CN206413976U - A kind of same table - Google Patents

Abstract

The utility model provides a kind of same table, change the mode that conventional lifting structure is combined with inner tube, middle pipe and outer tube, the function of synchronization lifting is realized using the combining structure of double nut, twin-screw and double-jacket tube, structure design compact and reasonable, separated with inner tube, middle pipe and outer tube, be not in because nut is strengthened in terms of producing loosening, the situation that inner tube and middle pipe loosen together, the stability and reliability of structure of transmission with screw rod；Up to, pressure is concentrated on the larger sleeve pipe in lower section cross section inner screw, improves the stability of component, long-term pressure-bearing will not also deform, and extend the life-span of nut and screw rod；The structure of integral type, need to only pull down component and be checked that inner tube, middle pipe and outer tube are unaffected substantially, and maintenance cost is low, it is easy to operate when going wrong.

Description

A kind of same table

Technical field

The utility model is related to same table technical field, more particularly to a kind of same table.

Background technology

Telescoping tube or expansion link used in general electric elevatable table are mostly three section lifting structures, its specific knot Structure is usually, including inner tube, the tube and the outer tube, in the rear end insertion of inner tube in pipe, in the rear end insertion outer tube of middle pipe, Ran Hou The motor set in outer tube drives screw rod to rotate, and screw rod is provided with nut, and nut is fixedly connected with inner tube, inner tube can not relatively in Pipe is rotated, therefore nut can not follow screw rod to rotate, and along the axial movement of screw rod, so as to drive inner tube to stretch, for example, is stretched When the draw extends, inner tube is first moved, and relatively middle pipe is reached after certain size, and pipe continues flexible in driving, until middle pipe Stretch out after nominal length, motor is stopped, when telescoping tube shrinks, electric motor driven screw is axially moved nut-screw, drive Inner tube is retracted, and when inner tube is retracted to the setting position of middle pipe, middle pipe starts to retract, until middle pipe is retracted into the setting position of outer tube Put, motor is stopped.It can be seen that whether elongation or shortening, the telescoping tube of this structure is all that inner tube is first moved and just can in place Make middle pipe setting in motion, once nut produces loosening with screw rod, inner tube and middle pipe can be caused to loosen together, so in the steady of transmission It is not fine in terms of qualitative and reliability of structure, axial weight capacity is poor.

There are the technical scheme of the telescoping tube of synchronization lifting, such as Publication No. 104254264A, publication date before the application A kind of lifting column is disclosed for 2014-12-31 Chinese patent, including：Guiding piece, the guiding piece includes first component, the Two parts and third member, they are arranged to intussusception each other；And mandrel unit, the mandrel unit includes：First heart axle, First heart axle is fixed on by end on the end of the first component of guiding piece；Second heart axle, second heart axle tool There is the first spindle nut being fixed on its end, first spindle nut and the first heart axle coordinate；Second spindle nut, institute State the second spindle nut and be fixed against rotation, and coordinate with the second heart axle；Driving tube, the driving tube is matched somebody with somebody with the second heart axle Close, for driving the second heart axle；And the first component of clutch, it is located at the upper end of driving tube；And motor unit, institute State motor unit have reversible electric motor and transmission device, wherein, the transmission device has the second component of clutch, is used for Coordinate with the first component of the clutch at the upper end of driving tube, for driving first component；The second component of guiding piece leads to Cross lower end and be fixed on the lower end of the second heart axle, the second spindle nut coordinated with the second heart axle is passed through using rigid connector Clutch shaft bearing and be fixed on short, the short axle is fixed to the end of driving tube, and short axle is fixed by second bearing.But this The lifting column for planting structure is managed in the first spindle nut and the second spindle nut are separately fixed at in inner tube, causes generation this The first spindle nut and the second spindle nut are assembled with middle pipe and inner tube respectively during lifting column, but also will be with the first heart axle Coordinate with the second heart axle, generation difficulty is big, and efficiency is very low；And the first thinner heart axle position in lower section as support, certainly will pair The stability of whole lifting column is unfavorable, long-term pressure-bearing, once deforming, permanent damage can be all caused to nut and screw rod Wound, and because the complexity of its structure is higher, maintenance gets up relatively difficult, and changing nut needs inner and outer tubes together Change, maintenance cost is very high.

Utility model content

The technical problems to be solved in the utility model is：Exist for the current existing elevating mechanism for electric elevatable table Shortcomings in terms of the stability and reliability of structure of transmission, and exist structure complexity it is higher, maintenance is got up ratio More difficult, changing nut is needed together to change inner and outer tubes, and the problems such as maintenance cost is very high, the utility model is provided A kind of same table solves the above problems.

The utility model solves the technical scheme that its technical problem used：A kind of same table, including lifting column, table Face, drive mechanism, transmission mechanism and truss, the lifting column include：

Inner screw, the upper end of the inner screw is drive end, and the lower end of the inner screw is fixed with guiding flower part, described interior The outer wall that screw rod is located at drive end and is oriented between flower part is provided with external screw thread；

External screw rod, the external screw rod is divided into upper, middle and lower from top to bottom, the outer wall on the top and bearing it is interior Circle coordinates, and the outer wall at the middle part, which is provided with external screw thread, the nearly lower end of outer wall of the bottom, is fixed with guide runner；The interior spiral shell In the inner chamber of bar insertion external screw rod, described be oriented to spends the inwall of part and external screw rod to be relatively fixed in the circumferential；

First nut, the epimere of first nut has internal thread, and hypomere has bearing chamber, and the bearing is arranged on institute State in bearing chamber and its outer ring and the side wall of the bearing chamber coordinates, the internal thread of first nut and the outer spiral shell of inner screw Line coordinates；

Second nut, second nut is arranged on the lower section of first nut, the internal thread of second nut with The external screw thread of external screw rod coordinates；

In inner sleeve, external screw rod insertion inner sleeve and the inwall of the guide runner and inner sleeve is slidably matched, Second nut is fixedly connected with the upper end of inner sleeve；

Outer tube, the outer tube is set in outside inner sleeve and its upper end is fixedly connected with first nut；

Inner tube, said inner tube is set in outside the outer tube, and said inner tube links with the inner screw；

Middle pipe, the middle pipe sleeve is located at outside said inner tube, and the middle pipe links with the outer tube；

Outer tube, the outer tube is set in outside the middle pipe；

The drive mechanism is coupled by transmission mechanism with the drive end of inner screw, for driving the inner screw to rotate, The drive mechanism and transmission mechanism are fixedly connected with the truss, and the upper end of said inner tube is fixedly connected with the truss, The desktop is fixed on the truss.

Preferably, the lifting column also includes linkage unit, the linkage unit be arranged on outer tube and middle pipe it Between, the part that the lower end of the middle pipe grows said inner tube is fixedly connected with the linkage unit, and the lower end of the outer tube is long The part for going out said inner tube is fixedly connected with the linkage unit；The linkage unit includes linkage block and the first shim, institute State linkage block to be set on the outer tube, the inwall of the linkage block is fitted with the outer wall of outer tube, the linkage block it is interior Wall is provided with least one first linkage flange, and side wall correspondence the first linkage flange of the outer tube opens up the first linkage Hole, the first linkage flange is caught in the first linkage hole；

The outer wall of the linkage block is fitted with the inwall of middle pipe, the outer wall of the linkage block offer at least one second Dynamic hole, the inner surface of first shim is fitted with the outer wall of middle pipe and the corresponding second linkage hole is provided with second Dynamic flange, the second linkage flange is penetrated in middle pipe insertion the second linkage hole, the outer surface of first shim with The inwall laminating of outer tube relative with outer tube can simultaneously be slided.

Preferably, the first linkage flange tool tangent plane, the tangent plane is from the described first linkage flange and linkage block Junction extends to the end face of the first linkage flange obliquely, and the intersection between the tangent plane and the inwall of linkage block is parallel In horizontal plane and positioned at the highest point tangent plane of the first linkage flange.

Preferably, the lifting column also includes the second shim, the side wall of said inner tube offer at least one the Three linkage holes, the inner surface of second shim is fitted with the outer wall of inner tube, the inner surface correspondence institute of second shim The 3rd linkage hole is stated to be provided with the 3rd linkage flange, the 3rd linkage flange insertion the 3rd linkage hole.

Preferably, the lifting column also includes spacing block and stripper loop, the quantity of the bearing is two, described point Spacer block is arranged between two bearings and is fixedly connected with first nut；The stripper loop is arranged on described in two Between bearing, the inwall of the stripper loop and the outer wall on the top coordinate, and the inwall of outer wall and the spacing block coordinates, described The upper surface and lower surface of stripper loop respectively with the inner rings of two bearings closely against；

The outer wall on the top offers in first annular groove, the first annular groove and is embedded with shaft block ring, the axle The part for protruding first annular groove with back-up ring is pressed on the inner ring of the bearing of top；

Locating convex block is provided with the outer wall of the spacing block, the first nut correspondence locating convex block offers positioning Hole, the locating convex block is caught in positioning hole.

Preferably, the outer wall of first nut is provided with the first seam, the cylindroid of first seam is stretched into outside Coordinate in sleeve pipe and with the inwall of outer tube, the ring surface of first seam is pressed on the upper surface of the outer tube；

The outer wall of second nut is provided with the second seam, the cylindroid of second seam stretch into inner sleeve and Coordinate with the inwall of inner sleeve, the ring surface of second seam is pressed on the upper surface of the inner sleeve；

Be provided with the outer wall of first nut on the first locating slot, the outer wall of second nut be provided with second determine Position groove, the outer tube correspondence first locating slot is provided with the first positioning convex, the first positioning convex insertion first In locating slot, the inner sleeve correspondence second locating slot is provided with the second positioning convex, the second positioning convex insertion In second locating slot；

The outer wall for being oriented to flower part is in cylinder, and described be oriented on the outer wall of flower part is provided with external splines, the outer spiral shell The correspondence external splines is provided with internal spline on the inwall of bar, and the external splines coordinates with internal spline.

Preferably, the lifting column also includes locating piece and installing plate, the outer wall of the locating piece stops provided with the 3rd Mouthful, the cylindroid of the 3rd seam from lower end stretch into inner sleeve in and coordinate with the inwall of inner sleeve, the 3rd seam Ring surface be pressed on the lower surface of the inner sleeve, the bottom of the locating piece is provided with least two locating dowels, the positioning The lower surface of block offers the self tapping hole upwardly extended between two parties；The installing plate is fixedly connected with the side wall of outer tube, described to install The plate correspondence locating dowel is provided through in the spacing hole of upper and lower surface, the locating dowel insertion spacing hole.

Preferably, the truss includes：

Crossbeam, two crossbeams are be arranged in parallel, and multiple stiffeners are fixedly connected between two crossbeams；

Support arm, the support arm includes two vertically fixed flangings, and the quantity of the support arm is two；One branch One flanging of brace is fixedly connected with homonymy one end of two crossbeams, and its another flanging is fixedly connected with desktop；It is another One flanging of individual support arm is fixedly connected with the homonymy other end of two crossbeams, and its another flanging is fixed with desktop to be connected Connect；

The drive mechanism includes motor and motor casing, and the motor is fixed in the motor casing, two motors Shell is fixed between two crossbeams, and they are set close to two support arms respectively, the bottom surface of the motor casing with it is interior The upper end of pipe is fixedly connected；

The transmission mechanism includes turbine, worm screw and drive link, and the turbine and worm screw are arranged in the motor casing, institute The output shaft for stating motor is coaxially fixed with worm screw, and the helical tooth of the worm screw is engaged with the tooth of turbine, one end of the drive link Coaxially fixed with the turbine, other end is fixedly connected through the bottom of the motor with the drive end.

Preferably, the crossbeam includes intermediate beam, two other pipes and two short tubes, the two ends of the intermediate beam are inserted respectively Enter in two other pipes and connection fixed thereto, by the of described two the other end of pipes insert respectively a short tube and with Be fixedly connected, two short tubes an of flanging of the support arm and homonymy one end of two crossbeams, which are fixed, to be connected Connect.

Preferably, also including multiple corner braces and two footing, the outside of a flanging of the corner brace and other pipe is fixed Connection, a flanging is fixedly connected with desktop in addition；Two installing plates are fixedly connected with two footing respectively.

The beneficial effects of the utility model are, this same table changes conventional lifting structure and inner tube, middle pipe and outer The mode that pipe is combined, the function of synchronization lifting is realized using the combining structure of double nut, twin-screw and double-jacket tube, structure design is tight Reason is gathered together, is separated with inner tube, middle pipe and outer tube, is not in that inner tube and middle pipe are together because nut produces loosening with screw rod Strengthened in terms of the situation of loosening, the stability and reliability of structure of transmission；Up to, pressure concentrates on lower section to inner screw On the larger sleeve pipe in cross section, the stability of component is improved, long-term pressure-bearing will not also deform, extend nut and spiral shell The life-span of bar；The structure of integral type, need to only pull down component and be checked that inner tube, middle pipe and outer tube are substantially not when going wrong It can be affected, maintenance cost is low, it is easy to operate.

Brief description of the drawings

The utility model is further illustrated with reference to the accompanying drawings and examples.

Fig. 1 is the sectional view of the lifting assembly of the optimum embodiment of same table of the present utility model.

Fig. 2 is the partial view of lifting assembly of the present utility model.

Fig. 3 is the partial view of lifting assembly of the present utility model.

Fig. 4 is the partial view of lifting assembly of the present utility model.

Fig. 5 is the partial view of lifting assembly of the present utility model.

Fig. 6 is the structural representation of external screw rod of the present utility model.

Fig. 7 is the structural representation of the present utility model for being oriented to flower part.

Fig. 8 is partial exploded view of the external screw rod of the present utility model with being oriented to flower part.

Fig. 9 is the structural representation of locating piece of the present utility model.

Figure 10 is the sectional perspective schematic diagram of the lifting column of the optimum embodiment of same table of the present utility model.

Figure 11 is the three-dimensional partial schematic diagram removed after outer tube of lifting column of the present utility model.

Figure 12 be lifting column of the present utility model removal in three-dimensional partial schematic diagram after pipe.

Figure 13 is the sectional view of the optimum embodiment of lifting column of the present utility model.

Figure 14 is the structural representation of linkage block of the present utility model.

Figure 15 is the sectional view of linkage block of the present utility model.

Figure 16 is the structural representation of the first shim of the present utility model.

Figure 17 is the structural representation of the second shim of the present utility model.

Figure 18 is the structural representation of installing plate of the present utility model.

Figure 19 is the schematic perspective view of the optimum embodiment of same table of the present utility model.

Figure 20 is the schematic perspective view of the optimum embodiment of same table of the present utility model.

Figure 21 is that same table of the present utility model removes the schematic perspective view after desktop.

Figure 22 is the sectional perspective schematic diagram of same table of the present utility model.

Figure 23 is the sectional perspective schematic diagram of same table of the present utility model.

Figure 24 is the sectional perspective schematic diagram of same table of the present utility model.

1, inner tube in figure, 2, middle pipe, 3, outer tube, 4, linkage block, the 5, first shim, the 6, first linkage flange, 7, second Link flange, the 8, second shim, the 9, installing plate, the 10, the 3rd linkage flange 11, desktop, and 12, crossbeam, 13, stiffener, 14, branch Brace, 15, motor, 16, motor casing, 17, turbine, 18, drive link, 19, corner brace, 20, footing, 4-1, the second linkage hole, 6-1, Tangent plane, 9-1, screwed hole, 9-2, spacing hole, 12-1, intermediate beam, 12-2, other pipe, 12-3, short tube, 100, inner screw, 101, drive Moved end, 102, male half coupling, 103, screwed hole, 200, be oriented to flower part, 201, recessed seam, 202, external splines, 300, external screw rod, 301, First annular groove, the 302, second annular groove, 303, internal spline, 300a, top, 300b, middle part, 300c, bottom, 400, bearing, 500th, the first nut, the 501, first seam, the 502, first locating slot, 600, spacing block, 601, locating convex block, 700, stripper loop, 800th, outer tube, 900, inner sleeve, the 1000, second nut, the 1001, second seam, the 1002, second locating slot, 1100, axle uses Back-up ring, 1200, guide runner, 1300, locating piece, the 1301, the 3rd seam, 1302, locating dowel, 1303, self tapping hole, 1304, Three locating slots.

Embodiment

Embodiment of the present utility model is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning Same or similar element or element with same or like function are represented to same or similar label eventually.Below by ginseng The embodiment for examining accompanying drawing description is exemplary, is only used for explaining the utility model, and it is not intended that to of the present utility model Limitation.On the contrary, embodiment of the present utility model includes falling into owning in the range of the spirit and intension of attached claims Change, modification and equivalent.

In description of the present utility model, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width Degree ", " thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer ", " axle To ", " radial direction ", the orientation of the instruction such as " circumference " or position relationship be based on orientation shown in the drawings or position relationship, be only for It is easy to description the utility model and simplifies describe, rather than to indicate or imply that signified device or element must have specific Orientation, with specific azimuth configuration and operation, therefore it is not intended that to limitation of the present utility model.

In addition, term " first ", " second " etc. are only used for describing purpose, and it is not intended that indicating or implying relatively important Property., it is necessary to illustrate in description of the present utility model, unless otherwise clearly defined and limited, term " connected ", " company Connect " it should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or it is integrally connected；It can be machine Tool is connected or electrically connected；Can be joined directly together, can also be indirectly connected to by intermediary.For this area For those of ordinary skill, concrete meaning of the above-mentioned term in the utility model can be understood with concrete condition.In addition, in this reality With in new description, unless otherwise indicated, " multiple " are meant that two or more.

The utility model provides a kind of same table, lifting column, desktop, drive mechanism, transmission mechanism and truss, lifting Column includes lifting assembly, and as shown in Fig. 1 ~ 9, lifting assembly includes：

Inner screw 100, the upper end of inner screw 100 is drive end 101, and drive mechanism drives drive end by transmission mechanism 101 rotate, so as to drive inner screw 100 to rotate, naturally it is also possible to drive inner screw 100 to rotate with other kinds of drive； The lower end of inner screw 100 is fixed with guiding flower part 200, and inner screw 100 is located at outer between drive end 101 and guiding flower part 200 Wall is provided with external screw thread；In this embodiment, the lower end of inner screw 100 has male half coupling 102, is oriented to flower part 200 and stops provided with recessed Mouth 201, male half coupling 102 is inserted in recessed seam 201, and then inner screw 100 is further opened with the screwed hole upwardly extended from lower surface 103, it is oriented to flower part 200 and offers through hole between two parties, is then screwed in by screw through through hole in screwed hole 103, so that interior spiral shell The lower end of bar 100 is fixedly connected with being oriented to flower part 200；

In external screw rod 300, the inner chamber of the insertion external screw rod 300 of inner screw 100, the outer wall of flower part 200 is oriented in cylinder, is led Correspondence external splines 202 on external splines 202, the inwall of external screw rod 300 is provided with to the outer wall of flower part 200 and is provided with internal spline 303, internal spline 303 is circumferentially paved with the inner chamber of external screw rod 300, and external splines 202 is mutually twisted with internal spline 303, makes inner screw 100 and external screw rod 300 be relatively fixed in the circumferential, and in the axial direction relatively freely, just can band when inner screw 100 rotates Dynamic external screw rod 300 is rotated together；External screw rod 300 is divided into top 300a, middle part 300b and bottom 300c, top 300a from top to bottom Outer wall be the smooth face of cylinder, coordinate with the inner ring of bearing 400 and fix, the quantity of bearing 400 is two, two bearings 400 It is arranged at intervals；

First nut 500, the epimere of the first nut 500 has internal thread, and hypomere has bearing chamber, and bearing 400 is arranged on The side wall of in bearing chamber and its outer ring and bearing chamber, which coordinates, to be fixed, the internal thread of the first nut 500 and the outer spiral shell of inner screw 100 Line coordinates, and is provided between two bearings 400 on spacing block 600 and stripper loop 700, the outer wall of spacing block 600 and is provided with positioning Projection 601, outer tube 800 and inner sleeve 900 are square tube, then the outer wall of the first nut 500 and the second nut 1000 is also The rectangle matched with outer tube 800 and the shape of inner sleeve 900, so the quantity of locating convex block 601 four, respectively for first Four sides of nut 500, the first nut 500 correspondence locating convex block 601 offers four positioning holes, and locating convex block 601 is caught in In positioning hole.The inwall of stripper loop 700 coordinates with top 300a outer wall to be fixed, and the inwall of outer wall and spacing block 600 coordinates solid It is fixed, the upper surface and lower surface of stripper loop 700 respectively with the inner rings of two bearings 400 closely against；Top 300a outer wall is opened Provided with first annular groove 301, shaft block ring 1100 is embedded with first annular groove 301, shaft block ring 1100 protrudes first annular The part of groove 301 is pressed on the inner ring of the bearing 400 of top.Pass through stripper loop 700, shaft block ring 1100 and the energy of spacing block 600 It is enough relative between reliable limited bearing 400, the first nut 500, inner screw 100, the nut 1000 of external screw rod 300 and second Position, it is ensured that their axiality；Reliable fixing bearing 400 simultaneously, it is not easy to loosen, it is ensured that during assembly operating can By property.

Outer tube 800 is set in outside inner sleeve 900, and the outer wall of the first nut 500 is provided with the first seam 501, and first stops The cylindroid of mouth 501 stretches into outer tube 800 and coordinates fixation, the ring surface of the first seam 501 with the inwall of outer tube 800 On the upper surface for being pressed in outer tube 800, so that the upper end of outer tube 800 is fixedly connected with the first nut 500；In order to further （Especially in the axial direction）Strengthen setting on the bonding strength of the first nut 500 and outer tube 800, the outer wall of the first nut 500 There are four the first locating slots 502, the first locating slot 502 of correspondence of outer tube 800 is provided with the first positioning convex, the first positioning convex In embedded first locating slot 502, in this embodiment, the first positioning convex is, by riveting, to make outer tube 800 be formed after deforming , so in assembling, the first nut 500 is first easier in insertion outer tube 800, then corresponds to the riveting of the first locating slot 502 Outer tube 800, deforms outer tube 800, forms the first positioning convex of embedded first locating slot 502；Can certainly be outside First positioning convex is directly set, although somewhat inconvenient during equipment, the not very few work for having removed riveting on the inwall of sleeve pipe 800 Sequence, and outside seems outer tube 800 without deformation, better appearance.Because outer tube 800 is square tube, so four first fixed Position groove 502 is separately positioned at four vertical seamed edges of the first nut 500.

Second nut 1000, the middle part 300b of external screw rod 300 outer wall is provided with external screw thread, and the second nut 1000 is arranged on the The lower section of one nut 500, the internal thread of the second nut 1000 coordinates with the external screw thread of external screw rod 300；Outside second nut 1000 Wall is provided with the second seam 1001, the cylindroid of the second seam 1001 stretch into inner sleeve 900 and with the inwall of inner sleeve 900 Coordinate and fix, the ring surface of the second seam 1001 is pressed on the upper surface of inner sleeve 900 so that the upper end of inner sleeve 900 with Second nut 1000 is fixedly connected；The second annular groove 302 is offered at the bottom 300c of the external screw rod 300 nearly lower end of outer wall, the Be embedded with guide runner 1200 in second ring groove 302, in the insertion inner sleeve 900 of external screw rod 300 and guide runner 1200 with it is interior The inwall of sleeve pipe 900 is slidably matched, because inner sleeve 900 is square tube, thus guide runner 1200 lateral wall profile be also with Matching rectangle；With the first locating slot likewise, being provided with four the second locating slots 1002 on the outer wall of the second nut 1000, The second locating slot 1002 of correspondence of inner sleeve 900 is provided with the second positioning convex, and the second positioning convex is embedded in the second locating slot 1002 In.

Locating piece 1300, the outer wall of locating piece 1300 is provided with the 3rd seam 1301, and the cylindroid of the 3rd seam 1301 is under End is stretched into inner sleeve 900 and coordinates fixation with the inwall of inner sleeve 900, and the ring surface of the 3rd seam 1301 is pressed in inner sleeve On 900 lower surface, with the first locating slot likewise, being provided with four the 3rd locating slots 1304 on the outer wall of locating piece 1300, The 3rd locating slot 1304 of correspondence of inner sleeve 900 is provided with the 3rd positioning convex, and the 3rd positioning convex is embedded in the 3rd locating slot 1304 In.The bottom surface of locating piece 1300 is rectangle, and in the bottom of locating piece 1300 provided with four locating dowels 1302, four locating dowels 1302 rectangular distributions, locating dowel 1302 is raised straight down.

As shown in Figure 10 ~ 18, this lifting column also includes inner tube 1, middle pipe 2 and outer tube 3, and inner tube 1 is set in outer tube Outside, because the upper end of inner screw can connect drive device, drive device can be fixedly connected with desktop again, so when on inner screw Desktop will be lifted when rising, and inner tube 1 is also required to follow desktop together to rise, thus by the upper end of inner tube 1 and drive device or Person's desktop is fixedly connected, so as to reach the purpose that inner tube 1 links with inner screw；Middle pipe 2 is set in outside inner tube 1, due to inner screw With external screw rod synchronization lifting, so when inner screw rises, external screw rod also synchronously rises, and external screw rod needs to link with middle pipe 2, And external screw rod and outer tube are synchronization liftings, so making outer tube be linked with middle pipe 2 by linkage unit；Linkage unit includes The shim 5 of linkage block 4 and first, the lower end of inner tube 1 is higher than the lower end of outer tube, also above the lower end of middle pipe 2, the linkage block 4 are located at the lower section of the lower end of inner tube 1, and positioned between outer tube and middle pipe 2, linkage block 4 has endoporus, is joined by this endoporus Motion block 4 is set on outer tube, and because outer tube is square tube, the cross section of the endoporus of linkage block 4 is the cross section with outer tube The rectangle that matches of outline, the inwall of linkage block 4 is fitted with the outer wall of outer tube and coordinates fixation, so that linkage block 4 It is fixedly connected with outer tube, in order to ensure the fixation surely leaned between linkage block 4 and outer tube, in the left inside wall of linkage block 4 and the right side Wall is respectively arranged with one first linkage flange 6, and two first linkage flanges 6 of side wall correspondence of outer tube open up two first Dynamic hole, the first linkage flange 6 is caught in the first linkage hole, in this embodiment, and the first linkage hole is through hole, the first linkage flange 6 End face be plane, it through first linkage Kong Bingyu inner sleeves outer wall gap coordinate, so first linkage flange 6 end face It relative can be slided with the outer wall of inner sleeve, and there is space, first between the outer wall of inner sleeve and the inwall of outer tube The part that dynamic flange 6 stretches out outer sleeve inner wall can fill up this space to a certain extent, make inner sleeve fortune relative with outer tube More stablize when dynamic；The side wall of first linkage flange 6 is brought into close contact with the first hole wall for linking hole, is made between them Connection it is relatively reliable.Further, since the effect in the first linkage linkage of flange 6 and first hole is to ensure that linkage block 4 and outer tube Between the fixation surely leaned on, so the first linkage hole can also be blind hole, now the first linkage flange 6 can't fill up inner sleeve Space between outer wall and the inwall of outer tube.

The first linkage tool of flange 6 tangent plane 6-1, tangent plane 6-1 from the junction of the first linkage flange 6 and linkage block 4 obliquely The end face of the first linkage flange 6 is extended to, the intersection between tangent plane 6-1 and the inwall of linkage block 4 is parallel to horizontal plane and position In the highest point of the first linkage flange 6；Outer tube is assembled with linkage block 4, in the endoporus of the lower end insertion linkage block 4 of outer tube When, the lower end of outer tube receives tangent plane 6-1 guiding, along tangent plane 6-1, and the first linkage flange 6 is easier to insert the first linkage Kong Zhong, improves efficiency of assembling.

Middle pipe 2 is square tube, and the outline of the cross section of linkage block 4 is the rectangle matched with the endoporus cross section of middle pipe 2, connection The outer wall of motion block 4 is fitted with the inwall of middle pipe 2, in this embodiment, and four outer walls of linkage block 4 offer two second linkages Hole 4-1, the first shim 5 has four, and the inner surface of four the first shims 5 is fitted with four outer walls of middle pipe 2 respectively, right Answer and be provided with two second on the second linkage hole 4-1 on different outer walls, the inwall of four the first shims 5 in linkage block 4 Linked flange 7, and the second linkage flange 7 is penetrated in middle second linkage of the insertion of pipe 2 hole 4-1, the outer wall and second of the second linkage flange 7 Linkage hole 4-1 hole wall, which coordinates, to be fixed, it is ensured that be reliably connected；Outer tube 3 is set in outside middle pipe 2, the appearance of four the first shims 5 Fit and relative with outer tube 3 can be slided with four inwalls of outer tube 3 respectively in face.

This same table also includes the second shim 8 and installing plate 9, and four side walls of inner tube 1 offer two the respectively Three linkage holes, the inner surface of four the second shims 8 fits with four outer walls of inner tube 1 respectively, each second shim 8 it is interior The linkage hole of surface correspondence the 3rd is provided with two the 3rd linkage flanges 10, and the 3rd linkage flange 10 insertion the 3rd links in hole, The side wall of 3rd linkage flange 10 and the hole wall in the 3rd linkage hole, which coordinate, to be fixed.The outline of the cross section of installing plate 9 is rectangle, Match with the cross section of the endoporus of outer tube 3, four side walls of installing plate 9 are fitted with four inwalls of outer tube 3 respectively, installing plate 9 four side walls offer screwed hole 9-1, and the side wall correspondence screwed hole 9-1 of outer tube 3 opens up through hole, outer tube 3 is passed through with screw On through hole screw in screwed hole 9-1, outer tube 3 is fixedly connected with installing plate 9；Four locating dowels of correspondence of installing plate 9 are provided with Through the spacing hole 9-2 of upper and lower surface, locating dowel is inserted in corresponding spacing hole 9-2, in the circumferential to inner sleeve 900 are fixed, and the lower surface of locating piece 1300 offers the self tapping hole 1303 upwardly extended between two parties, are beaten by tapping screw Enter locating piece 1300 and the axial restraint of installing plate 9 in self tapping hole 1303.

Truss includes：

Crossbeam 12, two crossbeams 12 be arranged in parallel, each crossbeam 12 include intermediate beam 12-1, two other pipe 12-2 and Two short tube 12-3, intermediate beam 12-1 two ends are inserted in two other pipe 12-2 and connection fixed thereto respectively, two other pipe 12- 2 other end inserts a short tube 12-3 and connection fixed thereto respectively；Multiple stiffeners are provided between two crossbeams 12 13, the two ends of stiffener 13 are vertical with relative two other pipe 12-2 respectively to be fixed；

Support arm 14, support arm 14 includes two vertically fixed flangings, and the quantity of support arm 14 is two；One support One flanging of arm 14 is fixedly connected with two short tube 12-3 of the homonymy of two crossbeams 12, its another flanging and desktop 11 It is fixedly connected；One flanging of another support arm 14 is fixedly connected with the homonymy another two short tube 12-3 of two crossbeams 12, it Another flanging be fixedly connected with desktop 11；

Drive mechanism includes motor 15 and motor casing 16, and motor 15 is fixed in motor casing 16, and two motor casings 16 are fixed Between two crossbeams 12, they are set close to two support arms 14 respectively, and the bottom surface of motor casing 16 and the upper end of inner tube are fixed Connection；

Transmission mechanism includes turbine 17, worm screw and drive link 18, and turbine 17 and worm screw are arranged in motor casing 16, motor 15 Output shaft coaxially fixed with worm screw, the helical tooth of worm screw is engaged with the tooth of turbine 17, and one end of drive link 18 and turbine 17 are same Axle is fixed, and other end is fixedly connected through the bottom of motor 15 with drive end.

This same table also includes four corner braces 19 and two footing 20, a flanging of four corner braces 19 respectively with four It is fixedly connected on the outside of other pipe 12-2, a flanging is fixedly connected with desktop 11 in addition；Screwed hole, bottom are offered on installing plate 9 Screwed hole on pin on correspondence installing plate 9 offers through hole, so that installing plate 9 be fixedly connected with footing 20.

This same table drives inner screw 100 to rotate in uphill process by drive device, due to being oriented to flower part 200 To external screw rod 300 provide torsion, drive external screw rod 300 rotate together, installing plate 9 with footing 20 due to fixing, so it is Fixed, locating piece 1300 is fixedly connected with installing plate 9, therefore the nut 1000 of inner sleeve 900 and second is fixed, external screw rod 300 rotate while protrude upward, and guide runner 1200 is with the rising of external screw rod 300 in inner sleeve 900 and inner sleeve 900 inwall is relative to be slided；Due to the cooperation by external splines 202 and internal spline, inner screw 100 and external screw rod 300 are in circumference On be relatively fixed, in the axial direction relatively freely, and the first nut 500, outer tube 800, bearing 400 and external screw rod 300 are relative Fixed, inner screw 100 will be raised above relative to external screw rod 300 when rotated；When drive device driving inner screw 100 is reverse During rotation, inner screw 100 and external screw rod 300 then decline simultaneously, so as to realize the purpose of synchronization lifting.Due to the upper end of inner tube 1 Fixed with desktop 11, and desktop 11 is fixedly connected with motor casing 16, when desktop 11 is risen or declined by inner screw 100, desktop 11 can drive inner tube 1 to move, and middle pipe 2 links with outer tube 800, when outer tube 800 rises or falls, and middle pipe 2 is also synchronous to be risen Drop, outer tube is fixed, so when this same table is in lifting, from outside sense organ, inner tube 1 and middle pipe 2 are synchronization liftings , it is consistent with actual motion process.

In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show The description of example " or " some examples " etc. means to combine specific features, structure, material or the spy that the embodiment or example are described Point is contained at least one embodiment of the present utility model or example.In this manual, to the schematic table of the term State and be not necessarily referring to identical embodiment or example.Moreover, specific features, structure, material or the feature of description can be Combined in an appropriate manner in any one or more embodiments or example.

Using it is above-mentioned according to desirable embodiment of the present utility model as enlightenment, pass through above-mentioned description, related work people Member can carry out various changes and amendments in the range of without departing from this utility model technological thought completely.This reality The content on specification is not limited to new technical scope, it is necessary to its technology is determined according to right Property scope.

Claims (10)

1. a kind of same table, including lifting column, desktop, drive mechanism, transmission mechanism and truss, it is characterised in that the liter Drop column includes：

Inner screw, the upper end of the inner screw is drive end, and the lower end of the inner screw is fixed with guiding flower part, the inner screw External screw thread is provided with positioned at drive end and the outer wall being oriented between flower part；

External screw rod, the external screw rod is divided into upper, middle and lower from top to bottom, and the outer wall on the top and the inner ring of bearing are matched somebody with somebody Close, the outer wall at the middle part, which is provided with external screw thread, the nearly lower end of outer wall of the bottom, is fixed with guide runner；The inner screw is inserted In the inner chamber for entering external screw rod, described be oriented to spends the inwall of part and external screw rod to be relatively fixed in the circumferential；

First nut, the epimere of first nut has internal thread, and hypomere has bearing chamber, and the bearing is arranged on the axle Hold in room and its outer ring and the side wall of the bearing chamber coordinates, the internal thread of first nut and the external screw thread of inner screw are matched somebody with somebody Close；

Second nut, second nut is arranged on the lower section of first nut, internal thread and the outer spiral shell of second nut The external screw thread of bar coordinates；

It is described in inner sleeve, external screw rod insertion inner sleeve and the inwall of the guide runner and inner sleeve is slidably matched Second nut is fixedly connected with the upper end of inner sleeve；

Outer tube, the outer tube is set in outside inner sleeve and its upper end is fixedly connected with first nut；

Inner tube, said inner tube is set in outside the outer tube, and said inner tube links with the inner screw；

Middle pipe, the middle pipe sleeve is located at outside said inner tube, and the middle pipe links with the outer tube；

Outer tube, the outer tube is set in outside the middle pipe；

The drive mechanism is coupled by transmission mechanism with the drive end of inner screw, described for driving the inner screw to rotate Drive mechanism and transmission mechanism are fixedly connected with the truss, and the upper end of said inner tube is fixedly connected with the truss, described Desktop is fixed on the truss.

2. same table as claimed in claim 1, it is characterised in that：The lifting column also includes linkage unit, the linkage Component is arranged between outer tube and middle pipe, and the lower end of the middle pipe grows the part of said inner tube and the linkage unit is fixed Connection, the part that the lower end of the outer tube grows said inner tube is fixedly connected with the linkage unit；The linkage unit bag Linkage block and the first shim are included, the linkage block is set on the outer tube, the inwall of the linkage block and outer tube Outer wall is fitted, and the inwall of the linkage block is provided with least one first linkage flange, and the side wall correspondence of the outer tube is described First linkage flange opens up the first linkage hole, and the first linkage flange is caught in the first linkage hole；

The outer wall of the linkage block is fitted with the inwall of middle pipe, and the outer wall of the linkage block offers at least one second linkage Hole, the inner surface of first shim is fitted with the outer wall of middle pipe and the corresponding second linkage hole is provided with the second linkage Flange, the second linkage flange is penetrated in middle pipe insertion the second linkage hole, the outer surface of first shim with it is outer The inwall laminating of pipe relative with outer tube can simultaneously be slided.

3. same table as claimed in claim 2, it is characterised in that：The first linkage flange tool tangent plane, the tangent plane is from institute The junction for stating the first linkage flange and linkage block extends to the end face of the first linkage flange, the tangent plane and connection obliquely Intersection between the inwall of motion block is parallel to horizontal plane and positioned at the highest point tangent plane of the first linkage flange.

4. same table as claimed in claim 3, it is characterised in that：The lifting column also includes the second shim, described interior The side wall of pipe offers at least one the 3rd linkage hole, and the inner surface of second shim is fitted with the outer wall of inner tube, described Inner surface correspondence the 3rd linkage hole of second shim is provided with the 3rd linkage flange, the 3rd linkage flange insertion institute State in the 3rd linkage hole.

5. same table as claimed in claim 4, it is characterised in that：The lifting column also includes spacing block and stripper loop, institute The quantity for stating bearing is two, and the spacing block, which is arranged between two bearings and fixed with first nut, to be connected Connect；The stripper loop is arranged between two bearings, and the inwall of the stripper loop and the outer wall on the top coordinate, outer wall Coordinate with the inwall of the spacing block, the inner ring of the upper surface and lower surface of the stripper loop respectively with two bearings is close Recline；

The outer wall on the top offers and shaft block ring is embedded with first annular groove, the first annular groove, the axle gear The part of the first annular groove of circle protrusion is pressed on the inner ring of the bearing of top；

Locating convex block is provided with the outer wall of the spacing block, the first nut correspondence locating convex block offers positioning hole, institute Locating convex block is stated to be caught in positioning hole.

6. same table as claimed in claim 5, it is characterised in that：The outer wall of first nut is provided with the first seam, institute The cylindroid for stating the first seam is stretched into outer tube and coordinated with the inwall of outer tube, and the ring surface of first seam is pressed in On the upper surface of the outer tube；

The outer wall of second nut is provided with the second seam, the cylindroid of second seam stretch into inner sleeve and with it is interior The inwall of sleeve pipe coordinates, and the ring surface of second seam is pressed on the upper surface of the inner sleeve；

It is provided with the outer wall of first nut on the first locating slot, the outer wall of second nut and is provided with the second positioning Groove, the outer tube correspondence first locating slot is provided with the first positioning convex, and the first positioning convex insertion first is determined In the groove of position, inner sleeve correspondence second locating slot is provided with the second positioning convex, the second positioning convex insertion the In two locating slots；

The outer wall for being oriented to flower part is in cylinder, and described be oriented on the outer wall of flower part is provided with external splines, the external screw rod The correspondence external splines is provided with internal spline on inwall, and the external splines coordinates with internal spline.

7. same table as claimed in claim 6, it is characterised in that：The lifting column also includes locating piece and installing plate, institute The outer wall for stating locating piece is provided with the 3rd seam, the cylindroid of the 3rd seam from lower end stretch into inner sleeve in and and inner sleeve Inwall coordinate, the ring surface of the 3rd seam is pressed on the lower surface of the inner sleeve, and the bottom of the locating piece is provided with At least two locating dowels, the lower surface of the locating piece offers the self tapping hole upwardly extended between two parties；The installing plate and outer tube Side wall be fixedly connected, the installing plate correspondence locating dowel is provided through the spacing hole of upper and lower surface, described In locating dowel insertion spacing hole.

8. same table as claimed in claim 7, it is characterised in that：The truss includes：

Crossbeam, two crossbeams are be arranged in parallel, and multiple stiffeners are fixedly connected between two crossbeams；

Support arm, the support arm includes two vertically fixed flangings, and the quantity of the support arm is two；One support arm A flanging be fixedly connected with homonymy one end of two crossbeams, its another flanging is fixedly connected with desktop；Another branch One flanging of brace is fixedly connected with the homonymy other end of two crossbeams, and its another flanging is fixedly connected with desktop；

The drive mechanism includes motor and motor casing, and the motor is fixed in the motor casing, and two motor casings are consolidated It is scheduled between two crossbeams, they are set close to two support arms respectively, the bottom surface of the motor casing and inner tube Upper end is fixedly connected；

The transmission mechanism includes turbine, worm screw and drive link, and the turbine and worm screw are arranged in the motor casing, the electricity The output shaft of machine is coaxially fixed with worm screw, and the helical tooth of the worm screw is engaged with the tooth of turbine, one end of the drive link and institute State turbine coaxially to fix, other end is fixedly connected through the bottom of the motor with the drive end.

9. same table as claimed in claim 8, it is characterised in that：The crossbeam includes intermediate beam, two sides and managed and two short Pipe, the two ends of the intermediate beam are inserted in two other pipes and connection fixed thereto, other the one of described two other pipes respectively A short tube and connection fixed thereto, the flanging and the homonymy of two crossbeams of the support arm are inserted in end respectively Two short tubes of one end are fixedly connected.

10. same table as claimed in claim 9, it is characterised in that：Also include multiple corner braces and two footing, the corner brace One flanging on the outside of other pipe with being fixedly connected, and a flanging is fixedly connected with desktop in addition；Two installing plates respectively with Two footing are fixedly connected.