in the height direction, three has 0.5 mm or so gap each other；

With reference to as shown in Fig. 5, Fig. 6, Figure 60 and Figure 61, above-mentioned six pieces of pentagon desktops inside contract abduction mechanism, including first Planetary gear 4, the first rope sheave 5, the first centre wheel 6, the supporting beam assembly 7 of the six roots of sensation first, steel cable 8, first connecting rod 9, six Individual first outer rope sheave 10, the outer Assembly of pin 11 of the six roots of sensation first, six pentagons, 11-1,30 attachment screws 11-2 of bottom plate, Six support sets 11-3, six attaching nuts 11-4, six locking nuts 11-5, six lock-screws 11-6, pentagon glide Road 12, six roots of sensation pentagon external support axle 13, the outer rope sheave bearing pin 14 of the six roots of sensation, six the first steel wire rope pintle hook locks 15, in six roots of sensation pentagon Support shaft 16, wire rope guide wheel 17, wherein the first pilot pin 18, A1, A2, A3, A4, A5, A6 are that steel cable 8 drives six pieces The direction of the abduction exercise of pentagon 1, when A1~A6 counter motions, it is interior that steel cable 8 drives six pieces of pentagon desktops 1 to do Contracting motion, they realize six pieces of parts for shortening sexfoil in six pieces of pentagon desktops 1 into abduction is large table surface size, The bottom surface of six pieces of pentagon desktops 1 is fixedly mounted pentagon glide path 12, in six roots of sensation pentagon external support axle 13, six roots of sensation pentagon Support shaft 16 is respectively and fixedly installed in the hole that the six roots of sensation first supports beam assembly 7, the circle of the upper end of six roots of sensation pentagon external support axle 13 The cylinder of the upper end of support shaft 16 can radially slide in pentagon glide path 12 in cylinder, six roots of sensation pentagon, described six First outer rope sheave 10 supports beam assembly 7 by rope sheave bearing pin 14 outside the six roots of sensation and the six roots of sensation first and separately constitutes rotation connection, described Steel cable 8 is arranged on six the first outer rope sheaves 10, and the inner of described first connecting rod 9 passes through six locking nuts 11-5, six lock-screws 11-6 are fixedly mounted on steel cable 8, and the outer end of described six first connecting rods 9 passes through Six support sets 11-3 are locked by six attaching nuts 11-4,11-3, six pentagons of described six support sets with bottom plate 11- 1 is connected to below six pieces of pentagons 1 by 30 attachment screws 11-2, and described six the first steel wire rope pintle hook locks 15 are by six Individual first connecting rod 9 it is inner locked on steel cable 8, described wire rope guide wheel 17 is made jointly with the first pilot pin 18 With, steel cable 8 is supported the respective backbar of beam assembly 7 along the six roots of sensation first and be longitudinally arranged, the first described planet The rope sheave 5 of wheel 4 and first is arranged on the six roots of sensation first by bearing pin and supported on beam assembly 7, in six pieces of abductions of pentagon 1 or the mistake inside contracted Cheng Zhong, the first centre wheel 6 are fixed on the vertical axis of desktop-centric, when six pieces of pentagons 1 lift 1 desktop height in height When spending, the first centre wheel 6 freely rotates on the vertical axis of desktop-centric, as shown in fig. 6, setting the angle speed of the first planetary gear 4 The angular speed spent for ω 4, the first rope sheave 5 is that ω 5,4=ω of ω 5, first support tie-rod of the beam assembly 7 for the Gear Planet Transmission, angle Speed is ω 7, and the angular speed of the first centre wheel 6 is ω 6, within Δ t time, first supporting beam assembly 7, the first planetary gear 4, Gearratio relation between first centre wheel 6 is when the first centre wheel 6 is fixed, i.e. ω 6=0, then to show the first planet Wheel 4 is used for the zoom action of desktop relative to the relative rotation of the first supporting beam assembly 7 for the φ 7 of 4 φ 7,4, and 4 φ 7 are multiplied by first The radius of rope sheave 5 obtains displacement, the displacement drive steel cable 8, then by first connecting rod 9, the first outer Assembly of pin 11, First steel wire rope pintle hook lock 15, pentagon glide path 12 drive pentagon 1 inwardly or outwardly to relatively move, when the first centre wheel 6, the When the one supporting corner of beam assembly 7 is identical, 6 7=ω of-ω of-4 ω 4-ω 7=0, i.e. 4=ω of ω 7,4=φ of φ 7, first For planetary gear 4 with the first rope sheave 5 to be fixedly connected, the first planetary gear 4 and first supports the synchronous axial system of beam assembly 7, first steel wire Rope 8 is without relative motion, and for desktop without zoom action, the state corresponds to the motion that positive dodecagon desktop 2 lifts two height of table top The motion of a height of table top is lifted with six pieces of pentagons 1；

With reference to as shown in Fig. 7, Fig. 8 and Figure 62, described six pieces of fan-shaped desktops inside contract abduction mechanism, including, the six roots of sensation is fan-shaped Desktop movement 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, the Two rope sheaves 23, the 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 sector bottom plate 26-1, 42 attachment screw 26-2, six support set 26-3, six attaching nuts 26-4, six locking nut 26-5, six are locked Tight screw 26-6, six the second steel wire rope pintle hook locks, support shaft 28 in six roots of sensation sector, second steel wire rope 29, the second backbar group Part 30, the second pilot pin 31, the second planetary gear 32, the second rope use guide sleeve 65；Wherein B1, B2, B3, B4, B5, B6 are second steel Cord 29 drives the direction of six pieces of fan-shaped abduction exercises of desktop 3, and when B1~B6 counter motions, second steel wire rope 29 drives six Block sector desktop 3 inside contracts motion, and they realize six pieces of fan-shaped desktops 3 and inside contract six of small table surface with abduction for large table surface size Six roots of sensation sector desktop movement guide groove 19, the described six roots of sensation is fixedly mounted in block part, the bottom surface of described six pieces of fan-shaped desktops 3 Support shaft 28 is respectively and fixedly installed in the hole that the six roots of sensation second supports beam assembly 30 in fan-shaped external support axle 26, six roots of sensation sector, institute The cylinder of the upper end of support shaft 28 can be fan-shaped in the six roots of sensation in the cylinder of the upper end of six roots of sensation sector external support axle 26 stated, six roots of sensation sector Radially slided in desktop movement guide groove 19, described six the second outer rope sheaves 21 pass through the outer bearing pin 22 of the six roots of sensation second and the six roots of sensation second Supporting beam assembly 30 separately constitutes rotation connection, and described second steel wire rope 29 is arranged on six the second rope sheaves 23, described The inner of second connecting rod 20 by six locking nut 26-5, six lock-screw 26-6 be fixedly mounted on second steel wire rope On 29, the outer end of described six second connecting rods 20 is locked through six support set 26-3 by six attaching nuts 26-4, described Six support set 26-3, six fan-shaped desktops be connected to six pieces of sectors by 42 attachment screw 26-2 with bottom plate 26-1 Below desktop 3, described six the second steel wire rope pintle hook locks 27 are inner locked in second steel wire by six second connecting rods 20 On rope 29, the described second rope uses the collective effect of 65 and second pilot pin of guide sleeve 31, makes second steel wire rope 29 along the six roots of sensation the The respective backbar of two supporting beam assemblies 30 is longitudinally arranged, and the second described planetary gear 32 is installed with the second rope sheave 23 by bearing pin Supported in the six roots of sensation second on beam assembly 30, in six pieces of fan-shaped abductions of desktop 3 or during inside contracting, the second centre wheel 24 is on table The vertical axis at face center is fixed, and six pieces of fan-shaped desktops 3 without lifting, only relatively move, second in radial direction in height Centre wheel 24 can do free rotation on the vertical axis of desktop-centric, as shown in fig. 7, setting the angular speed of the second planetary gear 32 Angular speed for ω 32, the second rope sheave 23 is that the supporting beam assembly 30 of ω 23,32=ω of ω 23, second is for the Gear Planet Transmission Bar, angular speed are ω 30, and the angular speed of the second centre wheel 24 is ω 24, within Δ t time, the second supporting beam assembly 30, the Gearratio relation between two planetary gears 32, the second centre wheel 24 is, when the second centre wheel 24 is fixed, i.e. ω 24=0, Then show that the second planetary gear 32 is used for the scaling of desktop relative to the relative rotation of the second supporting beam assembly 30 for the φ 30 of 4 φ 30,4 Action, the radius that 4 φ 30 are multiplied by the second rope sheave 23 obtain displacement, second steel wire rope 29 of the displacement drive, then connect by second Bar 20, the second outer bearing pin 22, the second steel wire rope pintle hook lock 27, fan-shaped desktop movement guide groove 19 drive fan-shaped desktop 3 inwardly or outwardly Relative movement, when the second centre wheel 24, second supporting corner of beam assembly 30 is identical,-the ω 30 of 24 30=ω of-ω of -4 ω 32 =0, i.e. 32=ω of ω 30,32=φ of φ 30, the second planetary gear 32 are to be fixedly connected with the second rope sheave 23, the second planetary gear 32 It is corresponding without zoom action, the state without relative motion, desktop with the second supporting synchronous axial system of beam assembly 30, second steel wire rope 29 The motion that positive dodecagon desktop 2 lifts two height of table top lifts the motion of a height of table top with six pieces of pentagon desktops 1；

With reference to as shown in figure 9, the positive dodecagon desktop lifting mechanism in described center, lifts two desktop thickness H1, bag Include clutch disk 33, eight screws 34, the first left cam path 35, the first cam pack 36, positive 12 jiaos of desktop fulcrums 37, desktop Chassis 38, the first right cam path 39, lower axle guide pin bushing 40, tibet cinnamon bark plate 41, internal axle sleeve 46, thrust bearing 47, two first supportings Beam bearing pin 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 is changed into small size desktop from large scale desktop, corner counterclockwise from 0o to In the range of 30o, positive dodecagon declines two height of table top, in the range of corner counterclockwise is from 30o to 137o, positive 12 Angular desktop, which only rotates, not to be lifted, when desktop is changed into large scale desktop from small size desktop, in corner clockwise from 0o to 107 In the range of o, positive dodecagon desktop, which only rotates, not to be lifted, in the range of corner clockwise is from 107o to 137o, positive 12 Angular to rise two height of table top while rotating, described positive dodecagon 2 passes through eight screws 34 and clutch disk 33 It is fixedly connected, described adapter sleeve 53 is welded on clutch disk 33, and described two split pins 54 are by positive 12 jiaos of desktop branch Axle 37 is fixedly connected with adapter sleeve 53, and described two first backbar bearing pins 52 are in the axial groove G1 of internal axle sleeve 46, also exist In the axial groove G2 of positive 12 jiaos of desktop fulcrums 37, so that internal axle sleeve 46 can rotate with positive 12 jiaos of desktop fulcrums 37 simultaneously And can move to axial, described two first cam bearing pins 63 are by the first cam pack 36 and positive 12 jiaos of desktop branch Axle 37 is fixedly connected, and the roller of the described left end of the first cam pack 36 is in the first left cam path 35, the first described cam For the roller of the right-hand member of component 36 in the first right cam path 39, the described first left cam path 35 passes through cam path connecting bolt and spiral shell Female component 62 is fixedly connected with desktop chassis 38, and the described first right cam path 39 passes through cam path connecting bolt and nut assembly 62 are fixedly connected with desktop chassis 38, and described positive 12 jiaos of Zhuo Xing faces fulcrum 37 is rotatablely connected with the composition of lower axle guide pin bushing 40, institute Installed thrust bearing 47 between the positive dodecagon desktop fulcrum 37 stated and ground, open on described lower axle guide pin bushing 40 three it is uniform Axial groove G3, three uniform axial groove G3 innner and outers ends of inner insertion of described tibet cinnamon bark plate 41 connect with desktop chassis 38 Touch, positioned lower axle guide pin bushing 40；Described positive dodecagon desktop 2 can do relative turn relative to the central axis of desktop It is dynamic and the first left cam path 35, the first right cam path 39 constraint under can move to axial, mobile distance is H1.

With reference to six pieces of pentagon desktop lifting mechanisms as shown in Figure 10, described, a desktop thickness H2, including six are lifted Root first supports 7,12 jiaos of desktop fulcrums 37 of beam assembly, and desktop chassis 38, lower axle guide pin bushing 40, tibet cinnamon bark plate 41, second is left convex Race 42, the second cam pack 43, the second right cam path 45, internal axle sleeve 46, thrust bearing 47, the first block set 51, two first Backbar bearing pin 52, pentagon desktop Assembly of pin 58, cam path connecting bolt and nut assembly 62, two second cam bearing pins 64, described six pieces of pentagon desktops 1 are driven, and when desktop is changed into small size desktop from large scale desktop, are being turned counterclockwise In the range of angle is from 0o to 30o, six pieces of pentagons 1 decline a height of table top, in scope of the corner counterclockwise from 30o to 137o Interior, six pieces of pentagon desktops, 1 rotation does not lift, and when desktop is changed into large scale desktop from small size desktop, is turning clockwise In the range of angle is from 0o to 107o, six pieces of pentagons, 1 rotation does not lift, in scope of the corner clockwise from 107o to 137o Interior, six pieces of pentagons 1 rise a height of table top while rotating, and described six pieces of pentagons 1 pass through pentagon desktop pin Shaft assembly 58 and the six roots of sensation first support beam assembly 7 and are connected, and described two first backbar bearing pins 52 are by the first block set 51, the six roots of sensation First supporting 7,12 jiaos of desktop fulcrums 37 of beam assembly connect with internal axle sleeve 46, described two first backbar bearing pins 52 In the axial groove G1 of internal axle sleeve 46, also in the axial groove G2 of positive 12 jiaos of desktop fulcrums 37 while in the first block set 51 Kong Li, also supported in the six roots of sensation first the inner hole of beam assembly 7, so that internal axle sleeve 46,37, six pieces of positive 12 jiaos of desktop fulcrums Pentagon 1 can simultaneously be rotated and can moved to axial, and described two second cam bearing pins 64 are by the second cam set Part 43 is fixedly connected with internal axle sleeve 46, and the roller of the described left end of the second cam pack 43 is described in the second left cam path 42 The right-hand member of the second cam pack 43 roller in the second right cam path 45, the described second left cam path 42 is connected by cam path Connecting bolt is fixedly connected with nut assembly 62 with desktop chassis 38, and the described second right cam path 45 passes through cam path connecting bolt It is fixedly connected with nut assembly 62 with desktop chassis 38, described six pieces of pentagon desktops 1 can relative to the central axis of desktop With relatively rotate and the second left cam path 42, the second right cam path 45 constraint under can move to axial, it is mobile Distance be H2.

With reference to six pieces of fan-shaped height of table top as shown in figure 11, described without lifting, its support section has the second centre wheel 24, Second supporting 30,12 jiaos of desktop fulcrums 37 of beam assembly, desktop chassis 38, lower axle guide pin bushing 40, three positioning gussets 41, outer shaft 46, thrust bearing 47, the second block set 50, fan-shaped desktop Assembly of pin 57, two constraint bearing pins 59, second, which restricts, uses guide sleeve 65, 12 backbar bearing pins 82, described six pieces of fan-shaped desktops 3 support beam assembly by fan-shaped desktop Assembly of pin 57 and second 30 connections, the described second supporting beam assembly 30 is fixedly connected by 12 backbar bearing pins 82 with the second block set 50, described The second block set 50 and the second centre wheel 24 composition be rotatablely connected, when desktop is changed into small size desktop from large scale desktop, fan Shape desktop is only rotated, inwardly radially moved, without lifting, when desktop is changed into large scale desktop from small size desktop, fan-shaped table Face only rotates, outwards radially moved, without lifting.

With reference to three groups of desktops displacement as shown in figure 12, described and two groups of lifter cam mechanisms and frame, including second Support beam assembly 30, the gear support bearing pin 30-11 of beam two, the gear connecting key 30-12 of beam two, beam two gear lock pin 30-13, second Planetary gear 32, clutch disk 33, six roots of sensation screw 34, the first left cam path 35, the first cam 36, positive dodecagon fulcrum 37, table Face chassis 38, lower axle guide pin bushing 40, tibet cinnamon bark plate 41, the second left cam path 42, the second cam 43, the first rope are used guide sleeve 44, pushed away Power bearing 47, bearing pin 48, key 49, the second block set 50, the first block set 51, two first backbar bearing pins 52, adapter sleeve 53, two Split pin 54, gangbar 55, three set bars 56, fan-shaped desktop Assembly of pin 57, pentagon desktop Assembly of pin 58, two about Beam bearing pin 59, gear locating rack component 60, two locating rack connecting bolts and nut 61, two cam path connecting bolts and nut Component 62, two first cam bearing pins 63, two second cam bearing pins 64, the second rope use 65,12 backbar pins of guide sleeve Axle 82, described six pieces of pentagon desktops 1 lift a desktop thickness H2, the positive lifting of dodecagon desktop 2 two in described center Individual desktop thickness H1, described six pieces of fan-shaped height of desktop 3 are without lifting；The first described rope sheave 5 passes through bearing pin 48 and first Bolster component 7 is fixedly connected, and the first described planetary gear 4 is connected by key 49 with the first rope sheave 5, the first described planetary gear 4 It is meshed with the first centre wheel 6, described steel cable 8 is pressed on the first rope sheave 5, and the first described centre wheel 6 is logical Cross two constraint bearing pins 59 to be fixedly connected with the second centre wheel 24, the second described block set 50 and the first planetary gear 4 composition rotate Connection, the described second supporting beam assembly 30 are fixedly connected by backbar bearing pin 82 with the second block set 50, described first Bolster component 7 is fixedly connected by the first backbar bearing pin 52 with the first block set 51, and the described second rope is with guide sleeve 65 and the The composition rotation connection of two centre wheels 24, the second described rope sheave 23 pass through the gear support bearing pin 30-11 of beam two and the second backbar Component 30 is fixedly connected, and the second described planetary gear 32 passes through the gear connecting key 30-12 of beam two and the gear support bearing pin 30- of beam two 11 connections, the described gear lock pin 30-13 of beam two are arranged on the gear support bearing pin 30-11 of beam two, the second described planetary gear 32 are meshed with the second centre wheel 24, and described second steel wire rope 29 is pressed on the second rope sheave 23, the positioning of described gear Frame component 60 is to realize that the second centre wheel 24 is fixed with releasing fixed a part of structure.

With reference to as shown in Figure 13 to Figure 14, two support groups of the described movement in vertical direction of the second centre wheel of constraint 24 Right support 67, two right support attachment screws 67-1, two pieces of right supports are used in part, including gear constraint bearing 66, gear constraint Left socle 68, two left socle attachment screws 68-1, two pieces of left sides are used in contiguous block 67-2, right support tie-beam 67-3, gear constraint Support contiguous block 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 supported by gear constraint right support 67 and gear constraint left socle 68, described gear constraint It is made up of with left socle 68 two left socle attachment screws 68-1, two pieces of left socle contiguous blocks 68-2, left socle tie-beams 68-3, It is fixedly connected by described two left socle attachment screws 68-1 with desktop chassis 38, right support 67 is used in the constraint of described gear It is made up of two right support attachment screws 67-1, two pieces of right support contiguous blocks 67-2, right support tie-beams 67-3, by described Two right support attachment screws 67-1 are fixedly connected with desktop chassis 38, described two right support attachment screws 67-1 and two pieces Right support contiguous block 67-2 is is threadedly coupled, described two left socle attachment screws 68-1, two pieces of left socle contiguous blocks 68-2 For threaded connection.

With reference to as shown in Figure 15 to Figure 22, the phase relation of two described pack supports and two sets of Planetary Gear Transmissions, it is wrapped Include the six roots of sensation first and support beam assembly 7, first, a beam backbar 7-1, second, a beam backbar 7-2, the 3rd supporting of a beam Beam 7-3, a beam the 4th backbar 7-4, beam the first backbar outer sleeve 7-5, the 5th backbar 7-6 of a beam, a beam One backbar contiguous block 7-7；One beam six roots of sensation backbar 7-8, beam the first backbar inner sleeve 7-9, first backbar of beam Guide pin 7-10, beam the first backbar guide sleeve 7-11, the second supporting beam 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 supporting of two beams Beam 30-5, two beam inner sleeve 30-6, two beam guide pin 30-7, two beam guide sleeve 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, the One rope sheave 5, the second rope sheave 23, bearing pin 48, the second block set 50, the first block set 51, gangbar 55, three linkage pin assemblies 56, connection Dynamic first bearing pin 56-1, link the second bearing pin 56-2, and link the 3rd bearing pin 56-3, the described six roots of sensation first supporting quilt of beam assembly 7 First block set 51 supports, and the described second supporting beam assembly 30 is supported by the second block set 50, described gangbar 55 and three connection Dynamic pin assemblies 56 connect the 5th the 4th backbar 30-4 of two beams, two beams backbar 30-5 and the 4th backbar 7-4 of a beam Pick up and, the first described rope sheave 5 is connected by first backbar 7-1 of bearing pin 48 and a beam, and the second described rope sheave 23 is logical Two beam gear support bearing pin 30-11 connections are crossed, described beam the first backbar guide sleeve 7-11 passes through first backbar of beam Guide pin 7-10, beam the first backbar inner sleeve 7-9 are connected with a beam six roots of sensation backbar 7-8, and two described beams are oriented to Set 30-8 is connected by two beam guide pin 30-7, two beam inner sleeve 30-6 with two beam six roots of sensation backbar 30-9, described connection Dynamic first bearing pin 56-1, the second bearing pin 56-2 of linkage, the 3rd bearing pin 56-3 of linkage are fixedly connected with gangbar 55.

With reference to as shown in Figure 23 to Figure 24, a kind of scheme of the cam pack of the utility model first, including two first rollings Sub- bearing pin 36-1, two the first pole 36-2, the first block set 36-3, the 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 is rotation connection, and the first described roller bearing pin 36-1 is fixedly mounted in the first pole 36-2 hole, described first Interior bearing pin 36-5 outer end is fixedly mounted in the first pole 36-2 hole, the fixed peace in bearing pin 36-5 the inner in described first In the first seat cushion 36-4 hole, the first described seat cushion 36-4 is fixedly mounted in the first block set 36-3 hole, described First block set 36-3 is fixedly connected by the first cam bearing pin 63 with 12 jiaos of desktop fulcrums 37.

With reference to as shown in Figure 25 to Figure 26, a kind of scheme of the cam pack of the utility model second, including two second rollings Sub- bearing pin 43-1, two the second pole 43-2, the 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 For rotation connection, the second described roller bearing pin 43-1 is fixedly mounted in the second pole 43-2 hole, and described second is domestic Axle 43-5 outer end is fixedly mounted in the second pole 43-2 hole, and bearing pin 43-5 the inner is fixedly mounted in described second In second seat cushion 43-4 hole, the second described seat cushion 43-4 is fixedly mounted in the second block set 43-3 hole, and described second Block set 43-3 is fixedly connected by the first cam bearing pin 64 with internal axle sleeve 46.

With reference to as shown in Figure 27 to Figure 32, a kind of scheme of the utility model arc-shaped cam component, including the first left cam Groove 35, desktop chassis 38, the first right cam path 39, the second left cam path 42, the second right cam path 45, cam path connecting bolt 62-1, cam path attaching nut 62-2, the described first left cam path 35 are connected by cam path connecting bolt 62-1 and cam path Connected nut 62-2 is fixedly mounted on desktop chassis 38, the described first right cam path 39 by cam path connecting bolt 62-1 with Cam path attaching nut 62-2 is fixedly mounted on desktop chassis 38, and the described second left cam path 42 connects spiral shell by cam path Bolt 62-1 and cam path attaching nut 62-2 is fixedly mounted on desktop chassis 38, and the described second right cam path 45 passes through cam Groove connecting bolt 62-1 and cam path attaching nut 62-2 is fixedly mounted on desktop chassis 38.

With reference to as shown in Figure 33 to Figure 40, the second centre wheel 24 there are with the first centre wheel 6 when desktop is rotated with lifting Sound switching mechanism, including the first centre wheel 6, the second centre wheel 24, the second supporting beam assembly 30, the 4th backbar of beam 2 30-4, beam 2 the 5th backbar 30-5, the contiguous block 30-10 of beam two, desktop chassis 38, internal axle sleeve 46, the second block set 50, two Constrain bearing pin 59, locating rack connecting bolt 61-1, locating rack attaching nut 61-2, the first bearing pin 69-1 of cam ring connection is interior Second bearing pin 69-2 of cam connection, 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, evagination wheeling support 77, associate bearing pin 78, gear pole 79, two rooted tooth wheel bearing pins 80, gear connection First bearing pin 80-1, gear connect second bearing pin 80-2, and two back-up rings, 81,12 backbar bearing pins 82, external cam is fixed Position set 83, described gear pole 79 connects first bearing pin 80-1 by gear, gear connects second bearing pin 80-2 and fixed It is connected on the second centre wheel 24, described gear pole 79 is connected by associating bearing pin 78 with three axostylus axostyles 73 with revolute pair, institute Three axostylus axostyles 73 stated install interior roller 72 by interior roller bearing pin 71, and three described axostylus axostyles 73 are installed outer by outer roller bearing pin 74 Roller 75, described cam ring 70 are connected by the 4th backbar 30-4 of the first bearing pin 69-1 that cam ring connects and beam 2, Described cam ring 70 is connected by the 5th backbar 30-5 of the second bearing pin 69-2 that cam ring connects and beam 2, and described is interior Roller 72 is in the circular arc portion of cam ring 70, and described outer roller 75 is in the T2 grooves of external cam 76, described evagination wheeling support 77 to be welded on external cam 76 be outside, and described locating rack connecting bolt 61-1 is through the hole on external cam positioning sleeve 83, evagination Hole, the hole on desktop chassis 38 and locating rack attaching nut 61-2 on wheel 76 jointly fix external cam 76, when the second supporting When beam assembly 30 rotates clockwise in 0o to 107o section, the second described centre wheel 24 remains static, such as Figure 34 institutes Show, when the second supporting beam assembly 30 rotates clockwise in 107o to 137o section, the groove T1 on cam ring 70 promotes interior roll Son 72, outer roller 75 leaves the groove T2 of external cam 76, then, passes through three axostylus axostyles 73, association bearing pin 78, gear pole 79, gear First bearing pin 80-1 of connection, gear connect second bearing pin 80-2 and drive the second centre wheel 24 to rotate clockwise, and described the Two centre wheels 24 and the second supporting synchronous axial system of beam assembly 30, as shown in Figure 35, Figure 36, Figure 37, Figure 35 show the second center Wheel 24 starts to rotate, and Figure 36 show the position that the second centre wheel 24 turns to 15o, and Figure 37 show the second centre wheel 24 and rotated To 30o position, when the second centre wheel 24 remains static, corresponding six pieces of pentagon desktops, 1, six piece of fan-shaped desktop 3 to The external expansion of desktop-centric, when the second centre wheel 24, which is in, rotates clockwise state, positive dodecagon 2 rises two desktop height Degree, six pieces of pentagon desktops 1 rise a height of table top, when the second supporting beam assembly 30 is counterclockwise in 137o to 107o section During rotation, described interior roller 72 is in the groove T1 of cam ring 70, and outer roller 75 is on the circular arc of external cam 76, and described second Centre wheel 24 is in synchronous axial system state counterclockwise, and as shown in Figure 37, Figure 36, now, corresponding positive dodecagon 2 declines two tables Face height, six pieces of pentagon desktops 1 decline a height of table top, when the second supporting beam assembly 30 is in 107o to the 0o section inverse time When pin rotates, described outer roller 75 enters in the groove T2 of external cam 76, and described interior roller 72 enters the circular arc of cam ring 70 On, then, the second described centre wheel 24 is by locked motionless, now, corresponding six pieces of pentagon desktops, 1, six piece of fan-shaped desktop 3 to Desktop-centric shrinks.

With reference to as shown in Figure 41 to Figure 45, pentagon glide path 12 is arranged in the bottom surface groove G4 of pentagon desktop 1, five sides Shape is arranged on bottom plate 11-1 in the bottom surface groove G5 of pentagon desktop 1.

With reference to as shown in Figure 46 to Figure 50, fan-shaped desktop movement guide groove 19 is arranged in the bottom surface groove G6 of fan-shaped desktop 3, fan Shape is arranged on bottom plate 26-1 in the bottom surface groove G7 of fan-shaped desktop 3.

With reference to 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.

With reference to 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.

With reference to as shown in Figure 55 and 56, described gear pole 79 is T-type structure.

With reference to as shown in Figure 57 and 58, three described axostylus axostyles 73 are T-type structure.

With reference to as shown in figure 50, pentagon desktop slideway structure, pentagon external support axle 13 and support shaft 16 in pentagon The column part of epimere is separately mounted in pentagon glide path 12, and described pentagon external support axle 13 in pentagon with supporting The column part of the hypomere of axle 16 is separately mounted in the first supporting beam assembly 7, described pentagon external support axle 13 and pentagon The column part of the interior epimere of support shaft 16 can move in pentagon desktop glide path 12.

With reference to as shown in Figure 60 and Figure 61, described six pieces of pentagon desktops 1 are inside contracted the mechanism of outer driving of rising, including five Side shape desktop 1, pentagon desktop bottom plate 11-1, attachment screw 11-2, support set 11-3, attaching nut 11-4, locking nut 11-5, lock-screw 11-6, the first supporting beam assembly 7, steel cable 8, first connecting rod 9, the first outer rope sheave 10, pentagon External support axle 13, outer rope sheave bearing pin 14, locking pin 14-1, support shaft 16 in pentagon, described pentagon desktop with bottom plate 11- 1 is fixedly connected by attachment screw 11-2 with pentagon desktop 1, described pentagon desktop bottom plate 11-1 and support set 11-3 Weld together, the outer end of described first connecting rod 9 is fixed through connected nut 11-4 behind the hole of the lower end of support set 11-3, institute The steel cable 8 stated passes through the hole of the lower end of lock-screw 11-6, and described lock-screw 11-6 passes through first connecting rod 9 inner Hole, described locking nut 11-5 is locked by steel cable 8 and first connecting rod 9, and described steel cable 8 is tensioned On the first outer rope sheave 10, the described first outer rope sheave 10 is fixedly connected on first by outer rope sheave bearing pin 14 and locking pin 14-1 Support beam assembly 7 on, when the first outer rope sheave 10 by driving rotation after, steel cable 8 by first connecting rod 9, support set 11- 3rd, pentagon desktop bottom plate 11-1 drives pentagon desktop 1 to inside contract or motion of rising outside, now in pentagon desktop 1 The G4 grooves of glide path 12 do relative motion on column part of the pentagon external support axle 13 with the epimere of support shaft in pentagon 16.

With reference to as shown in Figure 62, fan-shaped desktop support part-structure, fan-shaped external support shaft assembly 26 and support shaft in sector The column part of the epimere of component 28 is separately mounted in the fan-shaped desktop movement guide groove 19 of fan-shaped desktop 3, and described sector is outer to prop up The column part for holding shaft assembly 26 and the fan-shaped interior supporting hypomere of shaft assembly 28 is separately mounted in the second supporting beam assembly 30, described Fan-shaped external support shaft assembly 26 with it is fan-shaped in the column part of the supporting epimere of shaft assembly 28 can move guide groove in fan-shaped desktop 19 inner movements.

With reference to as shown in Figure 63 and Figure 64, described six pieces of fan-shaped desktops 3 are inside contracted the mechanism of outer driving of rising, including sector Desktop 3, second connecting rod 20, the second outer bearing pin 22, locking pin 22-1, the second rope sheave 23, outer rope sheave bearing pin 25, sector bottom 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 outer branch Hold shaft assembly 26, fan-shaped interior supporting shaft assembly 28, second steel wire rope 29, the second supporting beam assembly 30, described sector bottom Plate 25-1 is fixedly connected by attachment screw 25-2 with fan-shaped desktop 3, and described sector is welded with bottom plate 25-and support set 25-3 Together, the outer end of described second connecting rod 20 is fixed through connected nut 25-4 behind the hole of the lower end of support set 25-3, described Second steel wire rope 29 it is locked with second connecting rod 20 through lock-screw 25-6, second described steel wire rope 29 is stretched in the On two rope sheaves 23, the second described rope sheave 23 is fixedly connected on the second backbar group by the second outer bearing pin 22 and locking pin 22-1 On part 30, after the second rope sheave 23 is rotated by driving, second steel wire rope 29 passes through second connecting rod 20, support set 25-3, sector Fan-shaped desktop 3 is driven to inside contract or rise outside motion with bottom plate 25-1, now the G6 grooves of the glide path 19 in fan-shaped desktop 3 exist Fan-shaped external support shaft assembly 26 on the column part of the fan-shaped interior supporting epimere of shaft assembly 28 with doing relative motion.

With reference to as shown in Figure 65, connected mode use weldering of the pentagon desktop between bottom plate 11-1 and support set 11-3 Connect.

With reference to as shown in Figure 66, connected mode use welding of the sector between bottom plate 25-1 and support set 25-3.

The utility model size of desktop can be changed as needed, when desktop is large scale desktop, desktop altogether by 13 pieces of plate compositions, middle one piece is dodecagon, 2 height of table top can be lifted in height, now in a high position；Edge is equal 6 pieces of pentagon plate faces of even distribution, can lift 1 height of table top in height, now in a high position；Edge is also uniformly distributed 6 pieces of fans Shape plate face, height do not change；Each pentagon plate face arrangement alternate with each fan-shaped plate face.When desktop is from large scale desktop When being changed into small size desktop, both hands are held similar two pieces of fan-shaped desktops and rotated counterclockwise, now, positive dodecagon, 6 piece five Angular and 6 pieces of fan-shaped synchronous axial systems, corner is identical, and in the range of corner is from 0o to 30o, positive dodecagon declines 2 desktops Highly, 6 pieces of pentagons decline 1 height of table top, and 6 pieces of sectors do not decline；In the range of corner is from 30o to 137o, positive 12 Angular only rotated with 6 pieces of pentagons does not decline, and 6 pieces of pentagons move in intermediate layer to center, ultimately form sexfoil, 6 pieces It is fan-shaped to be moved in top to center, ultimately form approximate detachable round tabletop.When desktop is changed into large scale desktop from small size desktop, Both hands are held similar two pieces of fan-shaped desktops and rotated clockwise, and now, positive dodecagon, 6 pieces of pentagons and 6 pieces of sectors are simultaneously Rotate, corner is identical, and in the range of corner is from 0o to 107o, 6 pieces of sectors are synchronous with 6 pieces of pentagons along respectively through the center of circle Line of symmetry expand outward to large scale desktop, in the range of corner is from 107o to 137o, positive dodecagon rises 2 desktops Highly, 6 pieces of pentagons rise 1 height of table top, and a complete desktop is formed.

When this kind of desk is large scale desktop, diameter top is 2000 mm；For small size desktop when, diameter top is 1312 mm。

Certainly, above-described embodiment is only preferred scheme of the present utility model, is specifically not limited thereto, and on this basis may be used Made according to being actually needed with targetedly adjusting, so as to obtain different embodiments.Due to mode in the cards compared with It is more, just no longer illustrate one by one here.

Claims (10)

1. a kind of convertible round table of Desktop Dimensions, including by six pieces of pentagon desktops（1）, one piece of positive dodecagon desktop（2） With six pieces of fan-shaped desktops（3）The tabletop section of composition, and the switching mechanism for making tabletop section carry out size conversion；

It is made up of when being converted to large table surface three parts individual layer, is 12 jiaos of one piece of center desktop positioned at center respectively（2）、 Positioned at six pieces of pentagon desktops of marginal position（1）With six pieces of fan-shaped desktops positioned at marginal position（3）, six pieces of pentagon desktops （1）With six pieces of fan-shaped desktops（3）Alternate arrangement；

Desktop is by six pieces of fan-shaped desktops when being converted to small table surface（3）Formed after contraction, positioned at top layer；Six pieces of pentagon desktops（1） Intermediate layer is dropped to, and is punctured into sexfoil, 12 jiaos of center desktop（2）Positioned at bottom.

2. the convertible round table of Desktop Dimensions according to claim 1, it is characterised in that the switching mechanism includes six pieces Pentagon desktop inside contracts abduction mechanism, six pieces of fan-shaped desktops inside contract abduction mechanism, positive dodecagon desktop lifting mechanism, Yi Jiwu Side shape desktop lifting mechanism.

3. the convertible round table of Desktop Dimensions according to claim 2, it is characterised in that six pieces of described pentagon desktops Inside contract abduction mechanism, including the first planetary gear（4）, the first rope sheave（5）, the first centre wheel（6）, the supporting beam assembly of the six roots of sensation first （7）, steel cable（8）, first connecting rod（9）, six the first outer rope sheaves（10）, the first outer Assembly of pin of the six roots of sensation（11）, five Side shape glide path（12）, six roots of sensation pentagon external support axle（13）, the outer rope sheave bearing pin of the six roots of sensation（14）, six the first steel wire rope pintle hook locks （15）, support shaft in six roots of sensation pentagon（16）, wire rope guide wheel（17）And first pilot pin（18）；Six pieces of pentagon desktops （1）Bottom surface be fixedly mounted pentagon glide path（12）；Described six roots of sensation pentagon external support axle（13）, prop up in six roots of sensation pentagon Hold axle（16）It is respectively and fixedly installed to the six roots of sensation first and supports beam assembly（7）Hole in, described six roots of sensation pentagon external support axle （13）With support shaft in six roots of sensation pentagon（16）The cylinder of upper end can be in pentagon glide path（12）In radially slide, it is described Six the first outer rope sheaves（10）Pass through rope sheave bearing pin outside the six roots of sensation（14）Beam assembly is supported with the six roots of sensation first（7）Connection, described the Steel cable（8）Installed in six the first outer rope sheaves（10）On, described first connecting rod（9）The inner is fixedly mounted on first Steel wire rope（8）On, outer end is connected to six pieces of pentagon desktops（1）Below；Six described the first steel wire rope pintle hook locks（15）Will Six first connecting rods（9）It is inner locked in steel cable（8）On, described wire rope guide wheel（17）With the first pilot pin （18）Collective effect, make steel cable（8）Beam assembly is supported along the six roots of sensation first（7）Respective backbar be longitudinally arranged, The first described planetary gear（4）With the first centre wheel（6）It is meshed, the first planetary gear（4）With the first rope sheave（5）Pacified by bearing pin Beam assembly is supported mounted in the six roots of sensation first（7）On.

4. the convertible round table of Desktop Dimensions according to claim 3, it is characterised in that in six pieces of described fan-shaped desktops Contracting abduction mechanism, including six roots of sensation sector desktop movement guide groove（19）, second connecting rod（20）, six the second outer rope sheaves（21）, the six roots of sensation Second outer bearing pin（22）, six locking pins（22-1）, the second rope sheave（23）, the second centre wheel（24）, the outer rope sheave bearing pin of the six roots of sensation （25）, six roots of sensation sector external support axle（26）, six the second steel wire rope pintle hook locks（27）, support shaft in six roots of sensation sector（28）, second Steel wire rope（29）, the second supporting beam assembly（30）, the second pilot pin（31）, the second planetary gear（32）And the second rope guide sleeve （65）；Six pieces of described fan-shaped desktops（3）Bottom surface six roots of sensation sector desktop movement guide groove is fixedly mounted（19）, described six roots of sensation fan Shape external support axle（26）, support shaft in six roots of sensation sector（28）It is respectively and fixedly installed to the six roots of sensation second and supports beam assembly（30）Hole In, six roots of sensation sector external support axle（26）Support shaft in the cylinder of upper end, six roots of sensation sector（28）The cylinder of upper end can be in the six roots of sensation Fan-shaped desktop moves guide groove（19）In radially slide, described six the second outer rope sheaves（21）Pass through the second outer bearing pin of the six roots of sensation（22） Respectively beam assembly is supported with the six roots of sensation second（30）Connection, described second steel wire rope（29）Installed in six the second rope sheaves（23） On；Described second connecting rod（20）The inner be fixedly mounted on second steel wire rope（29）On, outer end is connected to six pieces of fan-shaped tables Face（3）Below；Six described the second steel wire rope pintle hook locks（27）By six second connecting rods（20）It is inner locked at second Steel wire rope（29）On, the second described rope guide sleeve（65）With the second pilot pin（31）Collective effect, make second steel wire rope （29）Beam assembly is supported along the six roots of sensation second（30）Respective backbar be longitudinally arranged, the second described planetary gear（32）With second Centre wheel（24）It is meshed, the second planetary gear（32）With the second rope sheave（23）The six roots of sensation second is arranged on by bearing pin and supports beam assembly （30）On.

5. the convertible round table of Desktop Dimensions according to claim 2, it is characterised in that described positive dodecagon desktop Elevating mechanism, including clutch disk（33）, the first left cam path（35）, the first cam pack（36）, positive 12 jiaos of desktop fulcrums （37）, desktop chassis（38）, the first right cam path（39）, lower axle guide pin bushing（40）, tibet cinnamon bark 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 spiral shell Female component（62）, two first cam bearing pins（63）；Described positive dodecagon desktop（2）With clutch disk（33）It is fixed to connect Connect, described adapter sleeve（53）It is welded on clutch disk（33）On, described two split pins（54）By positive 12 jiaos of desktop branch Axle（37）With adapter sleeve（53）It is fixedly connected, described two first backbar bearing pins（52）In internal axle sleeve（46）Axial groove G1 In, positive 12 jiaos of desktop fulcrums（37）Axial groove G2 in, make internal axle sleeve（46）With positive 12 jiaos of desktop fulcrums（37）During rotation Move to axial, described two first cam bearing pins（63）By the first cam pack（36）With positive 12 jiaos of desktop fulcrums （37）It is fixedly connected；The first described cam pack（36）The roller of left end is in the first left cam path（35）In, the first cam set Part（36）The roller of right-hand member is in the first right cam path（39）In；The first described left cam path（35）Pass through cam path connecting bolt With nut assembly（62）With desktop chassis（38）It is fixedly connected, the described first right cam path（39）Pass through cam path connecting bolt With nut assembly（62）With desktop chassis（38）It is fixedly connected, described positive 12 jiaos of desktop fulcrums（37）With lower axle guide pin bushing（40） Connection, described positive 12 jiaos of desktop fulcrums（37）The installed thrust bearing between ground（47）, described lower axle guide pin bushing（40） On open three uniform axial groove G3, described tibet cinnamon bark plate（41）Three uniform axial groove G3 innner and outers ends of inner insertion With desktop chassis（38）Contact, makes lower axle guide pin bushing（40）Positioned；Described positive dodecagon desktop（2）Relative to desktop Central axis can relatively rotate, and in the first left cam path（35）, the first right cam path（39）Constraint under do relative axle To movement.

6. the convertible round table of Desktop Dimensions according to claim 2, it is characterised in that described pentagon desktop lifting Mechanism, including the six roots of sensation first support beam assembly（7）, 12 jiaos of desktop fulcrums（37）, desktop chassis（38）, lower axle guide pin bushing（40）, Tibet cinnamon bark plate（41）, the second left cam path（42）, the second cam pack（43）, the second right cam path（45）, internal axle sleeve（46）, push away Power bearing（47）, the 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）Pass through pentagon Desktop Assembly of pin（58）Beam assembly is supported with the six roots of sensation first（7）Connection；Two described first backbar bearing pins（52）By One block set（51）, the six roots of sensation first support beam assembly（7）, 12 jiaos of desktop fulcrums（37）With internal axle sleeve（46）Connect；It is described Two first backbar bearing pins（52）In internal axle sleeve（46）Axial groove G1, positive 12 jiaos of desktop fulcrums（37）Axial groove G2 And first block set（51）Hole in, while the six roots of sensation first support beam assembly（7）In inner hole, make internal axle sleeve（46）, just 12 jiaos of desktop fulcrums（37）, six pieces of pentagon desktops（1）Moved to axial during rotation；Two described second cam pins Axle（64）By the second cam pack（43）With internal axle sleeve（46）It is fixedly connected, the second described cam pack（43）The roller of left end In the second left cam path（42）In, the second described cam pack（43）The roller of right-hand member is in the second right cam path（45）In, institute The the second left cam path stated（42）Pass through cam path connecting bolt and nut assembly（62）With desktop chassis（38）It is fixedly connected, institute The the second right cam path stated（45）Pass through cam path connecting bolt and nut assembly（62）With desktop chassis（38）It is fixedly connected, institute The six pieces of pentagon desktops stated（1）It can be relatively rotated relative to the central axis of desktop and in the second left cam path（42）、 Second right cam path（45）Constraint under can move to axial.

7. the convertible round table of Desktop Dimensions according to claim 4, it is characterised in that six pieces of described fan-shaped desktops （3）Pass through fan-shaped desktop Assembly of pin（57）With the second supporting beam assembly（30）Connection, the described second supporting beam assembly（30） Pass through 12 backbar bearing pins（82）With the second block set（50）It is fixedly connected, the second described block set（50）With the second centre wheel （24）Connection, when desktop is changed into small size desktop from large scale desktop, fan-shaped desktop rotates, and inwardly radially moves；Work as table Face from small size desktop be changed into large scale desktop when, fan-shaped desktop rotates, and outwards radially moves.

8. the convertible round table of Desktop Dimensions according to claim 4, it is characterised in that the second described centre wheel（24） There are two groups of constraint bracket components, including gear constraint bearing in vertical direction（66）, gear constraint right support（67）With Gear constraint left socle（68）；The second described centre wheel（24）By gear constraint bearing（66）Support, described gear Constraint bearing（66）By gear constraint right support（67）With gear constraint left socle（68）Support, the constraint of described gear Use left socle（68）Pass through two left socle attachment screws（68–1）With desktop chassis（38）It is fixedly connected, the constraint of described gear Use right support（67）Pass through two right support attachment screws（67–1）With desktop chassis（38）It is fixedly connected, described two right branch Frame attachment screw（67–1）With two pieces of right support contiguous blocks（67–2）For threaded connection, described two left socle attachment screws （68–1）, two pieces of left socle contiguous blocks（68–2）For threaded connection.

9. the convertible round table of Desktop Dimensions according to claim 4, it is characterised in that when being additionally provided with rotation with lifting Second centre wheel（24）With the first centre wheel（6）Sound switching mechanism, the mechanism include 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）, evagination wheeling support （77）, associate bearing pin（78）, gear pole（79）With external cam positioning sleeve（83）；Described gear pole（79）Connected by gear Connect first bearing pin（80-1）, gear connect second bearing pin（80-2）It is fixedly connected on the second centre wheel（24）On, it is described Gear pole（79）By associating bearing pin（78）With three axostylus axostyles（73）Connected with revolute pair, three described axostylus axostyles（73）Pass through interior rolling Sub- bearing pin（71）Roller in installation（72）, described three axostylus axostyles（73）Pass through outer roller bearing pin（74）The outer roller of installation（75）, institute The cam ring stated（70）The first bearing pin connected by cam ring（69-1）With the 4th backbar of beam 2（30-4）Connection, it is described Cam ring（70）The second bearing pin connected by cam ring（69-2）With the 5th backbar of beam 2（30-5）Connection, it is described Interior roller（72）In cam ring（70）Circular arc portion, described outer roller（75）In external cam（76）T2 grooves in, it is described Evagination wheeling support（77）It is welded on external cam（76）Outside being, locating rack connecting bolt（61-1）Through external cam positioning sleeve（83） On hole, external cam（76）On hole, desktop chassis（38）On hole and locating rack attaching nut（61-2）Jointly by external cam （76）It is fixed.

10. the convertible round table of Desktop Dimensions according to claim 5, it is characterised in that the first described cam pack （36）Including two first roller bearing pins（36-1）, two the first poles（36-2）, the first block set（36-3）, the first seat cushion（36- 4）, bearing pin in two first（36-5）, the first roller（36-6）, 12 jiaos of desktop fulcrums（37）, two first cam bearing pins （63）, described the first roller（36-6）With the first roller bearing pin（36-1）For rotation connection, the first described roller bearing pin （36-1）It is fixedly mounted on the first pole（36-2）Hole in, bearing pin in described first（36-5）Outer end be fixedly mounted on One pole（36-2）Hole in, bearing pin in described first（36-5）The inner be fixedly mounted on the first seat cushion（36-4）Hole In, the first described seat cushion（36-4）It is fixedly mounted on the first block set（36-3）Hole in, the first described block set（36-3）It is logical Cross the first cam bearing pin（63）With 12 jiaos of desktop fulcrums（37）It is fixedly connected.