CN108903236A

CN108903236A - Lifting desk, lifting sofa and Height-adjustable

Info

Publication number: CN108903236A
Application number: CN201810803903.1A
Authority: CN
Inventors: 邢立天; 邢川明
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-06-08
Filing date: 2018-07-20
Publication date: 2018-11-30
Also published as: CN109820333A

Abstract

The present invention relates to desk, sofa and beds.The present invention will provide the lifting desk, lifting sofa and Height-adjustable that a kind of structure is simply adjustable height.A kind of lifting desk (or lifting sofa or Height-adjustable), lifting desk (or lifting sofa or Height-adjustable) includes desk body (or sofa body or bed body) and flexible leg device, flexible leg device includes left leg support, right leg support, screw rod and operating mechanism, left leg support and right leg support are all mainly rotatablely connected at a certain distance from respectively from upper end by two support members, left leg support and right leg support are all mounted on desk body (or sofa body or bed body) below, one support member upper end of left leg support and right leg support and a nut are rotatablely connected or two support member upper ends are respectively rotatablely connected with a nut, screw rod left part is matched with the nut that the support member upper end of left leg support is rotatablely connected, screw rod right part is matched with the nut that the support member upper end of right leg support is rotatablely connected, operating mechanism is mounted on screw rod and matches with screw rod.This table, sofa, bed are simple and are turned up conveniently.

Description

Lifting desk, lifting sofa and Height-adjustable

Technical field

The present invention relates to desk, sofa and beds, and in particular to lifting desk, lifting sofa and the lifting of adjustable height Bed.

Background technique

The height of general desk, sofa and bed is all fixed and invariable, but people's individual is wished with the Bu Tong total of period It is adjustable their height.Application No. is a kind of 201710828097.9 entitled student's intelligent desks, application No. is A kind of 201710875542.7 entitled upright old man's couch of auxiliary, application No. is 201710985757.4 entitled Height-adjustables etc. Chinese patent application just respectively describes the desk, sofa and bed for being adjustable height.This several patent all uses feed screw nut vertical Setting manipulates their relative rotations with electricity consumption motivation is merged, to be made into desk, sofa and the bed that can be gone up and down.But they Structure is all complex.

Summary of the invention

The technical problem to be solved in the present invention is to improve to the prior art, provides one under same inventive concept Kind structure is simply adjustable the lifting desk, lifting sofa and Height-adjustable of height.

The present invention solve above-mentioned technical problem technical solution be.

A kind of lifting desk, this lifting desk include desk body and flexible leg device, and flexible leg device includes left leg support, right leg Frame, screw rod and operating mechanism, left leg support and right leg support are all mainly rotatablely connected at a certain distance from respectively from upper end by two support members It forms, the upper end of two support members of left leg support is placed on desk body left part in the following, the upper end of two support members of right leg support is placed on the desk body right side Portion is in the following, the upper end that the upper end of a support member of left leg support and desk body are rotatablely connected another support member constrains in an energy left side below desk body It is rotatablely connected in a certain range of right sliding and with a nut, alternatively, the upper end of two support members of left leg support all constrains in table In a certain range that can horizontally slip below body and all respectively respectively with a nut rotation connection, a support member of right leg support it is upper The upper end that end is rotatablely connected another support member with desk body constrain in a certain range that can horizontally slip below desk body and with one Nut rotation connection, alternatively, the upper end of two support members of right leg support all constrains in a certain range that can be horizontally slipped below desk body Interior and be all respectively rotatablely connected respectively with nut, the nut that the support member upper end of screw rod left part and left leg support is rotatablely connected matches It closes, screw rod right part is matched with the nut that the support member upper end of right leg support is rotatablely connected, and operating mechanism is mounted in screw rod or desk body It is matched with screw rod, the support of contacting to earth of left leg support and right leg support lower end can make lifting desk stand on ground.

A kind of lifting sofa, this lifting sofa include sofa body and flexible leg device, and flexible leg device includes left leg support, the right side Leg support, screw rod and operating mechanism, left leg support and right leg support all mainly by two support members at a certain distance from respectively from upper end the company of rotation It connects, the upper end of two support members of left leg support is placed on sofa body left part in the following, the upper end of two support members of right leg support is placed on sand Hair body right part is in the following, the upper end that the upper end of a support member of left leg support and sofa body are rotatablely connected another support member constrains in sofa It is rotatablely connected in a certain range that can be horizontally slipped below body and with a nut, alternatively, the upper end of two support members of left leg support It all constrains in a certain range that can be horizontally slipped below sofa body and all distinguishes and be respectively rotatablely connected with a nut, right leg support The upper end that the upper end of one support member and sofa body are rotatablely connected another support member constrains in can horizontally slip below sofa body one Determine to be rotatablely connected in range and with a nut, alternatively, the upper end of two support members of right leg support all constrains in energy below sofa body Distinguish in a certain range to horizontally slip and all and be respectively rotatablely connected with a nut, the support member upper end of screw rod left part and left leg support turns The nut of dynamic connection matches, and screw rod right part is matched with the nut that the support member upper end of right leg support is rotatablely connected, operating mechanism peace It is matched on screw rod or sofa body with screw rod, the support of contacting to earth of left leg support and right leg support lower end can make lifting sofa stand on ground Face.

A kind of Height-adjustable, this Height-adjustable include bed body and flexible leg device, and flexible leg device includes left leg support, right leg support, Screw rod and operating mechanism, left leg support and right leg support be all mainly rotatablely connected at a certain distance from respectively from upper end by two support members and At the upper end of two support members of left leg support is placed on bed body left part in the following, the upper end of two support members of right leg support is placed on bed body right part In the following, the upper end that the upper end of a support member of left leg support and bed body are rotatablely connected another support member, which constrains in below bed body, to be controlled It is rotatablely connected in a certain range of sliding and with a nut, alternatively, the upper end of two support members of left leg support all constrains in bed body Distinguish in a certain range that can be horizontally slipped below and all and is respectively rotatablely connected with a nut, the upper end of a support member of right leg support The upper end for being rotatablely connected another support member with bed body constrain in a certain range that can be horizontally slipped below bed body and with a spiral shell Mother's rotation connection, alternatively, the upper end of two support members of right leg support all constrains in a certain range that can be horizontally slipped below bed body And be all respectively rotatablely connected respectively with a nut, screw rod left part is matched with the nut that the support member upper end of left leg support is rotatablely connected, Screw rod right part is matched with the nut that the support member upper end of right leg support is rotatablely connected, and operating mechanism is mounted in screw rod or bed body and silk Bar matches, and the support of contacting to earth of left leg support and right leg support lower end can make Height-adjustable stand on ground.

Desk, sofa, bed have leg.Desk body is the main part outside desk removing leg.Sofa body is that sofa removes outside leg Main part.Bed body is the main part outside bed removing leg.Left leg support and right leg support are all mainly by two support members respectively from upper It is rotatablely connected at a certain distance from end, can be exactly to be rotatablely connected at a certain distance from respectively from upper end by two support members, Be also possible to two support members respectively from upper end at a certain distance from rotation connection made of on the basis of increase other beneficial parts and It is made into.Operating mechanism is the mechanism that screw rod can be made to rotate and reverse to make lifting desk or lifting sofa or Height-adjustable go up and down.

Support member is the component for forming leg support and playing a supportive role.Support member has length, width, thickness.To make to support steady support member Generally use the biggish wide support member of the smaller width of thickness.Due to the length relation between support member to be related to, it is to describe herein How the length of support member determines.The length of support member should be determined with the place of upper and lower side top lifting Zhi Zuoyong, that is, upper and lower side position. No matter each position in width support member upper end of support member is substantially on the same line, each position in support member lower end is also substantially the same as always On line.It is known as upper end position by the straight line of each position in support member upper end, lower end is known as by the straight line of each position in lower end Position.The upper end position and lower end position of support member are substantially parallel to one another.The length of support member is exactly support member upper and lower side The distance of position.However, support member will rotate, the support member upper and lower side topmast position and upper and lower side position after rotation are all Have some variations, there are also variations for the use length of support member, thus, it would be desirable to find closest to each position of upper and lower side and The reference line of constant upper and lower side determines the length of support member again.Support member upper end be rotatablely connected or horizontally slip cooperation have hole or The axis of axis, this hole or axis is exactly the straight line constant close to upper end position, can be used as the reference line of support member upper end.Under support member End to contact to earth support using support member it is upright when lower end position as lower end reference line.Support member lower end to be rotatablely connected, certainly It is exactly using the axis of rotation connection as lower end reference line.The upper end reference line and lower end reference line of support member are substantially parallel to one another. The length of support member is exactly the distance of its upper and lower side reference line.From exactly upper end reference line is long along support member at a certain distance from support member upper end The direction somewhere with a certain distance from upper end in parallel.

Two support members namely pass through two support member upper end reference lines as the upward angle that vertex is formed to be rotatablely connected axis The upward dihedral angle formed with two planes of rotation connection axis is known as the angle of two support members.The angle of two support members becomes larger leg support It will reduce, the angle leg support that becomes smaller will increase.

Rectangular slab, trapezoidal plate all can serve as wide support member.The wide support member of rectangular slab is known as the wide support member of square plate.The wide support member of trapezoidal plate The referred to as wide support member of gangboard.The multi-purpose rod piece of wide support member, which is fastenedly connected, is integrated composition.The wide support member weighing lever being made of rod piece connection is wide Support member.Have in the wide support member of bar left side bar and the right bar and left side bar and the right bar basically perpendicular to upper and lower side reference line and up and down End group directrix this wide support member of bar as constituting rectangle is known as the wide support member of square bar.There are left side bar and the right in the wide support member of bar Bar but upper and lower side reference line or a side rod are all not orthogonal to basically perpendicular to upper and lower side reference line, this left and right side rod and upper and lower end group Directrix as constitute it is trapezoidal this wide support member of bar be known as the wide support member of ladder bars.It is above-mentioned width support member in the wide support member of square bar preferably I Preferential use.As long as the left and right leg support lower end that it is constituted regardless of support member is contacted to earth, support can make lifting desk or lifting husky It is exactly support member here that hair or Height-adjustable, which stand on ground,.The support of contacting to earth of left and right leg support lower end can make lifting desk or lifting sofa Or it is that leg support lower end has phase to contact to earth from farther away multiple spot that Height-adjustable, which stands on ground,.

The upper end of support member constrains in a certain range that can be horizontally slipped below desk body or sofa body or bed body and can also say and be The upper end of support member constrains in below desk body or sofa body or bed body in a certain range of energy side-to-side movement.Usually pass through desk body or sand Horizontal guide grooves below hair body or bed body are constrained in support member upper end in a certain range that can be horizontally slipped by axis.

Screw rod is the bar for being formed with screw thread.Screw rod and nut cooperate, since nut and support member upper end are rotatablely connected, screw rod rotation When nut will not with screw rod rotate and can be axially moved along screw rod.Nut can drive end motion in support member along screw rod axial movement And change the angle of two support member of left and right leg support.As long as we design the thread rotary orientation that screw rod and each nut cooperate and lead can To accomplish, the angle of two support members of left leg support and right leg support becomes larger simultaneously when screw rod is rotated to some direction, and screw rod is to another The angle of two support members of left leg support and right leg support becomes smaller simultaneously when one direction rotation.

This leg device that stretches is installed on desk body or sofa body or bed body in the following, allowing by us as described in technical solution The support of contacting to earth of left leg support and right leg support lower end makes lifting desk or lifting sofa or Height-adjustable stand on ground, passes through operating mechanism Make the angle of two support members of left and right leg support to a direction rotary screw rod while lifting desk or lifting sofa will be made when becoming larger Or Height-adjustable reduce, by operating mechanism to other direction rotary screw rod make left and right leg support two support members angle and meanwhile become smaller When this lifting desk or lifting sofa or Height-adjustable will be made to increase.Screw rod and nut can self-locking motionless guarantees when rotary screw rod Just height is constant herein for lifting desk or lifting sofa or Height-adjustable.This Retractive leg apparatus structure is again simple, in this way it is of the invention just Lifting desk, lifting sofa and Height-adjustable that a kind of structure is simply adjustable height are provided under same inventive concept.

We identical can make desktop or sofa face or bed surface holding horizontal for what left leg support and right leg support were done.We lead to again The axial movement for crossing desk body or sofa body or bed body limitation screw rod just makes lifting desk or lifting sofa or Height-adjustable more stable.Leg The settable idler wheel in frame lower end, be arranged idler wheel after go up and down when leg support lower end to move over the ground it is also harmless.

We allow left leg support and right leg support respectively mainly by a long support member and a short support member in the lower end of short support member The midpoint of place and long support member is rotatablely connected, and the length of long support member is allowed to be two times of short support member length, allows left leg support and the right side The equal length of the long support member of leg support, allow left leg support and right leg support short support member equal length, by left leg support and right leg support The upper end of short support member is all rotatablely connected with desk body (or sofa body or bed body), all by the upper end of left leg support and the long support member of right leg support It constrains in a certain range that desk body (or sofa body or bed body) can horizontally slip below and all distinguishes and respectively rotated with a nut Connection.It can prove lifting desk (or lifting sofa or Height-adjustable) left and right leg support during liter or drop worked it out in this way Lower end can accomplish not slide ground substantially.

We allow left leg support and right leg support mainly to be existed respectively by the wide support member of one long square bar and the wide support member of one short square bar It is rotatablely connected at the lower end of the short wide support member of square bar with the midpoint of the long wide support member of square bar, the length of the long wide support member of square bar is allowed to be Two times of the short wide support member length of square bar, allow left leg support and right leg support the long wide support member of square bar equal length, allow left leg support and the right side The equal length of the short wide support member of square bar of leg support, by the upper end of left leg support and the short wide support member of square bar of right leg support all with desk body (or Sofa body or bed body) rotation connection, the upper end of left leg support and the long wide support member of square bar of right leg support is all constrained in into desk body (or sofa Body or bed body) in a certain range that can horizontally slip below and all respectively respectively with a nut rotation connection.It can prove in this way The lifting desk (or lifting sofa or Height-adjustable) worked it out can be accomplished leg support lower end in left and right substantially during liter or drop Ground is not slided.

We are mainly rotated left leg support and right leg support by the support member of two equal lengths in their lower end respectively It is formed by connecting, the length of the support member of left leg support is allowed to be equal to the length of the support member of right leg support, by two supports of left leg support and right leg support Part upper end all constrains in desk body（Or sofa body or bed body）In a certain range that can horizontally slip below and all distinguish respectively with one Nut rotation connection.It can prove the lifting desk (or lifting sofa or Height-adjustable) worked it out in this way during liter or drop Left and right leg support lower end can also accomplish not slide ground substantially.

We are by left leg support and right leg support respectively mainly by the wide support member of square bar of two equal lengths in their lower end Place is rotatablely connected, and allows the length of the wide support member of square bar of left leg support to be equal to the length of the wide support member of square bar of right leg support, by left leg The wide support member upper end of two square bars of frame and right leg support all constrains in desk body（Or sofa body or bed body）Can horizontally slip below one Determine in range and to be all respectively rotatablely connected with a nut respectively.Lifting desk (or the lifting sofa that can prove to work it out in this way Or Height-adjustable) leg support lower end in left and right can also accomplish not slide ground substantially during liter or drop.

Higher to rise flexible leg device or so leg support, left leg support and right leg support are all made into the wide support member of square bar by we Multistage leg support.Two isometric wide support members of square bar are got up just to become the one of multistage leg support in their midpoint rotation connection Grade.Successively the upper end of the lower end Fen Do of two wide support members of square bar of upper level leg support and two wide support members of square bar of next stage leg support is turned Dynamic connect becomes multistage leg support.The difference that most next stage leg support can be done, two support member lower ends can contact to earth respectively or be total to It contacts to earth together or only one support member lower end is contacted to earth.The lifting multistage leg support that end group does not originally slide over the ground at present can be made.

The support member of leg support is typically constructed of metal, even if not sliding over the ground it is also possible to injuring substantially when leg support lower end is gone up and down Ground, for this purpose, we are in the leg support lower end setting plastic tip not slided over the ground substantially or rubber end or movable end.Activity End and leg support lower end are rotatablely connected, it has big ground plane not injure ground.

When wide support member upper end and nut are rotatablely connected, to make wide support member upper end both sides transport synchronization, we usually allow width to support Part upper center and nut are rotatablely connected.Synchronization is transported but to protect wide support member upper end both sides, we can also allow wide support member upper end logical It crosses and is rotatablely connected with the bidentate wheel shaft of double rack cooperation and nut, with the cooperation of two identical gears rack gear identical with two respectively To guarantee that synchronization is transported on wide support member upper end both sides.

There are many type of operating mechanism, and will take turns operating mechanism or sprocket wheel chain operating mechanism using wheel is pedaled here or shake Handle operating mechanism or motor-operating mechanism.Pedal wheel operating mechanism be mainly can with the wheel that pedal turns by it on the screw rod with Screw rod is matched or is matched by driving member with screw rod in desk body or sofa body or bed body.Sprocket wheel chain operating mechanism is just It is that they are matched with screw rod or be mounted in desk body or sofa body or bed body on screw rod by sprocket wheel chain as chain block It is upper to be matched by driving member with screw rod.Rocking handle operating mechanism be mainly exactly rocking handle by it matched on screw rod with screw rod or It is matched by driving member with screw rod in desk body or sofa body or bed body.Motor-operating mechanism includes motor, control line Road and driving member.Driving member is the component of passing movement, such as gear, pulley belt.They are mounted on desk body or sofa It is matched by driving member with screw rod on body or bed body.Installation mentioned here can also say it is to be made in.

People likes reclining sometimes, and therefore, Height-adjustable is made into the Height-adjustable of energy oblique adjusting degree by we, and lifting sofa is made into tune The lifting sofa of gradient.Screw rod left and right part is separated and to divide Do respectively matched by an operating mechanism, and allows bed body or sofa body Limit the axial movement of screw rod, so that it may be made into the Height-adjustable for being adjustable gradient or lifting sofa comes.

Lifting desk, lifting sofa and lifting bed structure of the invention is simple and convenient to operate, and people can be made to live study more Add fine.

Detailed description of the invention

Fig. 1 is a kind of main view of the lifting desk of embodiment 1.

Fig. 2 is the main view of a short support member in embodiment 1.

Fig. 3 is the left view of the short support member of Fig. 2.

Fig. 4 is the main view of a long support member in embodiment 1.

Fig. 5 is the left view of Fig. 4 long support member.

Fig. 6 is the top view that left even frame, left leg support and feed screw nut cooperate shape in Fig. 1.

Fig. 7 is a kind of main view of the lifting sofa of embodiment 2.

Fig. 8 is the main view of a support member in embodiment 2.

Fig. 9 is the left view of Fig. 8 support member.

Figure 10 is the top view that left even frame, left leg support and feed screw nut cooperate shape in Fig. 7.

Figure 11 is a kind of main view of the Height-adjustable of embodiment 3.

Figure 12 is the main view of a support member in embodiment 3.

Figure 13 is the main view of another support member in embodiment 3.

Figure 14 is the top view of the cooperation such as screw rod and nut, rocking handle shape in embodiment 3.

Figure 15 is the main view of the wide support member of square plate in a kind of lifting desk of embodiment 4.

Figure 16 is the main view of T-shaped support member in a kind of lifting desk of embodiment 5.

Figure 17 is the main view of single pole support member in a kind of lifting desk of embodiment 6.

Figure 18 is the main view of the wide support member of a gangboard in a kind of lifting sofa of embodiment 7.

Figure 19 is the main view of another wide support member of gangboard in a kind of lifting sofa of embodiment 7.

Figure 20 is the main view of the wide support member of a ladder bars in a kind of Height-adjustable of embodiment 8.

Figure 21 is the main view of another wide support member of ladder bars in a kind of Height-adjustable of embodiment 8.

Figure 22 is the main view of the left leg support of three-level in a kind of lifting desk of embodiment 10.

Figure 23 is the main view of second level leg support in a kind of lifting sofa of embodiment 11.

Specific embodiment

Embodiment 1.

A kind of lifting desk of embodiment 1 as shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6.A kind of lifting desk 1, this liter Dropping desk 1 includes desk body 2 and flexible leg device, and flexible leg device includes left leg support, right leg support, and screw rod 3 and operating mechanism 4 are left Leg support and right leg support are all mainly rotatablely connected at a certain distance from respectively from upper end by two support members, two support members of left leg support 5,6 upper end is placed on 2 left part of desk body in the following, the upper end of two support members 7,8 of right leg support is placed on 2 right part of desk body in the following, left leg support A support member 5 upper end and desk body 2 be rotatablely connected the upper end of another support member 6 and constrain in desk body 2 and can horizontally slip below It is rotatablely connected in a certain range and with a nut 9, the upper end of a support member 7 of right leg support and desk body 2 are rotatablely connected another The upper end of support member 8 constrains in a certain range that desk body 2 can horizontally slip below and is rotatablely connected with a nut, and screw rod 3 is left Portion is matched with the nut 9 that 6 upper end of support member of left leg support is rotatablely connected, and 8 upper end of support member of 3 right part of screw rod and right leg support, which rotates, to be connected The nut connect matches, and operating mechanism 4 is mounted on screw rod 3 and matches with screw rod 3, and left leg support and right leg support lower end are contacted to earth support Lifting desk 1 can be made to stand on ground.

The left leg support and right leg support of this example are all respectively mainly by a long support member and a short support member in the lower end of short support member The midpoint of place and long support member is rotatablely connected, and the length of long support member is two times of short support member length, left leg support and right leg support Long support member 6,8 equal length, the equal length of the short support member 5,7 of left leg support and right leg support, left leg support and right leg support it is short The upper end of support member 5,7 is all rotatablely connected with desk body 2, and the upper end of the long support member 6,8 of left leg support and right leg support all constrains under desk body 2 Distinguish in a certain range that face can horizontally slip and all and is respectively rotatablely connected with a nut.

The left leg support and right leg support of this example are all mainly existed by the wide support member of one long square bar and the wide support member of one short square bar respectively It is rotatablely connected at the lower end of the short wide support member of square bar with the midpoint of the long wide support member of square bar, the length of the long wide support member of square bar is short The equal length of the wide support member 6,8 of the long square bar of two times of the wide support member length of square bar, left leg support and right leg support, left leg support and right leg support The wide support member 5,7 of short square bar equal length, the upper end of the wide support member 5,7 of the short square bar of left leg support and right leg support all with 2 turns of desk body Dynamic connection, the upper end of the wide support member 6,8 of the long square bar of left leg support and right leg support all constrain in desk body 2 can horizontally slip below it is certain Distinguish in range and all and is respectively rotatablely connected with a nut.

Desk body 2 include the desktop of upper end, three drawers on top, lower part left cabinet 10 and right cabinet 11.Under left cabinet 10 Face is exactly below the left part of desk body 2.It is exactly below the right part of desk body 2 below right cabinet 11.Left cabinet 10 is below and below right cabinet 11 All in same level.

It is left even 12 rectangular frame-shaped of frame, by the unequal angle short side of four sections of same models face upward long side weld downwards and At.Preceding angle steel 13 and 14 short side of rear angle steel are outwardly.Left comer steel 15 and 16 short side of right corner steel are inwardly.It is left even frame 12 preceding angle steel 13 to Under long side on left part be drilled with hole, opened on the right of this hole and the holes such as the width of the guide groove 17 of hole same level and guide groove 17 Diameter.Also correspondence has done same hole and guide groove in the downward long side of the rear angle steel 14 of left frame 12.Left even 12 4 angle steel of frame Top face is drilled with multiple apertures, and just left even frame 12 make-up is mounted below the left cabinet 10 of desk body by these apertures with wood screw On solid wood, this left even frame 12 just becomes a part below 2 left part of desk body, below as the left part of desk body 2.Right even frame 18 It is symmetrically the same with left even frame 12, hole is drilled on the right of preceding angle steel 19, left side same level is provided with guide groove 20, also corresponds on angle steel thereafter Identical hole and guide groove are done.The size in hole and guide groove on right even frame is identical as the left even hole of frame and guide groove.Left and right is even on frame Hole and guide groove all in the same horizontal position.Right even frame 18 and left even frame 12 tighten be installed on the right cabinet of desk body 2 in the same way On solid wood below 11, become a part below 2 right part of desk body, below the right part for just becoming desk body 2.

Support member 5 is as shown in Figure 2 and Figure 3.Support member 5 is welded by the left side bar 21, the right bar 22 and cross bar 25 of steel.It is left Side rod 21 and the right bar 22 are the long poles such as two that identical cross-section is hollow rectangle.Left side bar 21 and the right bar 22 are in Fig. 2 Middle leptoprosopy is wide forwards, backwards towards left and right.Left side bar 21 is parallel with the right bar 22.Transverse bar 25 is also the bar that cross section is hollow rectangle Part.Left side bar 21 and the right bar 22 are perpendicular to cross bar 25.The centerline in the wide face of left side bar 21 and 22 upper end of the right bar is drilled with The same circular hole of same axis.Center line, that is, axis by 22 upper end hole of left side bar 21 and the right bar is exactly the upper end of support member 5 Reference line.Left side bar 21 and 22 lower end of the right bar will also be drilled with same with the rotation connection of the support member 6 wide face centerline in its lower end The axis of the same circular hole of axis, this two bars lower end circular hole is exactly the lower end reference line of support member 5.This upper and lower side reference line is equal Row.The distance of this upper and lower side reference line is exactly the length of support member 5, that is, left side bar and the right bar from upper end hole center to lower stomidium The length at center.Left side bar and the right bar seem to constitute rectangle sample with them perpendicular to upper and lower side reference line, so this support member 5 It is the wide support member of square bar.

Support member 6 is as shown in Figure 4, Figure 5.Support member 6 is welded by the 23 the right bar 24 of left side bar and cross bar 26 and cross bar 27 of steel It connects.Left side bar 23 and the right bar 24 are the rod pieces with 5 or so side rod same model cross section of support member for hollow rectangle.It is left Distinguish a part of the lower end of grafting Ru ー plastic tip 28,29 one-tenth its bars in the lower end of side rod 23 and the right bar 24.Left side bar 23 and the right bar 24 be parallel to each other.On the left side, it is same with the wide face centerline in 24 upper end of the right bar to be drilled with same axis for bar 23 Circular hole and this Circularhole diameter is identical as the hole of 5 or so side rod upper end of support member.The axis of 24 upper end hole of this left side bar 23 and the right bar It is exactly the upper end reference line of support member 6.Namely pass through support by the straight line of minimum point among left side bar 23 and 24 lower end of the right bar Part 6 uprightly contact to earth lower end contact to earth position straight line be exactly support member 6 lower end reference line.This upper and lower side reference line is parallel.Support The length of part 6 is exactly the distance of this upper and lower side benchmark.This length i.e. 24 upper end central point of hole of left side bar 23 and the right bar are to lower end The length of intermediate lowest point.Left side bar 23 and the right bar 24 with upper and lower side reference line is perpendicular seems to constitute rectangle sample, this support member 6 It is also the wide support member of square bar.The length of support member 6 is two times of 5 length of support member.The midpoint that bar 23 and the right bar 24 are grown on the left side is also It is drilled with same axis circular hole identical with the lower stomidium of support member 5, this hole is exactly the hole of 6 midpoint of support member.The width of support member 6 is slightly smaller than The width of support member 5 can just be caught in the lower part of support member 5.

The hole that 5 the right bar of support member, 22 lower end is passed through with axis 30 passes through support member 6 across the hole of 6 the right bar of support member, 24 midpoint The hole of 23 midpoint of left side bar, across the hole of 5 left side bar of support member, 21 lower end, then, the both ends of axis 30 are inserted into 30 hole of axis with pin Under lock and key, just support member 5 and 6 rotation connection of support are got up as left leg support with the midpoint of support member 6 at the lower end of support member 5. Support member 5 and support member 6 are exactly left two support member angle of leg support using 30 axis of the axis angle upward as vertex.

The hole that 13 left side of angle steel before left even frame 12 is passed through with axis 31, across the hole of 5 the right bar of support member, 22 upper end, across support member The hole of 5 left side bar, 21 upper end, the corresponding hole in 14 left side of angle steel after left even frame 12, then the hole of axis 31 is inserted at both ends with pin Under lock and key, just 5 upper end of support member is rotatably connected in the left even hole of frame 12, i.e., is rotatablely connected with desk body 2.Nut 9 be one compared with Long nut.One section of steel pipe 32 is vertically welded with below nut 9.The guide groove 17 that left 12 the right of even frame is passed through with axis 33, wears The hole for crossing 6 the right bar of support member, 24 upper end, the hole of the steel pipe 32 below nut 9, across the hole of 6 left side bar of support member, 23 upper end, Across the left even corresponding guide groove of frame relief angle 14, just 6 upper end of support member and the rotation connection of nut 9 are got up, just constrain 6 upper end of support member In a certain range that can be horizontally slipped in the left even guide groove of frame 12, that is, constrain in certain model that desk body 2 can horizontally slip below In enclosing.Anti- axis 33 in 33 hole of steel pipe 32 and axis is tightly inserted in pin 42 to slide axially.It certainly can also be in 33 both ends washer of axis and pin Axis 33 is limited to its axial movement under lock and key.

Right even frame 18 and left even frame 12 are symmetrically the same.Right even frame 18 is mounted on 2 right side of desk body with the same manner with left even frame 12 Cabinet 11 becomes a part below 2 right part of desk body below.Support member 7 and support member 8 are all the wide support members of square bar.Support member 7 and 5 structure of support member It is identical.Support member 8 is identical as 6 structure of support member.8 the right bar of support member, 34 lower end is also plugged with 35 left side bar lower end also grafting of plastic tip There is same plastic tip to become the lower end of its left and right side rod.The length of support member 8 is also two times of 7 length of support member.Support member 7 and support member 8 are also got up at the lower end of support member 7 with the rotation connection of the midpoint of support member 8 with axis 39.Right angle steel before connecting frame 18 is passed through with axis 36 The hole on 19 the right passes through angle steel after right even frame across the hole of 7 left side bar upper end of support member across the hole of 7 the right bar of support member, 37 upper end The corresponding hole in the right, then both ends are inserted into 36 hole of axis under lock and key with pin, and 7 upper end of support member is just rotatably connected on right even frame 18 Hole in, i.e., with desk body 2 be rotatablely connected.It is also a longer nut as nut 9 with 8 upper end of support member rotation connection nut Also one section of steel pipe is vertically welded with below nut.The guide groove 20 that 19 left side of angle steel before right even frame 18 is passed through with axis 38, wears The hole for crossing 8 the right bar of support member, 34 upper end is worn across the hole of the steel pipe of nut described above across the hole of 8 left side bar upper end of support member The right even corresponding guide groove of frame relief angle is crossed, just 8 upper end of support member and nut rotation connection are got up, 8 upper end of support member is just constrained in into the right side In a certain range that can even horizontally slip in the guide groove of frame 18, that is, constrain in a certain range that desk body 2 can horizontally slip below. Also it is axially moved in the steel pipe of nut and the hole of axis 38 for having pin insertion and the rotation connection of 8 upper end of support member with limiting axis 38.

3 left part 40 of screw rod and the smaller middle part 41 of right part diameter are relatively large in diameter.3 middle part 41 of screw rod does not have screw thread.3 left part of screw rod 40 are formed respectively with screw pitch identical oppositely oriented single line trapezoidal thread with right part.The right corner steel 16 of left even frame 12 is to following midpoint Place is drilled with hole, and the left part 40 of screw rod 3 passes through this hole and matches with the nut 9 that 6 upper end of support member is rotatablely connected.3 right part of screw rod passes through Right even 18 left comer steel of frame is matched to the hole of following midpoint with the nut that 8 upper end of support member is rotatablely connected.Screw rod 3 or so when assembly Portion, which is symmetrically matched with the nut, to be made left leg support and right leg support the folder of support member is identical two-by-two.Left even frame right corner steel 16 and right company The hole of frame left comer steel limits the axial movement of screw rod 3 by the shaft shoulder of screw rod 3, that is, desk body 2 limits the axial movement of screw rod 3 ?.

Due to nut and support member upper end rotation connection therefore screw rod 3 rotate when nut will not with screw rod 3 rotate and can be along silk Bar 3 is axially moved and drives end motion in support member.Since the thread rotary orientation difference of 3 left part of screw rod with right part works as screw rod to a side It will be simultaneously by disturbing or deviating to two nuts cooperated when rotation with 3 left and right part of screw rod.Due to the thread form of 3 left and right part screw thread of screw rod Screw pitch lead is all identical, thus two nuts will constant speed by disturbing or deviating from.6 upper end of support member just be will drive when two nuts deviate to support 5 upper end of part is drawn close, and 8 upper end of support member is driven to draw close to 7 upper end of support member, so that two leg supports be made the angle of support member while to become smaller two-by-two Lifting desk will increase.6 upper end of support member just be will drive when two nuts are by disturbing far from 5 upper end of support member, drive 8 upper end of support member remote From 7 upper end of support member, to make the two leg supports angle of the support member while lifting desk that becomes larger will reduce two-by-two.

Lifting desk 1 is raised to most when guide groove left end and before and after 38 company's of keeping right frame of axis when guide groove right end before and after 33 company's of keeping left frame of axis Height.Lifting desk 1 drops to most when guide groove right end and before and after 38 company's of keeping right frame of axis when guide groove left end before and after 33 company's of keeping left frame of axis Low clearance.The height of general desk is 80 centimetres or so, I thinks that the minimum altitude of lifting desk be 70 centimetres of maximum heights is 1 Rice can.

3 left part screw thread of screw rod is made into left hand thread right part screw thread in terms of a left side and is made into right-handed thread by us, then screw rod 3 from A left side is seen when rotating in an anti-clockwise direction two nuts will constant speed deviate from, the angle of two support member of left and right leg support will synchronize the same table that becomes smaller Son 1 will increase, on the contrary rotationally clockwise when lifting desk will reduce.Our two support members of leg support said before it is this Length relation, rotation connection relationship and with the matching relationship lifting desk of desk body in lifting leg support lower end, that is, support member 6 and support member 8 Left and right side rod lower end do not slide over the ground substantially.

Operating mechanism 4 is to pedal wheel operating mechanism 4 exactly to pedal wheel 4 for one.It pedals wheel 4 and is close to by key and is connected to 41 in the middle part of screw rod 3 Middle part.Pedaling wheel 4 is a hollow wheel surface anti-skidding item.It is exactly to be used to operate the rotation of screw rod 3 and make 1 liter of lifting desk that this, which pedals wheel 4, Or the operating mechanism 4 of drop.

Lifting desk 1 contacts to earth supported standing on ground by left leg support and right leg support lower end.Under left leg support and right leg support End support of contacting to earth is exactly that the left side bar of support member 6 and support member 8 and the right bar lower end are contacted to earth support.It and the such lower end of conventional tables Have contact to earth at relatively far apart 4 points.Since symmetrically the same so that 1 desktop level of lifting desk is stood steady for left leg support and right leg support.

We are sitting on chair when working and studying needs to adjust table height on this lifting desk 1, as long as being turned with pedal Operating mechanism is pedaled wheel 4 and is achieved that.As long as turning to pedal wheel 4 in terms of a left side counterclockwise with pedal when we need lifting desk 1 to increase Rotation is just.As long as pedaling wheel 4 with pedal turn when we need lifting desk 1 to reduce to rotate clockwise in terms of a left side. You stablize without it will not rotate automatically lifting desk 1 due to the self-locking screw rod 3 of screw rod 3 and nut cooperation when pedaling wheel 4 This height.The 1 structure simple operations of this lifting desk are very convenient.

Right even 18 front and back guide groove of frame can be done on the right, front and rear gaps are made in the left side, and 7 upper end of support member is allowed to turn in left hole Dynamic connection, allowing 8 upper end of support member, guide groove horizontally slips and is rotatablely connected with nut on the right, but can be with, when lifting under support member 8 End is not slided still substantially over the ground, but asymmetric stress is bad.Two short support members 5,7 upper ends can be allowed to horizontally slip simultaneously in guide groove It is respectively rotatablely connected with nut, two long support members 6,8 upper ends is allowed to be rotatablely connected in hole, but can be with, but when going up and down, leg support lower end is Support member 6,8 lower ends will be slided over the ground, can fill idler wheel solution.

We, which change the desk body 2 of this example into sofa body just, becomes the lifting sofa for having this structure.The desk body 2 of this example is changed into Bed body just becomes the Height-adjustable for having this structure.If suspicion pedals wheel operating mechanism and sofa and bed inconvenience are operated, it is changed to sprocket chain Operating mechanism or rocking handle operating mechanism or motor-operating mechanism.

Embodiment 2.

A kind of lifting sofa of embodiment 2, as shown in Fig. 7, Fig. 8, Fig. 9, Figure 10.A kind of lifting sofa 45, this lifting are husky Hair 45 includes sofa body 46 and flexible leg device, and flexible leg device includes left leg support, right leg support, and screw rod 3 and operating mechanism 4 are left Leg support and right leg support are all mainly rotatablely connected at a certain distance from respectively from upper end by two support members, two support members of left leg support 5,6 upper end be placed on 46 left part of sofa body in the following, the upper end of two support members 7,8 of right leg support be placed on 46 right part of sofa body in the following, The upper end of two support members 5,6 of left leg support all constrains in a certain range that sofa body 46 can horizontally slip below and all each respectively It is rotatablely connected with a nut, the upper end of two support members 7,8 of right leg support all constrains in what sofa body 46 can horizontally slip below Distinguish in a certain range and all and be respectively rotatablely connected with a nut, the support member 5 of 3 left part of screw rod and left leg support, 6 upper ends are rotatablely connected Nut match, the nut that 3 right part of screw rod and the support member 7 of right leg support, 8 upper ends are rotatablely connected matches, and operating mechanism 4 is installed It is matched on screw rod 3 with screw rod 3, the support of contacting to earth of left leg support and right leg support lower end can make lifting sofa 45 stand on ground.

Support member 5, support member 6, support member 7, the length of support member 8 are all equal.Support member 5, support member 6, support member 7, support member 8 are all wide support members It and is all the wide support member of square bar.Left leg support is mainly rotatablely connected by support member 5 and support member 6 in lower end.Right leg support mainly by Support member 7 and support member 8 are rotatablely connected at lower end.

Sofa body 46 includes seat portion 47 and backrest 48.Seat portion 47 is above soft bullet part, there is square grid beam 49 below.Square grid beam 49 be the grid beam for assembling rectangular in form for the thicker rod of rectangular solid by the section Gen Transverse Si.Square grid beam 49 is below in same water In plane.

Left frame 12 also rectangular frame-shaped similar to the left frame of embodiment 1, by the unequal angle of four sections of same models The short side long side that faces upward is welded downwards.Preceding angle steel 13 and 14 short side of rear angle steel are outwardly.16 short side of left comer steel 15 and right corner steel Inwardly.Identical left guide groove 50 and right guide groove 51 have been done in the same horizontal position in the downward long side of preceding angle steel 13.Angle steel 14 afterwards Also same left guide groove and right guide groove have been done in corresponding position.The right even structure of frame 18 and left even frame 12 are symmetrically the same.Right even frame Left guide groove 52 identical with angle steel 13 before left even frame and right guide groove 53 have been done in the downward long side of 18 preceding angle steel 19.Right even frame 18 Same left guide groove and right guide groove have also accordingly been done on angle steel afterwards.Multiple holes are drilled on the left even top of 12 angle steel of frame, are passed through This multiple hole wood screw tightens below the left part for becoming sofa body 46 below the left part of 46 square grid beam 49 of sofa body.Right even frame Also it is drilled with multiple holes on the top of 18 angle steel, is tightened under the right part of 46 square grid beam 49 of sofa body by this multiple hole wood screw Face, below the right part for becoming sofa body 46.

Support member 5 as shown in Figure 8, Figure 9, by the left side bar 21 of steel, 22, Transverse bar 54 of the right bar side rod, is welded.The left side Bar 21, the right bar 22 are the rod pieces that the section Transverse Xiang Tong is hollow rectangle.Leptoprosopy is forward in terms of Fig. 8 for left side bar 21 and the right bar 22 It is wide towards from left to right backward.Cross bar 54 be also rod piece that cross section is hollow rectangle in terms of Fig. 8 it is wide forward backward.Left side bar 21 It is parallel to each other with the right bar 22.The vertical side rod ground auger of centerline of the left side bar 21 with the right bar 22 in the wide face in upper end has same The same circular hole of axis.It is also drilled with to the vertical side rod of centerline of the left side bar 21 with the right bar 22 in the wide face in lower end same The same circular hole of one axis.The axis of left and right side rod upper end hole is exactly the upper end reference line of support member 5.Left and right side rod lower end hole Axis is exactly the lower end reference line of support member 5.Upper and lower side reference line is parallel to each other.The length of support member 5 is exactly this upper and lower side reference line Distance, that is, left side bar 21 and 22 upper end hole center of the right bar are to the length at lower stomidium center.The left side bar 21 of support member 5 and the right side Side rod 22 and upper and lower side reference line it is perpendicular seem with they constitute rectangle sample, this support member 5 is the wide support member 5 of square bar.Support member 6 with Support member 5 is essentially identical, and different places is that point slightly narrower than support member 5 can be caught in 5 lower part of support member.6 left side bar 23 of support member and the right 24 upper and lower side of bar has also done same hole and the wide support member of square bar.Support member 6 and 5 equal length of support member.

Nut 55 is longer nut, to be rotatablely connected nut 55 and 5 upper end of support member, the upper surface of nut 55 vertically It is welded with one section of steel pipe 56.Mother 57 is longer nut, to be rotatablely connected nut 57 and 6 upper end of support member, in the upper of nut 57 Face is vertically welded with one section of steel pipe 58.

We do that there are four identical movable ends, and left and right leg support lower end to be allowed to contact to earth support by it herein.Movable end Such as the short section shape that channel steel is sawn into, bottom surface is flat preceding piece and rear block, is drilled with the circular hole of same axis in the centre of preceding piece and rear block.Axis 59 pass through the hole of block before movable end 60, across the hole of 5 the right bar of support member, 22 lower end, across the hole of 6 the right bar of support member, 24 lower end, The hole of block after movable end 60, the hole of block before movable end 61 are passed through across the hole of 6 left side bar of support member, 23 lower end Then 59 hole of axis is inserted into pin at the both ends of axis 59 in the hole of 5 left side bar of support member, 21 lower end, the hole of block after movable end 61 In just support member 5 and support member 6 are rotatablely connected at lower end under lock and key.

The left left guide groove 50 of angle steel 13 before connecting frame 12, which is passed through, with axis 62 passes through nut across the hole of 5 the right bar of support member, 22 upper end The hole of 55 steel pipe 56 passes through the corresponding left guide groove of angle steel 14 after left even frame, then across the hole of 5 left side bar of support member, 21 upper end It is inserted into the hole of steel pipe 56 and axis 62 under lock and key with pin 63,5 upper end of support member is just constrained in into the left even 12 left guide groove of front and back angle steel of frame In middle a certain range that can be horizontally slipped, i.e., in a certain range that constraint sofa body 46 can horizontally slip below.It is passed through with axis 64 The right guide groove 51 of angle steel 13 before left even frame 12, wears across the hole of 6 the right bar of support member, 24 upper end across the hole of the steel pipe 58 of nut 57 The hole of 6 left side bar of support member, 23 upper end is crossed, the corresponding right guide groove of angle steel 14 after left even frame 12 is passed through, is then inserted into steel pipe 58 with pin 65 With in the hole of axis 64 under lock and key, just by 6 upper end of support member constrain in it is left can be even horizontally slipped before and after frame in the right guide groove of angle steel it is certain In range, i.e., in a certain range that constraint sofa body 46 can horizontally slip below.

Right even 18 structure of frame is identical with left even frame 12.Right frame 18 also passes through right even frame angle steel top with wood screw Hole tightens a part for becoming sofa body right part below 49 right part of square grid beam.Support member 7 is identical as 5 structure of support member.Support member 8 with 6 structure of support member is identical.Support member 7 and support member 8 also as if support member 5 and the such lower end of support member 6 also by axis 66, preceding movable end 67 and after Movable end rotation connection is got up.

Support member 7 and 8 upper end of support member will be also rotatablely connected with the long nut for being welded with steel pipe above as nut 55,57.With Axis 68 passes through the right guide groove 53 of angle steel 19 before right even frame 18, across the hole of 7 the right bar of support member, 77 upper end, passes through support member 7 and is rotatablely connected The hole of steel pipe of nut pass through the corresponding right guide groove of angle steel after right even frame 18, then across the hole of 7 left side bar upper end of support member It is inserted into the hole of steel pipe and axis 68 under lock and key with pin, 7 upper end of support member is just constrained in into energy in the right even 18 right guide groove of front and back angle steel of frame In a certain range to horizontally slip, i.e., in a certain range that constraint sofa body 46 can horizontally slip below.Right company is passed through with axis 69 The left guide groove 52 of angle steel 19 before frame 18, across the hole of 8 the right bar of support member, 70 upper end, the steel pipe for the nut being rotatablely connected across support member 8 Hole pass through the corresponding left guide groove of angle steel after right even frame 18, be then inserted into nut with pin across the hole of 8 left side bar upper end of support member Steel pipe and axis 69 hole under lock and key, just by 8 upper end of support member constrain in it is right even can left and right cunning in the 18 left guide groove of front and back angle steel of frame In dynamic a certain range, i.e., in a certain range that constraint sofa body 46 can horizontally slip below.

Screw rod 3 is by left side 71（The i.e. described screw rod left part）With right side 72（The i.e. described screw rod right part）It is formed by connecting.Silk The left part 73 of 3 left side 71 of bar and right part 74 are formed with screw pitch identical oppositely oriented single line trapezoidal thread.3 left side of screw rod 71 is left 73 screw thread of portion is matched with the nut 55 that 5 upper end of support member is rotatablely connected, the nut of 74 screw thread of right part and the rotation connection of 6 upper end of support member 57 match.3 left side of screw rod, 71 left ends are non-threaded and diameter is smaller is set in left even 12 left comer steel 15 of frame to following midpoint Hole.3 left side of screw rod, 71 right end portion is also non-threaded and diameter is smaller is set in left even 12 right corner steel 16 of frame to following midpoint Hole.Axial the transporting that left comer steel 15 and right corner steel 16 pass through its hole and the 3 left side shaft shoulder of screw rod cooperation limitation 3 left-half 71 of screw rod It is dynamic, i.e. the axial movement of the left-half 71 of the limitation of sofa body 46 screw rod 3.

3 right half part of screw rod also as left-half, also there is left part screw thread and right part screw thread.3 right half part 72 of screw rod Left part screw thread is identical as 73 screw thread of left part of 3 left-half 71 of screw rod.3 right half part of screw rod, 72 right part screw thread and screw rod 3 left half Part 71 right part, 74 screw threads are identical.The left part screw thread of 3 right half part 72 of screw rod and the nut of 8 upper end of support member rotation connection match It closes.The right part screw thread of 3 right half part 72 of screw rod is matched with the nut that 7 upper end of support member is rotatablely connected.3 right side 72 of screw rod and the right side Even the mated condition of frame 18 and 3 left side 71 of screw rod and the mated condition of left even frame 12 are symmetrically the same, lesser left and right end It is inserted in the hole among right even 18 or so angle steel of frame and by axial the transporting of the shaft shoulder of hole and screw rod limitation 3 right half part 72 of screw rod It is dynamic.Here illustrate the left side 71 of screw rod 3 and right side 72 is just packed into wherein when a group weldering left and right connects frame.We are in assembly The upward angle of support member 5 and support member 6 is just set to be equal to the upward angle of support member 7 and support member 8.

Operating mechanism 4 is sprocket wheel chain operating mechanism 4.It includes sprocket wheel 75 and chain 76.Sprocket wheel 75 and 3 left side of screw rod 71 right parts and 72 left part of right side are coupled by spline, the silk that just 3 left side 71 of screw rod and right side 72 are connected Bar 3.Pull chain 76 that sprocket wheel 75 and screw rod 3 can be made to rotate.

Lifting sofa 45 is contacted to earth standing by four movable ends of left and right leg support lower end.Due to nut when screw rod 3 rotates It is rotatablely connected, therefore nut will not follow screw rod to rotate, and can be axially moved along screw rod 3 with support member upper end.Due to screw rod 3 left half Part and the left-hand thread of right half part identical right-hand thread is identical with right-hand thread with left-hand thread and left and right thread rotary orientation on the contrary, because This, if two nuts cooperated when screw rod 3 is rotated to a direction with left side will be mutually by disturbing, then with 3 right side of screw rod Two nut of cooperation will also synchronize mutually by disturbing, and at this moment the angle of support member will synchronize and become smaller left and right leg support two-by-two, at this moment rise Drop sofa 45 will increase.Cooperate in the opposite direction with two nuts of left side cooperation when rotary screw rod 3 and with right side Two nuts will synchronize and mutually deviate from, the angle of support member two-by-two of left and right leg support, which will synchronize, to become larger, and lifting sofa 45 will It reduces.Four movable ends of leg support lower end will not slide substantially over the ground when lifting sofa 45 is gone up and down or so.Usual chain 76 is just It is placed on lifting sofa 45 and takes out when in the following, needing to adjust the height of lifting sofa 45 drawing of chain 76 and turn screw rod 3 and achieve that.

We take off four movable ends of left and right leg support lower end rotation connection, change the outfit into four identical idler wheels. By the left side 71 of screw rod and right side 72 separate Bing Fen Do respectively pass through spline connect one have chain sprocket wheel, in this way this liter Drop sofa just becomes the lifting sofa for being adjustable gradient, you can pull screw rod left side 71 or right half by two chains Portion 72 rotation makes sofa right low left high or right high left low you is supplied to recline.

Changing the sofa body 46 of this example into desk body just becomes the lifting desk for having this structure.The sofa body 46 of this example is changed into Bed body just becomes the Height-adjustable for having this structure.

Embodiment 3.

It is the Height-adjustable of embodiment 3 such as Figure 11, Figure 12, Figure 13, Figure 14, shown.A kind of Height-adjustable 80, this Height-adjustable 80 include Bed body 81 and flexible leg device, flexible leg device include left leg support, right leg support, and screw rod 3 and operation 4, left leg support and right leg support are all It is mainly rotatablely connected at a certain distance from respectively from upper end by two support members, the upper end of two support members 5,6 of left leg support is placed on 81 left part of bed body in the following, the upper end of two support members 7,8 of right leg support be placed on 81 right part of bed body in the following, left leg support a support member 6 Upper end and bed body 81 be rotatablely connected the upper end of another support member 5 and constrain in bed body 81 below in a certain range that can horizontally slip And be rotatablely connected with a nut 82, upper end and the bed body 81 of a support member 8 of right leg support are rotatablely connected the upper of another support member 7 It holds and constrains in a certain range that bed body 81 can horizontally slip below and be rotatablely connected with a nut 83,3 left part of screw rod and a left side The nut 82 of 5 upper end of the support member rotation connection of leg support matches, what 7 upper end of support member of 3 right part of screw rod and right leg support was rotatablely connected Nut 83 matches, and operating mechanism 4 is mounted on screw rod 3 and matches with screw rod 3, and left leg support and right leg support lower end contact to earth and support energy Height-adjustable 80 is set to stand on ground.

Bed body 81 includes square grid beam 84, headpiece 85 and bed Huan's.Bed board, which is spread, on 81 Huan's of bed body puts mattress Spreading cotton-padded mattress sheet can sleep.It is that the thicker rod of rectangular solid assembles rectangular in form that square grid beam 84, which is by the section Gen Transverse Si, Grid beam.Square grid beam 84 is below in same level.

Left even frame 12 is similar to the left even frame 12 of 2 lifting sofa of embodiment, also rectangular frame-shaped, also by four sections of same models Unequal angle short side above, long side is welded downwards.Short side above preceding angle steel 13 and rear angle steel is outside.Left comer steel It is inside with the short side above right corner steel.It has done in the downward long side of preceding angle steel 13 on the same horizontal position left side and has been bored on the right of guide groove 86 There is hole.Same guide groove and hole have also been done in the corresponding position of angle steel afterwards.The right even structure of frame 18 and left even frame 12 are symmetrically the same.It is right Even the downward long side of the preceding angle steel 19 of frame 18 is provided with guide groove 87 on the right of the same horizontal position, and the left side is drilled with hole.After right even frame 18 Also same guide groove and hole have accordingly been done on angle steel.Multiple holes are drilled on the left even top of 12 angle steel of frame, pass through this multiple hole It is tightened in the left part of 81 square grid beam 84 of bed body with wood screw in the following, becoming below the left part of bed body 81.It is right to connect the upper of 18 angle steel of frame Also it is drilled with multiple holes on side, the right part in 81 square grid beam 84 of bed body is tightened in the following, becoming bed body by this multiple hole wood screw Below 81 right part.

Support member 5 as shown in figure 12, is welded by the left side bar 21, the right bar 22 and cross bar 88 of steel.21 He of left side bar The right bar 22 is all the rod piece that the section Tong Transverse Xiang is hollow rectangle shape.88 section Shi Transverse Ye of Transverse bar is the rod piece of hollow rectangle shape. In terms of Figure 12 left side bar 21 and the right bar 22 it is wide forward after leptoprosopy to the left and right, cross bar 88 it is wide forward after leptoprosopy to upper and lower.It is left Side rod 21 and the right bar 22 are parallel to each other.Left side bar 21 and the right bar 22 are perpendicular to cross bar 88.Before and after 21 end portion of left side bar One piece of middle cut away forms left piece 89 and right piece 90.It is intermediate before and after 22 end portion of the right bar also to cut away left piece of 91 Hes of one piece of formation Right piece 92.Same level axis is drilled in left piece 89, right piece 90, left piece 91 and right piece 92 lower end leptoprosopy centerlines similarly to justify Hole.The axis of this some holes（Center line）It is exactly the lower end reference line of support member 5.22 upper end leptoprosopy center of left side bar 21 and the right bar Also the circular hole of same axis is drilled at line, the axis of this circular hole is exactly the upper end reference line of support member 5.Upper and lower side reference line is mutually flat Row.The distance of upper and lower side reference line is exactly the length of support member 5.Left side bar 21 and the right bar 22 seem to constitute with upper and lower side reference line Rectangle sample, this support member 5 are the wide support members 5 of square bar.

Support member 6 as shown in figure 13, is welded by the left side bar 23 of steel, You Bian Wu 24, cross bar 93 and 94 groups of round bar.The left side Bar 23 and the right bar 24 are the rod pieces that identical cross-section is hollow rectangle.Cross bar 93 is also the rod piece that cross section is hollow rectangle. Left side bar 23 and the right bar 24 in terms of Figure 13 it is wide forward after leptoprosopy to the left and right.Cross bar 93 in terms of Figure 13 it is wide forward after leptoprosopy to Up and down.The Kong Yuqi that round bar 94 passes across 24 upper end leptoprosopy middle line of left side bar 23 and the right bar is welding as one.23 He of left side bar The right bar 24 is parallel to each other.Left side bar 23 and the right bar 24 are perpendicular to cross bar 93 and round bar 94.Round bar 94 has the left half axle of stretching 95 and right axle shaft 96.The center line of the axis i.e. round bar 94 of left half axle 95 and right axle shaft 96 is exactly 6 upper end reference line of support member. Left piece 97 and right piece 98 is formed for one piece of middle cut away before and after 23 lower part of left side bar.It is intermediate before and after 24 lower part of the right bar also to cut one piece Form left piece 99 and right piece 100.It is drilled in the midline of left piece 97, right piece 98, left piece 99, right piece 100 lower end leptoprosopy same The same circular hole of axis, this axis are exactly the lower end reference line of support member 6.Upper end reference line and lower end reference line are parallel to each other, support The length of part 6 is exactly the distance of its upper and lower side reference line.Left side bar 23 and the right bar 24 are perpendicular to upper and lower side reference line, this support member 6 It is the wide support member of square bar.

The width of the left and right side rod leptoprosopy of support member 5 and 6 or so side rod leptoprosopy of support member are of same size.The length of support member 5 and support member 6 It spends equal.Lower end will be slided over the ground when left leg support and right leg support are gone up and down, so to be rotatablely connected identical four in their lower end A idler wheel.Idler wheel can just be caught between left piece and right piece of 5 or so side rod lower end of support member.5 or so side rod lower end of support member again just It can be respectively clamped between the left and right block of 6 or so side rod lower end of support member.Left front axis 101 passes through right piece 100 of hole, across right piece 92 It, across left piece 91 of hole, across left piece 99 of hole, is then used in left front 101 front and back end of axis across the hole of left front idler wheel 102 in hole Pin is inserted into left front 101 hole of axis and locks.Left rear axle passes through right piece 98 of hole, across right piece 90 of hole, across the hole of left back idler wheel, Across left piece 89 of hole, across left piece 97 of hole, then it is inserted into left back axis hole and is lockked with pin in left rear axle front and back end.

Just support member 5 and the rotation connection of 6 lower end of support member are got up by left front axis 101 and left rear axle, also by left front idler wheel 102 Left leg support lower end is rotationally connected with left back idler wheel.Left front axis 101 and left rear axle are on the same axis.

Four identical spur racks are mounted on left even frame 12 and right even frame 18.Left front rack gear 103 passes through its left and right end On angle steel short side before the hole in portion is mounted on left even frame 12 with screw above 13 guide groove 86 of angle steel.The same method of left back rack gear It is mounted on left even after frame 12 on the corresponding position of angle steel.Rack gear 104 is mounted on the right side with screw by the hole of its left and right end portions before the right side Even on the angle steel short side before frame 18 above 19 guide groove 87 of angle steel.Rack gear is mounted on angle steel after right even frame 18 in the same way behind the right side On corresponding position.It will there are four same gear and this four toothed racks Fen Do to cooperate.

Nut 82 is that longer nut in the upper surface of it is vertically welded with one section of steel pipe 105.Nut 83 is also longer Nut is also vertically welded with one section of steel pipe 117 in the upper surface of it.

The right axle shaft 96 of left leg support support member 6 is inserted into it is left even before frame 12 in the hole on 13 the right of angle steel, by 6 left half axle 95 of support member It is inserted into left even after frame 12 in the corresponding hole of angle steel, just 6 upper end of support member is rotatably connected on left company's frame 12, that is, is rotatably connected on bed On body 81, this is just packed into the left even frame 12 of group weldering certainly.

Left axle 106 passes through the left even guide groove 86 of angle steel 13 before frame 12, across the hole of 5 the right bar of support member, 22 upper end, passes through spiral shell The hole of the steel pipe 105 of mother 82, the hole across 5 left side bar of support member, 21 upper end, the corresponding guide groove of angle steel after left even frame 12, so Afterwards, 106 front end of left axle with key be tightly connected left front gear 107 allow it with left front rack gear 103 matching merges it is slotting in axis front end pin Enter axis hole under lock and key, is tightly connected left back gear with key in 106 rear end of left axle and merges with the matching of left back rack gear in shaft rear end use by it Pin insertion axis hole is under lock and key.Left front wheel gear 107 and left back gear are all all identical straight tooth column teeth such as number of teeth modulus diameter Wheel.Left axle 106 is exactly all cogged bidentate wheel shaft 106 in both ends.Pass through this bidentate wheel shaft 106 and left even 12 front and back guide groove of frame Cooperation just constrains in 5 upper end of support member in a certain range that bed body 81 can horizontally slip below.It is double by cooperating with double rack Gear shaft 106 just gets up 5 upper end of support member and the rotation connection of nut 82.When 5 upper end of support member horizontally slips, before left axle 106 There is wheel and rack cooperation at both ends afterwards, and left axle 106 will be rotating and horizontally slip, since front and back gear is identical with rack gear, 106 both ends of left axle, which will synchronize, to horizontally slip and guarantees that 5 upper end rear and front ends of support synchronize and horizontally slip, even if the wider support member 5 of bed It is wider also to can guarantee that front and back synchronizes and horizontally slips.

Right leg support is by support member 7, support member 8, right front wheel 108 and right rear roller by front right axle 119 and right rear axle such as a left side Leg support is rotatablely connected like that.Support member 7 is identical with 5 structure of support member.Support member 8 is identical with 6 structure of support member.Support member 7, The rotation connection of 8 lower end of support member and the connection with the rotation connection mode of right front and rear rolling wheel and support member 5, support member 6 and left front rear roller Mode is symmetrically the same.The right axle shaft 118 of 8 upper end of support member is inserted into right even before frame 18 in the hole on 19 left side of angle steel, and left half axle insertion is right Even after frame in the corresponding hole of angle steel, just 8 upper end of support member is rotatably connected on right even frame 18, that is, is rotatably connected under bed body 81 Face.Certain support member 8 will be fitted into right even frame 18 should be in the right even frame 18 when progress of group weldering.

The guide groove 87 on 19 the right of angle steel before right even frame 18 of right axle 109 is passed through across the hole of 7 the right bar upper end of support member The hole of the steel pipe 117 of right nut 83 passes through the corresponding guide groove of angle steel after right even frame 18, so across the hole of 8 left side bar upper end of support member Afterwards, 109 front end of right axle is tightly connected right front gear 110 with key and right front gear 110 is allowed to merge with 104 matching of rack gear before the right side and inserted with pin Enter axis front aperture under lock and key, 109 rear end of right axle is tightly connected right backgear with key and right backgear is allowed to merge with rack gear matching behind the right side Under lock and key with pin insertion shaft rear end hole.It is exactly bidentate wheel shaft that gear is housed before and after right axle 109, is exactly the bidentate with double rack cooperation Wheel shaft.Just 8 upper end of support member is constrained in below right even frame 18 i.e. bed body 81 by the cooperation of bidentate wheel shaft 109 and right even frame guide groove In a certain range that can be horizontally slipped.8 upper end of support member is just allowed to be rotatablely connected with nut 83 by this bidentate wheel shaft 109. Right front gear 110, right backgear, left front gear 107, left back gear are all identical straight spur gears.Rack gear 104 before the right side, Rack gear, left front rack gear 103, left back rack gear are all identical spur racks behind the right side.Bidentate wheel shaft 109 is matched with double rack also to be protected 8 upper end front and rear part of support member has been demonstrate,proved to horizontally slip synchronization.

3 left part 111 of screw rod and right part 112 are formed with screw thread, and middle part 113 does not have screw thread, the screw thread of left part 111 and right part 112 It is all trapezoidal single thread and screw pitch is equal oppositely oriented.Among the left even 12 right corner steel front-rear direction of frame of 3 left part of screw rod insertion Hole in enter it is left even frame 12 matched with the nut 82 that 5 upper end of support member is rotatablely connected.Right even 18 left comer of frame of 3 right part of screw rod insertion Enter in right even frame 18 in hole among steel front-rear direction and is matched with the nut 83 of 7 upper end of support member rotation connection.In screw rod 3 The place of 113 company's of keeping left frame 12 of portion and right even frame 18 covers the useful retaining ring 114,115 locked respectively, and even frame, that is, bed body passes through for left and right Retaining ring 114,115 can limit the axial movement of screw rod 3.In assembly, we just allow nut 82 and nut 83 in screw rod 3 or so Symmetrical position makes the angle of left two support member 5,6 of leg support be equal to the angle of right two support member 7,8 of leg support.

3 left end of screw rod is cased with an axle sleeve 116 for using pin locked.There is square hole in axle sleeve 116.Operating mechanism 4 is rocking handle operation Mechanism 4 is exactly rocking handle 4.Rocking handle 4 is detachable rocking handle 4.It will be in the square hole of the lateral square toes insertion axle sleeve 116 of 4 lower end of rocking handle Screw rod 3 can be shaken forward or reverse by rocking handle 4.

Two support members of left leg support and right leg support correspond to identical, and left leg support and right leg support are symmetrical.Left leg support and right leg support Connection by left even frame and right even frame and bed body is also symmetrical.Height-adjustable 80 is by left leg support and right leg support in same level Four rolling contact to earth and can smoothly stand on ground.

Since nut 82 and nut 83 are all rotatablely connected with support member 5,7 upper ends respectively, so nut will not when screw rod 3 rotates Screw rod 3 is followed to rotate and can be axially moved along screw rod.Bidentate due to support member 5 and 7 upper end of support member all by cooperating with double rack Wheel shaft is rotatably assorted with nut, so, regardless of support member 5,7 has their more wide upper end front and rear sides that can all move synchronously with nut.

Since 3 left part of screw rod and the thread pitch of right part are identical oppositely oriented, then, two when screw rod 3 is rotated to certain direction Nut will constant speed draw close or constant speed deviates from.5 upper end of support member just be will drive when two nuts are by disturbing close to 6 upper end of support member, driven 7 upper end of support member is close to 8 upper end of support member, and two leg supports, two support member angle, which will synchronize, to become smaller, and Height-adjustable 80 will increase.When two nuts Away from when just will drive 5 upper end of support member far from 6 upper end of support member, drive 7 upper end of support member far from 8 upper end of support member, two leg supports, two support member Angle will synchronize and become larger, Height-adjustable 80 will reduce.When rotary screw rod under nut and the self-locking work of screw rod Height-adjustable Stablize height herein.

Leg support lower end will move dynamicly when Height-adjustable 80 is gone up and down or so, but leg support lower end has idler wheel not cause to hurt over the ground Evil.Brake can be arranged in we on idler wheel does not allow it to rotate usually.As long as will be under rocking handle 4 when we need to adjust the height of bed Rocking-turn rocking handle 4 in the square hole of the hole insertion axle sleeve 116 among right even 18 right corner steel of frame is held to achieve that, if shaking to certain direction Height-adjustable 80 will increase, then, shaking Height-adjustable 80 to other direction will reduce, easy to operate.

Screw rod 3 is separated into left side and right side by us, before allowing the insertion of screw rod left side left end is left to connect 12 left comer steel of frame The retaining ring of a locking is covered again in hole among rear direction and in the left end of punched out to limit screw rod left side and be axially moved, equally A lock is covered again in the hole for allowing screw rod right side right end to be inserted among right even 18 right corner steel front-rear direction of frame and in the right end of punched out Tight retaining ring is axially moved to limit screw rod right side, then two sets of electric operatings are arranged in Fen Do below the bed body between left and right even frame Mechanism is respectively cooperating with half right and left screw rod, this Height-adjustable 80 has just been made into the Height-adjustable of energy oblique adjusting degree.You can pass through Two sets of motor-operating mechanism operation left sides or the rotation of right side screw rod make the higher tailstock of the head of a bed is lower to recline.Certainly this The bed that can be dispatched can also be tuned into level.

It can be made into the square grid beam of bed with angle steel, directly make guide groove all around on the front-and-back angle of the square grid beam of this angle steel And hole, load onto left leg support, right leg support, screw rod, nut then to become the Height-adjustable of steel.It is done again in the Height-adjustable of this steel The leading portion bed board of that seating of reclining being able to rotate of nursing bed goes up and down nursing bed just to become in hospital out.Go up and down nursing bed Within the hospital in use, the sub- high point of patient bed can be turned up a little, the sub- low spot of patient can be turned down bed a little, be more able to satisfy Sick Man's Demands.

Changing the bed body of this example into desk body just becomes the lifting desk for having this structure to stretch leg device.The bed body of this example is changed Just become the lifting sofa for thering is this structure to stretch leg device at sofa body.

Embodiment 4.

Embodiment 4 is a kind of lifting desk.The lifting desk of embodiment 4 is the mutation of 1 lifting desk of embodiment.It will implement Support member 6 in the left leg support of 1 lifting desk of example 1, which changes support member 110 shown in figure 15 into, just becomes the lifting desk of embodiment 4.

The support member 110 of Figure 15 is the wide support member 110 of square plate being made by one piece of rectangular steel plates 111.The upper end of rectangular steel plates 111 It is provided with a notch among portion, is respectively welded identical left steel pipe 112 and the right side before 111 upper end of notch both sides rectangular steel plates Steel pipe 113.Left steel pipe 112 and right steel pipe 113 have same axis and this axis perpendicular to rectangular steel plates the right and left.

A circular shaft 114 is welded with before 111 lower end of rectangular steel plates sidewards.Circular shaft is cased with respectively on 114 or so extension ends Rubber short tube 115,116.Rubber short tube 115,116 is exactly the rubber end for being located at leg support lower end.

Center line, that is, axis of left steel pipe 112 and right steel pipe 113 is exactly the upper end reference line of support member 110.It is short by rubber Pipe 115,116 following straight lines are exactly the lower end reference line of support member 110.The parallel distance between them of upper and lower side reference line is exactly to support The length of part 110.The length of support member 110 is equal to the length of support member 6 in embodiment 1.Width, that is, rectangular steel plates 111 of support member 110 Width is equal to the width of support member 6.

111 up and down direction of rectangular steel plates intermediate Qian Mian Transverse be welded a steel pipe 117.The axis of steel pipe 117 with 110 upper and lower side reference line of support member is parallel and being equidistant in the same plane and to upper and lower side reference line.Steel pipe 117 is exactly to support The steel pipe of 110 midpoint of part.

1 support member 6 of embodiment is removed, axis 30 is passed through to the hole of 5 the right bar of support member, 22 lower end, passes through support member from right end The hole of 110 steel pipes 117 is then passed through the hole of 5 left side bar of support member, 21 lower end, is then inserted into 30 hole of axis and is locked with pin at 30 both ends of axis Come, just support member 5 and the rotation connection of support member 110 are got up with the midpoint of support member 110 at the lower end of support member 5.Support member 110 Length is also two times of 5 length of support member.

The guide groove 17 that angle steel 13 before left even frame 12 is passed through with 33 axis, from the right hole for passing through 110 steel pipe 113 of support member, across spiral shell The hole of the steel pipe 32 of mother 9 passes through the corresponding guide groove of angle steel after left even frame 12 across the hole of steel pipe 112, then with the tight slotting steel of pin 42 In the hole of pipe 32 and axis 33 under lock and key by axis 33,110 upper end of support member is just constrained in into energy in the left even guide groove of 12 front and back angle steel of frame In a certain range to horizontally slip, that is, constrain in a certain range that desk body 2 can horizontally slip below.

The support member 5 of 1 lifting desk of embodiment is changed into the lifting desk for just becoming embodiment 4 after support member 110.This is implemented The performance and operating method of 4 lifting desk of example are identical as 1 lifting desk 1 of embodiment.

Embodiment 5.

Embodiment 5 is a kind of lifting desk.The lifting desk of embodiment 5 is another mutation of 1 lifting desk of embodiment.It will Support member 5, which is taken off, in embodiment 1 changes support member 118 shown in Figure 16 into just as the lifting desk of embodiment 5.

Support member 118 is a T-shaped support member, it is welded by horizontal axis and vertical bar 119.The left side and the right of horizontal axis have The lesser left half axle 120 of diameter and right axle shaft 121.Left half axle 120 is identical with 121 diameter of right axle shaft and has same axis, this axis Line is exactly the upper end reference line of support member 118.Vertical bar 119 is welded as a whole perpendicular to cross bar and at the midpoint of cross bar with cross bar.It is perpendicular There is hole 122 in 119 lower end of bar.The axis in hole 122 be parallel to upper end reference line it be exactly support member 118 lower end reference line.Support member 118 Length be exactly its upper and lower side reference line distance.The length of support member 118 is the half of 6 length of support member in embodiment 1.

1 support member 5 of embodiment is taken off, the hole of 6 the right bar of support member, 24 midpoint is passed through with axis 30, passes through support member from the right The hole 122 of 118 lower ends, across the hole of 6 left side bar of support member, 23 midpoint, being then inserted in 30 hole of axis with two pins will be under support member 118 Then end lock will be lockked, just at 118 lower end of support member and 6 midpoint of support member among axis 30 with lock in insertion 30 both ends of the hole of axis Support member 118 and the rotation connection of support member 6 are got up.The right axle shaft 121 of support member 118 is penetrated into left even 13 left side of angle steel before frame 12 again Kong Zhong, left half axle 120 is penetrated left even after frame 12 in the corresponding hole of angle steel 14, thus changes the support member 5 of embodiment 1 into support member 118.Here illustrate this replacement certainly in the left even frame when progress of group weldering, this also only illustrates that support member 118 can be used.

This, which changes support member 6 in 1 lifting desk of embodiment into support member 118 just, becomes the lifting desk of the present embodiment.This implementation Example desk performance is slightly worse, and descending operation method is same as Example 1.

Embodiment 6.

Embodiment 6 is also a kind of lifting desk.The lifting desk of embodiment 6 is another mutation of 1 lifting desk of embodiment. Support member 5 in embodiment 1 is taken off and changes support member 123 shown in Figure 17 into just as the lifting desk of embodiment 6.

Support member 123 is as shown in figure 17.Support member 123 is exactly a straight-bar, and there is hole 124 in upper end, and there is hole 125 in lower end.By upper The axis in hole 124 is exactly the upper end reference line of support member 123.The axis of logical lower opening 125 is exactly the lower end reference line of support member 123.Support The upper and lower side reference line of part 123 is parallel and vertical with straight-bar support member 123.The length of support member 123 is exactly its upper and lower side reference line Distance.The length of support member 123 is equal to the length of 1 support member 5 of embodiment.

Support member 5 in 1 lifting desk of embodiment is taken off, the hole at 6 the right bar of support member, 24 midpoint is passed through with axis 30, is passed through Then the hole 125 of 123 lower end of support member is inserted into 30 holes of axis with two pins by support member 123 across the hole at 6 left side bar of support member, 23 midpoint Lower end is locked among axis 30, and then axis both ends are inserted into axis hole under lock and key with pin, just at the lower end of support member 123 and support member 5 Midpoint rotation connection is got up.It is worn with the hole that axis 31 passes through left even 13 left side of frame anterior angle across the hole 124 of 123 upper end of support member The left corresponding hole in 14 left side of angle steel after connecting frame is crossed, is then locked 123 upper end of support member among axis 31 in two pin insertion 31 holes of axis, Then 31 both ends of axis are lockked with pin insertion axis hole.Thus change the support member 5 of embodiment 1 into support member 123.

This, which changes support member 5 in 1 lifting desk of embodiment into support member 123 just, becomes the lifting desk of the present embodiment.This implementation The operating method of example lifting desk is same as Example 1.The performance of the present embodiment lifting desk is poor but also can be used, and only illustrates Straight-bar support member cooperates wide support member composition leg support to be also workable.

Embodiment 7.

Embodiment 7 is a kind of lifting sofa.7 lifting sofa of embodiment is the mutation of 2 lifting sofa of embodiment.Embodiment 2 The support member of middle left and right leg support changes Figure 18 into, the wide support member of gangboard as shown in Figure 19 just becomes the lifting sofa of embodiment 7.

Support member 126 is as shown in figure 18.Support member 126 is the wide support member of gangboard, is made on the basis of trapezoidal steel plate 128.Trapezoidal steel It is following parallel on plate 128, the right with it is upper following vertical, the left side be it is a under the inward-facing bevel edge leaned on.On the top of trapezoidal steel plate 128 Centre is provided with notch, is welded with same upper left steel pipe 129 and upper right steel pipe 130 before trapezoidal 128 upper end notch both sides of steel plate. Upper left steel pipe 129 and upper right steel pipe 130 have same axis, this axis be parallel on trapezoidal steel plate it is following it be exactly support member 126 Upper end reference line.The following middle part of trapezoidal steel plate 128 is also welded with a lower steel pipe 131 with aforementioned steel pipe with diameter, axis Also parallel with trapezoidal steel plate it is upper it is following it be exactly support member 126 lower end reference line.The upper and lower side reference line of support member 126 is parallel, The distance of this upper and lower side reference line is exactly the length of support member 126.

Support member 127 is as shown in figure 19.Support member 127 is also the wide support member of gangboard, is made on the basis of trapezoidal steel plate 132.Ladder Shape steel plate 132 and trapezoidal steel plate 128 are symmetrically the same.The middle part on trapezoidal 132 top of steel plate is also provided with a notch.Trapezoidal steel plate Also upper left steel pipe 133 and upper right steel pipe 134 are welded with before 132 upper ends.Upper left steel pipe 133 and upper right steel pipe 134 are identical.Trapezoidal steel The following left and right of plate 132 is welded with lower-left steel pipe 135 and bottom right steel pipe 136.The steel welded on the steel and support member 126 welded in support member 132 Pipe diameter is identical.Remaining is full symmetric in addition to each one of an one both sides among the steel pipe one of lower end for support member 127 and support member 126 Identical, two support members are isometric support members.The distance of 127 upper end left and right ends of support member 126 and support member is exactly their width, two support members It is wide equal and be equal to 2 support member 5 of embodiment width.

Allow 127 left side of support member on the right of the right of support member 126, support member 127 by 126 left side of support member altogether, allow lower steel pipe 131 It is caught between lower-left steel pipe 135 and right steel pipe 136, then passes through 136 hole of bottom right steel pipe, 131 hole of lower steel pipe, lower-left steel pipe with axis Then 135 holes are inserted into axis hole under lock and key with pin at the both ends of axis, are just rotatablely connected support member 126 and support member 127 at lower end Come.Wrapping viscous one layer of rubber skin as its lower end being grounded in the leg side lower end of this two support member composition again just becomes left leg Frame.

The left leg support of 2 lifting sofa 45 of embodiment is removed, the guide groove on the angle steel left side before left even frame 12 is passed through with axis 62 50, across the hole of 126 upper left steel pipe 129 of support member, across the hole for the steel pipe 56 for lacking place's nut 55 in 126 upper end of support member, across wearing The hole of 126 upper right steel pipe 130 of part, the guide groove on the corresponding left side of angle steel 14, is then inserted into steel pipe with pin 63 after left even frame 12 56 and axis 62 hole by axis 62 under lock and key, just by 126 upper end of support member constrain in it is left even frame guide groove in can horizontally slip it is certain In range, that is, constrain in a certain range that sofa body 46 can horizontally slip below, and 55 turns of nut for just cooperating screw rod 3 It is dynamic to be connected to 126 upper end of support member.

It is worn with guide groove 51 of the another axis 64 on the right of angle steel before left even frame 12 across the hole of 127 upper right steel pipe 134 of support member It crosses and lacks the hole of the steel pipe 58 of place's nut 57 in 127 upper end of support member, across the hole for wearing 127 upper left steel pipe 133 of part, pass through left even frame 12 Then the guide groove on the corresponding the right of angle steel afterwards is inserted into the hole of steel pipe 58 and axis 64 for axis under lock and key with pin 65, just will be in support member 127 End constrains in a certain range that can be horizontally slipped in the left even guide groove of frame, that is, constrains in what sofa body 46 can horizontally slip below In a certain range, and the nut 57 that screw rod 3 cooperates just is rotationally connected with 127 upper end of support member.

As above just the left leg support of lifting sofa hair 45 is changed into leg support that support member 126 and support member 127 form carried out by.We One is done again and is changed the outfit in the same way with identical leg support as support member 126 and the composition of support member 127 connects on frame 18 in right, this Lifting sofa just becomes the lifting sofa of the present embodiment 7.The 2 lifting sofa performances of performance and implementation of the present embodiment lifting sofa It is essentially identical.The descending operation method of the present embodiment lifting sofa is identical as 2 descending operation method of embodiment.

Embodiment 8.

Embodiment 8 is Height-adjustable.The Height-adjustable of embodiment 8 is the mutation of 3 Height-adjustable 80 of embodiment.By the support of embodiment 3 The support member 138 that part 5 and support member 6 take off the support member 137 and Figure 21 that change Figure 20 into just becomes the Height-adjustable of embodiment 8.

Support member 137 is as shown in figure 20.Support member 137 is sawn into four rod piece broadsides forward by the unequal angle of same model Narrow side is backward as Figure 20 sample group is welded.Shang Xia Transverse bar 140 of 139 He of Transverse bar is horizontal.Under left side bar 141 and the right bar 142 End is symmetrically inwardly leaned on and is tilted.Hole block is all welded with before the upper and lower side of left side bar 141 and the right bar 142.Hole block is exactly The aperture of the bloom in hole, four hole blocks is identical.The upper right hole block of 142 upper end of left upper port block 143 and the right bar of 141 upper end of left side bar There is same axis in 144 hole, this axis is exactly the upper end reference line of support member 137.145 He of lower-left hole block of 141 lower end of left side bar There is same axis in the hole of the bottom right hole block 146 of 142 lower end of the right bar, this axis is exactly the lower end reference line of support member 137.Upper end group Directrix is parallel with lower end reference line, and the distance of this upper and lower side end group directrix is exactly the length of support member 137.The length and reality of support member 137 Apply the equal length of support member 6,7 in example 3.The distance of 142 upper end of left side bar 141 and the right bar is exactly the width of support member 137.Support member 137 width is equal with the width of 3 support member 6 of embodiment.The left side bar 141 and the right bar 142 and its upper and lower side benchmark of support member 137 Line is not perpendicular, and good to constitute trapezoidal sample to upper and lower side reference line, this support member 137 is the wide support member 137 of ladder bars.

Support member 138 is as shown in figure 21.Support member 138 and support member 137 are essentially identical, on the left side bar 147 of support member 138 and the right The top and bottom of bar 148 are also respectively welded left upper port block 149, upper right hole block 150, lower-left hole block 151, bottom right hole block 152. The unique different place of support member 138 and support member 137 is that two lower opening blocks of support member 138 are inner, and two lower opening blocks of support member 137 are outer, Two lower opening blocks of support member 138 can be inserted between 137 liang of lower opening of support member.Length of the length and width of support member 138 all with support member 137 Length and width that is equal with width and being equal to 3 support member 6 of embodiment.Support member 138 is also the wide support member of ladder bars.

3 support member 5 of embodiment and support member 6 are changed.The hole of lower-left hole block 145 is passed through with an axis, passes through bottom right hole The hole of block 152 passes through bottom right hole across the hole of lower-left hole block 151 across the hole of left back idler wheel across the hole of left front idler wheel 102 The hole of block 146, then axis hole is inserted under lock and key with pin in the both ends of axis, and then left front idler wheel 102 is lock against with pin insertion axis hole At right hole block 152, then left back idler wheel is lock against at lower-left hole block 151 with pin insertion axis hole, just by 137 lower end of support member, support 138 lower end of part, left front idler wheel 102 and the rotation connection of left back idler wheel are got up as left leg support.

The hole that 13 the right of angle steel before left even frame 12 is passed through with an axis, across the hole of upper right hole block 150, across left upper port block 149 hole passes through the corresponding hole of angle steel after left even frame 12, and then axis hole is inserted under lock and key with pin in the both ends of axis, just by support member 138 Upper end is rotationally connected in left company 12 and is rotationally connected in bed body 81.

It allows left axle 106 to pass through the left even guide groove 86 of angle steel 13 before frame 12, across the hole of 137 left upper port block 143 of support member, passes through The hole of the steel pipe 105 of nut 82, the hole across upper right hole block 144, the corresponding guide groove of angle steel after left even frame 12, then, 106 front end of left axle, which is tightly connected left front gear 107 with key, allows it to match with left front rack gear 103, is close in 106 rear end of left axle with key It connects left back gear and is matched by it with left back rack gear, then be inserted into axis hole under lock and key with pin at this 106 both ends of axis.

It is exactly bidentate wheel shaft that 106 both ends of left axle, which are equipped with same gear this axis,.Pass through this bidentate wheel shaft 106 and left even frame The cooperation of 12 front and back guide grooves just constrains in 137 upper end of support member in a certain range that bed body 81 can horizontally slip below.By with The nut 82 that the bidentate wheel shaft 106 of double rack cooperation just cooperates 137 upper end of support member with screw rod 3 is rotatablely connected.

Leg support left in embodiment 3 is changed into the Height-adjustable after the left leg support of the compositions such as support member 137 and support member 138 by this The Height-adjustable of embodiment 8.The performance of the present embodiment Height-adjustable and the performance for the Height-adjustable for implementing 3 are essentially identical, descending operation side Method is also identical.Right leg support can also also be changed into symmetrical good-looking if the leg support as the composition of support member 137,138.

Embodiment 9.

Embodiment 9 is a kind of lifting sofa.The lifting sofa of embodiment 9 is another mutation of 2 lifting sofa of embodiment.I 2 sofa of embodiment made following three aspect change just to become this example sofa.One, two are done identical to roll as implementing column 3 Idler wheel as wheel 102, allow its radius be equal to implement in 2 block hole center before movable end 67 to movable end bottom surface away from From movable end 67 before the right leg support lower end of embodiment 2 and rear movable end are taken off, ready-made one, two idler wheels is covered 66 front end of axis one is covered in the rear end of axis 66, and then stub bore is inserted under lock and key with pin in the both ends of axis 66.Two, by embodiment The guide groove 53 of angle steel 19 is transformed into the hole at 53 right part of guide groove before 2 right even frames 18, equally will be right on angle steel after right even frame 18 The guide groove on the right answered also is transformed into the hole at guide groove right end, will be rotatably connected on the nut cooperated on axis 68 with screw rod 3 and takes Get off to be out of use, then passes through the right hole being even transformed into before frame on angle steel with axis 68, across the hole of 7 the right bar of support member, 77 upper end, Across the hole of 7 left side bar upper end of support member, then the hole being transformed on angle steel after right even frame is inserted at the both ends of axis 68 with pin In the hole at 68 both ends of axis under lock and key by axis, just the rotation of 7 upper end of support member is connected on right even frame 18, that is, is rotationally connected with sofa body On 46.Three, original 3 right half part 72 of screw rod is removed, is rotated former with what 3 right side left part of screw rod cooperated with support member 8 The nut of connection also removes, and from the right half part for newly making screw rod 3, this 3 right half part of screw rod newly done only has a kind of screw thread, this Screw thread is identical as the thread rotary orientation of 3 left-half of screw rod, 71 left part 73 but lead is secondly again, the 3 right side left end of screw rod newly done Also spline is made.From the nut for newly doing 3 right half part of screw rod that one can newly do with this and being threadedly engaged, also in the nut that this newly does On vertically weld one section of steel pipe, this is newly then made into 3 right half part of screw rod and the nut newly made is as original screw rod right half Part and former nut are installed like that be matched with original position and the angle of support member 7,8 is allowed just to complete transformation equal to the angle of support member 5,6. Transformation rear right-leg frame just has 7 upper end of support member and right even frame 18 i.e. sofa body to be rotatablely connected another 8 upper end of support member about in this way It is rotatablely connected in a certain range that beam can horizontally slip below right even frame guide groove is sand ` hair body and with a nut.

As long as this improved lifting sofa lift adjustment makes the rotation of screw rod 3 can be real with original identical pulling chain 76 It is existing.Can guarantee when lifting the angle of two leg supports, two support member synchronize become smaller with synchronize become larger this lifting sofa can be made steadily to go up and down, but Right leg support lower end will be moved over the ground by idler wheel when lifting.

Embodiment 10

Embodiment 10 is a kind of lifting desk.The lifting desk of embodiment 10 is also the mutation of 1 lifting desk of embodiment.It will implement The left leg support of example 1 changes the three-level leg support of Figure 22 into, and right leg support, which changes into, just becomes this with the symmetrical three-level leg support of Figure 22 three-level leg support The lifting desk of embodiment.

The left leg support of the three-level of Figure 22 is formed by connecting by the wide support member rotation of six square bars is dynamic.Figure 22 is six wide support members of square bar The right bar front left side rod rear situation view.Support member 153,154,155,156 is similar to Fig. 2, support member shown in Fig. 46, It is welded by the tubing that four sections of cross sections are hollow rectangle, also there is left side bar, the right bar, cross tube and sheer pole, it is different Main place is that this four support members or so side rod lower end does not all set plastic tip, but in its wide face in each left and right side rod lower end The hole of same axis is drilled at heart line, the left and right side rod upper end, lower end of this four support members, midpoint in this way has same axis Hole and upper, middle and lower axially bored line is parallel.This four support member equal lengths.Support member 135 is identical with support member 155.Support member 154 and support Part 156 is identical.Support member 154,156 width are slightly smaller than support member 153,155 width and can be caught in wherein.If Figure 22 is by support member 154 are caught in support member part 153 to get up just to become leg across the hole at their left and right sides bar midpoint and then axis both ends lock with axis The level-one of frame.Support member 155,156 is got up just to become the second level of leg support in the rotation connection of midpoint axis so again.Then, such as Figure axis gets up 154 lower end of support member part and the rotation connection of 155 upper end of support member, and 153 lower end of support member and 156 upper end of support member are rotated It connects.Support member 157 and Fig. 2,3 support members 5 are essentially identical, its length is the half of the above four support members length.Support member 158 with Fig. 4,5 its essentially identical left and right side rod lower end of support member 6 be also equipped with plastic tip, length is equal with above-mentioned four support member.With Axis is rotatablely connected at the lower end of support member 157 and at the point of support member 158.With axis by the upper end of support member 157 and support member 156 Lower end rotation connection is got up, and the upper end of support member 158 and the lower end rotation connection of support member 155 are got up, the left leg support of three-level is just formed ?.The cross bar position of support member 153,155 will be arranged properly makes the stroke of this three-level leg support more as far as possible, and very causing can will Cross tube is arranged on upper end hole, and sheer pole is arranged under lower stomidium.

The left leg support of Fig. 1 lifting desk 1 is taken, with axis 31 sequentially pass through the left even hole on 13 left side of angle steel before frame, The hole on 14 left side of angle steel after the hole of 153 left and right sides bar upper end of support member, left even frame, then both ends are got up with lock, just by support member 153 Upper end is rotationally connected in left even frame i.e. desk body.Left angle steel guide groove 17,154 the right bar of support member before connecting frame are sequentially passed through with axis 33 The guide groove of angle steel 14 after the hole of upper end, the hole of the steel pipe 32 of nut 9, the hole of 154 left side bar upper end of support member, left even frame, then still Pin 42 is lockked, just 154 upper end of support member is constrained in a certain range that can be horizontally slipped in left even frame guide groove, that is, constrains in table A certain range Inner that can be horizontally slipped below body.Thus the left leg support of this three-level is mounted below 2 left part of desk body.

As soon as doing a three-level leg support identical with the left leg support of above-mentioned three-level again, will become and three behind it instead to front The left right leg leg support of the symmetrical three-level of leg support of grade.The right leg support of Fig. 1 lifting desk is also taken off, the right leg support of this three-level is symmetrical Ground is mounted on right even frame 18, this lifting desk just has symmetrical three-level or so leg support.This three-level leg support is being gone up and down at present Also it does not slide over the ground substantially at end.The lift adjustment method of this lifting desk with it is preceding identical.The present embodiment lifting desk is gone up and down faster Rise get Geng Gao.If disliking at this time with wheel operating mechanism inconvenience operation is pedaled, it is changed to sprocket wheel chain operating mechanism or rocking handle operating mechanism Or your mechanism of electronic behaviour.

Embodiment 11

Embodiment 11 is a kind of lifting sofa.The lifting sofa of embodiment 11 is also the mutation of 2 lifting sofa of embodiment, will be implemented The left leg support of 2 sofa of example changes second level leg support shown in Figure 23 into, and right leg support, which changes the such second level leg support of Figure 23 into, just becomes this implementation Example lifting sofa.

A kind of second level leg support is as shown in figure 23, is rotatablely connected by the wide support member 159,160,161,162 of square bar.Figure 23 is On the right of the wide support member of each square bar bar front left side rod rear situation view.Support member 159 is similar to the support member 153 of Figure 22.Support member 160 It is similar to the support member 154 of Figure 22.Support member 161,162 is similar to Figure 22 support member 157.Support member 159 and 160 equal length of support member.Support The length of part 161,162 is the half of support member 159,160 length.Support member 159,160 left and right sides midpoints are passed through with axis as shown Hole and both ends lock live be rotatablely connected get up just become leg support level-one.Hole and the support member of 161 upper end of support member are passed through with axis Then both ends lock lives that just the rotation connection of two support members is got up in the hole of 160 lower ends.Hole and the support of 162 upper end of support member are passed through with axis Then both ends lock lives that just the rotation connection of two support members is got up in the hole of 159 lower end of part.Movable end 163 is living with embodiment 2 Moved end 60 identical movable ends of head.With axis by support member 161, the hole of 162 lower ends, pass through the hole of block before and after fore-aft travel end By they be rotatablely connected get up, they are rotatablely connected as 2 support member 5,6 of embodiment and movable end 60,61, just at For second level leg support here.

The left leg support of embodiment 2 is taken off, by the hole of second level leg support support member 159,160 upper ends shown in Figure 23, is used Axis 62,64 is mounted on left even frame 12 as installing former leg support, then does a second level leg support identical with Figure 23 second level leg support It changes the outfit on the right even frame 18 of embodiment 2, this lifting sofa has the lifting sofa of second level leg support with regard to cost implementation.This implementation The lift adjustment of example lifting sofa is same as Example 2.The present embodiment lifting sofa go up and down when or so second level leg support lower end over the ground Also it does not slide substantially.The present embodiment sofa go up and down faster, rise get Geng Gao.

The left and right leg support of any of the above-described embodiment lifting desk and feed screw nut, size constancy or size do some change, peace Just become the lifting sofa for having this structure below sofa body, being mounted on just becomes the Height-adjustable for having this structure below bed body. The left and right leg support and feed screw nut, size constancy or size of same any of the above-described embodiment lifting sofa are done some change, are mounted on Just become the lifting desk for having this structure below desk body, being mounted on just becomes the Height-adjustable for having this structure below bed body.On same Left and right leg support and the feed screw nut of any embodiment Height-adjustable are stated, size constancy or size are done some change, be mounted below desk body Just become the lifting desk for having this structure, being mounted on just becomes the lifting sofa for having this structure below sofa body.

Lifting desk, lifting sofa, Height-adjustable support member be ok as long as this support member upper end will be rotatablely connected with nut It is rotatablely connected as 3 support member 5 of embodiment by the bidentate wheel shaft cooperated with double rack, before guaranteeing this support member upper end After can synchronize and horizontally slip.

We do not use motor-operating mechanism specifically to the various embodiments described above, but the various embodiments described above are all changed to electricity again Pneumatic operating mechanism, although the figure for not drawing motor-operating mechanism comes, those skilled in the art, which can be capable of, to come.

Although enumerating 11 but this and more of the present invention above.

Claims

1. a kind of lifting desk, the lifting desk includes desk body and flexible leg device, the flexible leg device include left leg support, Right leg support, screw rod and operating mechanism, the left leg support and the right leg support are all mainly by two support members respectively from one spacing of upper end It is rotatablely connected from place, the upper end of two support members of the left leg support is placed on the desk body left part in the following, the right leg The upper end of two support members of frame be placed on the desk body right part in the following, a support member of the left leg support upper end and institute It states desk body and is rotatablely connected the upper end of another support member and constrain in a certain range that can be horizontally slipped below the desk body simultaneously It is rotatablely connected with a nut, alternatively, the upper end of two support members of the left leg support all constrains in energy below the desk body In a certain range for horizontally slipping and all respectively respectively with a nut rotation connection, a support member of the right leg support it is upper The upper end that end is rotatablely connected another support member with the desk body constrains in below the desk body the certain model that can be horizontally slipped It is rotatablely connected in enclosing and with a nut, alternatively, the upper end of two support members of the right leg support all constrains in the desk body Distinguish in a certain range that can be horizontally slipped below and all and is respectively rotatablely connected with a nut, the screw rod left part and the left leg The nut of the support member upper end rotation connection of frame matches, in the support member of the screw rod right part and the right leg support The nut of end rotation connection matches, and the operating mechanism is mounted in the screw rod or the desk body and the screw rod phase Cooperation, the support of contacting to earth of the left leg support and the right leg support lower end can make the lifting desk stand on ground.

2. lifting desk according to claim 1, it is characterized in that：The left leg support and the right leg support are all mainly by two It is the left leg support and the right leg support all respectively mainly by one that support member, which is rotatablely connected at a certain distance from respectively from upper end and forms, Long support member and a short support member are rotatablely connected at the lower end of short support member with the midpoint of long support member, the length of the long support member Degree is two times of the short support member length, the equal length of the long support member of the left leg support and the right leg support, the left side The short support member of the equal length of the short support member of leg support and the right leg support, the left leg support and the right leg support it is upper End is all rotatablely connected with the desk body, and the upper end of the long support member of the left leg support and the right leg support all constrains in the table Distinguish in a certain range that can be horizontally slipped below body and all and is respectively rotatablely connected with a nut.

3. lifting desk according to claim 1, it is characterized in that：The left leg support and the right leg support are all mainly by two It is the left leg support and the right leg support all respectively mainly by two that support member, which is rotatablely connected at a certain distance from respectively from upper end and forms, The support member of equal length is rotatablely connected at their lower end, and the length of the support member of the left leg support is equal to the right side The upper end of two support members of the length of the support member of leg support, the left leg support and the right leg support all constrains in the table Distinguish in a certain range that can be horizontally slipped below body and all and is respectively rotatablely connected with a nut.

4. lifting desk according to claim 1 or 2 or 3, it is characterized in that：The support member is that the wide support member of square bar or ladder bars are wide Support member or the wide support member of square plate or the wide support member of gangboard.

5. a kind of lifting sofa, the lifting sofa includes sofa body and flexible leg device, and the flexible leg device includes left leg Frame, right leg support, screw rod and operating mechanism, the left leg support and the right leg support are all mainly by two support members respectively certain from upper end It is rotatablely connected at distance, the upper end of two support members of the left leg support is placed on the sofa body left part in the following, described The upper end of two support members of right leg support be placed on the sofa body right part in the following, a support member of the left leg support it is upper End constrains in can horizontally slip below the sofa body one with the upper end that the sofa body is rotatablely connected another support member Determine to be rotatablely connected in range and with a nut, alternatively, the upper end of two support members of the left leg support all constrain in it is described Distinguish in a certain range that can be horizontally slipped below sofa body and all and is respectively rotatablely connected with a nut, one of the right leg support The upper end that the upper end of the support member and the sofa body are rotatablely connected another support member constrains in energy below the sofa body It is rotatablely connected in a certain range to horizontally slip and with a nut, alternatively, the upper end of two support members of the right leg support It all constrains in a certain range that can be horizontally slipped below the sofa body and all respectively respectively with a nut rotation connection, it is described The nut that the support member upper end of screw rod left part and the left leg support is rotatablely connected matches, the screw rod right part with it is described The nut of the support member upper end rotation connection of right leg support matches, and the operating mechanism is mounted on the screw rod or described It is matched on sofa body with the screw rod, the support of contacting to earth of the left leg support and the right leg support lower end can make the lifting sofa station Stand on ground.

6. lifting sofa according to claim 5, it is characterized in that：The left leg support and the right leg support are all mainly by two It is the left leg support and the right leg support all respectively mainly by one that support member, which is rotatablely connected at a certain distance from respectively from upper end and forms, Long support member and a short support member are rotatablely connected at the lower end of short support member with the midpoint of long support member, the length of the long support member Degree is two times of the short support member length, the equal length of the long support member of the left leg support and the right leg support, the left side The short support member of the equal length of the short support member of leg support and the right leg support, the left leg support and the right leg support it is upper End is all rotatablely connected with the sofa body, and the upper end of the long support member of the left leg support and the right leg support all constrains in described Distinguish in a certain range that can be horizontally slipped below sofa body and all and is respectively rotatablely connected with a nut.

7. lifting sofa according to claim 5, it is characterized in that：The left leg support and the right leg support are all mainly by two It is the left leg support and the right leg support all respectively mainly by two that support member, which is rotatablely connected at a certain distance from respectively from upper end and forms, The support member of equal length is rotatablely connected at their lower end, and the length of the support member of the left leg support is equal to the right side The upper end of two support members of the length of the support member of leg support, the left leg support and the right leg support all constrains in the sand Distinguish in a certain range that can be horizontally slipped below hair body and all and is respectively rotatablely connected with a nut.

8. a kind of Height-adjustable, the Height-adjustable includes bed body and flexible leg device, and the flexible leg device includes left leg support, right leg Frame, screw rod and operating mechanism, the left leg support and the right leg support are all mainly by two support members at a certain distance from respectively from upper end It is rotatablely connected, the upper end of two support members of the left leg support is placed on the bed body left part in the following, the right leg support The upper end of two support members be placed on the bed body right part in the following, a support member of the left leg support upper end and the bed The upper end that body is rotatablely connected another support member constrains in a certain range that can horizontally slip below the bed body and with one A nut rotation connection, alternatively, the upper end of two support members of the left leg support, which all constrains in below the bed body, to be controlled In a certain range of sliding and be all respectively rotatablely connected respectively with a nut, the upper end of a support member of the right leg support and The upper end that the bed body is rotatablely connected another support member constrains in a certain range that can be horizontally slipped below the bed body And be rotatablely connected with a nut, alternatively, the upper end of two support members of the right leg support all constrains in below the bed body Distinguish in a certain range that can be horizontally slipped and all and is respectively rotatablely connected with a nut, the screw rod left part and the left leg support The nut of the support member upper end rotation connection matches, and the support member upper end of the screw rod right part and the right leg support turns The nut of dynamic connection matches, and the operating mechanism is mounted in the screw rod or the bed body to match with the screw rod It closes, the support of contacting to earth of the left leg support and the right leg support lower end can make the Height-adjustable stand on ground.

9. Height-adjustable according to claim 8, it is characterized in that：The left leg support and the right leg support are all mainly supportted by two It is that the left leg support and the right leg support are all mainly long by one respectively that part, which is rotatablely connected at a certain distance from respectively from upper end and forms, Support member and a short support member are rotatablely connected at the lower end of short support member with the midpoint of long support member, the length of the long support member It is two times of the short support member length, the equal length of the long support member of the left leg support and the right leg support, the left leg The upper end of the short support member of the equal length of the short support member of frame and the right leg support, the left leg support and the right leg support It is all rotatablely connected with the bed body, the upper end of the long support member of the left leg support and the right leg support all constrains in the bed body Distinguish in a certain range that can be horizontally slipped below and all and is respectively rotatablely connected with a nut.

10. Height-adjustable according to claim 8, it is characterized in that：The left leg support and the right leg support are all mainly by two It is the left leg support and the right leg support all respectively mainly by two that support member, which is rotatablely connected at a certain distance from respectively from upper end and forms, The support member of equal length is rotatablely connected at their lower end, and the length of the support member of the left leg support is equal to the right side The upper end of two support members of the length of the support member of leg support, the left leg support and the right leg support all constrains in the bed Distinguish in a certain range that can be horizontally slipped below body and all and is respectively rotatablely connected with a nut.