CN202184348U

CN202184348U - Desk with lifting device

Info

Publication number: CN202184348U
Application number: CN2010205111281U
Authority: CN
Inventors: 封晏
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-08-27
Filing date: 2010-08-27
Publication date: 2012-04-11
Anticipated expiration: 2020-08-27

Abstract

The utility model provides a desk with a lifting device. The cross sections of three stages of column cavities which are stacked and sleeved are rectangular, a positive staple-shaped cavity body and a negative staple-shaped cavity body which are opposite are in butt joint via lifting pulleys and guide tracks in the cavity bodies in a riveted, screw connection or welding manner so as to form each rectangular column cavity, a load-bearing crossbeam is arranged at the lower end of the first-stage column cavity, upper and lower portion pulley mounting recesses are respectively arranged on two walls of one side of the lower half portion of the second-stage column cavity and one side of the lower half portion of the third-stage column cavity, the upper portion pulley mounting recesses are arranged into at least one group, a positioning pulley, a built-in lever type elastic tensioning wheel rack and an elastic tensioning wheel are arranged on the other side , which is opposite to pulley block recesses, of the third-stage column cavity, outer sides of the recesses of the second-stage column cavity are respectively fixed with a pulley cavity, pulley mounting recesses which are identical to the column cavity upper recesses are arranged on cavity bodies of the pulley cavities and correspond to the column cavity upper recesses, and a positioning pulley rack, a pulley, an external lever type elastic tensioning wheel rack and an elastic tensioning wheel are disposed on the other side, which is opposite to the column cavity pulley block recesses, of the column cavity.

Description

Desk with lowering or hoisting gear

Technical field

The utility model relates to the office furniture technical field, and concrete is a kind of desk with lowering or hoisting gear.

Background technology

Desk refers to handle official business use workbench here especially, is that people work, learn required instrument.The size of desk, highly, the angle of desktop all can be to people's work, study, and healthy generation certain influence.At present, no matter be the workbench that top class in a kindergarten's platform, desk or professional and technical personnel are used for being engaged in computer 3D design, it is highly all fixed, and the user of different occupation, age, height yardstick is in the state of passive adaptation.Along with the progress of science and technology, qualitative change has taken place in people's work, study, life style, and this makes existing desk can not adapt to a certain extent and satisfies the comprehensive needs of people to different " desk " function.Now; The professional and technical personnel; Especially for a long time the professional and technical personnel who uses computer to carry out work, the long-term application of force state that keeps static state passively causes obesity, cardiovascular and cerebrovascular disease, uncomfortable, the constipation of lumbar spine therefrom; And problems such as " overwork ", and " overwork " person great majority are the brain workers that are engaged in sitting posture for a long time.Therefore; The new work and study mode of a kind of people of adaptation and life style needs are provided; Has the height of table top lowering or hoisting gear; Thereby the desk that makes the user select differing heights to carry out work reasoningly according to different instructions for uses, healthy to ensureing the user, raising work, learning efficiency and sustainable development have very important significance.

In the prior art; The computer desk (Chinese patent number for ZL200420111423.2) that a kind of liftable finger-board is arranged; Can adjust the height of keyboard; The worry that keyboard can not raise or reduce when it had solved teenager and special build person with computer, but should technology still can't solve the problems referred to above that the overwhelming majority person of bending over one's desk working exists.

The utility model content

The utility model is the patent that continues of patent (200710038315), provides a kind of height to regulate arbitrarily, and the use angle of scalable desktop, the desk that the random different posture of conversion reasoningly of person easy to use is carried out work or study.

For achieving the above object, the utility model adopts following technical scheme:

A kind of desk with lowering or hoisting gear is characterized in that: said desk comprises desktop, seat plinth, lowering or hoisting gear, desktop load trailing arm and solid shape carriage; Lowering or hoisting gear comprises elevating mechanism and transmission mechanism; Elevating mechanism comprises mutually nested first order post chamber, post chamber, the second level and third level post chamber; The cross section in post chamber is a rectangle, and this rectangle post chamber is formed with riveted joint, screw connection or welding butt joint through the lifting pulley guide rail in the chamber by the cavity of positive and negative two relative staple shapes; Or the also section bar of characteristic customization cavity and guide rail one in view of the above; Lower end in first order post chamber is provided with the load crossbeam; Be respectively equipped with upper and lower two parts pulley on two walls of post chamber, second level Lower Half one side recess is installed; Wherein the top pulley is installed recess and is provided with one group at least; The semiclosed rectangular housing that a fixing respectively pulley chamber, each recess outside, pulley chamber cavity can single faces, two sides or three side sealing close is fixed on top sheave recess relevant position, post chamber, the second level through welding, screw or rivet; Cavity component is up and down opened, and also can organize one up and down; Pulley chamber cavity also is provided with the pulley consistent with post chamber notch with post chamber notch opposite position recess is installed; And be provided with location pulley yoke and external lever bullet bearing up pulley frame in the opposite side position, post chamber relative with this post chamber assembly pulley recess; On two walls of third level post chamber Lower Half one side, also be respectively equipped with upper and lower two parts pulley recess is installed; Wherein top is provided with one group of pulley at least recess is installed; On the relative post chamber opposite side two wall positions of this assembly pulley recess, be provided with location pulley recess, and be provided with built-in lever bullet bearing up pulley frame in the post chamber below this location pulley recess; Be slidingly connected with pulley and slide rail between each post chamber; Pulley is arranged on the recess or wheel carrier in above-mentioned post chamber through wheel shaft; Wherein post chamber in the second level is arranged in the first order post chamber and based on first order post chamber and does to go up and down to slide, and third level post chamber is arranged in the post chamber, the second level and based on post chamber, the second level and does to go up and down to slide; Opposite side is provided with location pulley yoke, pulley and external lever bullet bearing up pulley frame and bullet bearing up pulley accordingly on post chamber, the second level wall between first order post chamber and the post chamber, the second level; Also be provided with the location pulley in the location pulley recess on the third level post chamber wall opposite side between post chamber, the second level and third level post chamber accordingly and thereunder be provided with built-in lever bullet bearing up pulley frame and bullet bearing up pulley.

Lifting column, seat plinth and the desktop load trailing arm of said desktop below is independent, and lifting column only has one, and lifting column can go up and down through driven by shaking, at this moment desk

The relevant position is provided with first screw putter that adapts with first order post chamber in first order post chamber; The relevant position is provided with second screw putter that adapts with post chamber, the second level in post chamber, the second level, and the relevant position is provided with the 3rd screw putter that adapts with third level post chamber in third level post chamber; The top of wherein said the 3rd screw putter is established a load bearing and is rotatably connected with top, third level post chamber, and the other end of this said the 3rd screw putter is through the internal thread engagement of its external screw thread and second screw putter upper end; The other end of said second screw putter is through the internal thread engagement of its external screw thread and first screw putter upper end; The lower end of said first screw putter is fixed on the load crossbeam of bottom, first order post chamber; The elevating movement that second screw putter and the 3rd screw putter all can stretch state through the rotation of screw rod; And

Below the load bearing on the 3rd screw putter top, establish the bevel gear that is fixedly connected with the 3rd screw putter; Under the 3rd screw putter bevel gear, can establish a screw rod location bearing, this screw rod location bearing is fixedly installed on the wall of third level post chamber through a support;

In lifting column desktop load trailing arm or thereunder be provided with hand-operated lifting crank mechanism, this mechanism is made up of the bearing block of crank, kinematic link, kinematic link telescopic and fixed conveyor connecting rod telescopic; Bearing block is fixedly connected on two walls in third level post chamber through a crane span structure; Kinematic link telescopic one end is the cannulated sleeve that both sides have two chutes; The other end is relative thinner solid cylinder; This kinematic link telescopic also can be divided into two parts that can break with its solid cylinder; Can tie through joint tongue or transmission and connect transmission, the solid cylinder of kinematic link telescopic is fixedly connected with a bevel gear after passing bearing block upper bearing (metal) endoporus, and this bevel gear then becomes an angle of 90 degrees engagement with the 3rd screw putter bevel gear; The kinematic link that one end is provided with a transmission pilot pin is arranged in the kinematic link telescopic; This kinematic link is can be along transversal stretching slippage in the chute length distance in cannulated sleeve under the restriction of transmission pilot pin, but telescopic can only rotate under the drive of kinematic link pilot pin synchronously; The other end of kinematic link is provided with crank, and is fixed in the desktop load trailing arm or the below through an axle sleeve, bearing block or bearing fixing arm;

Said desk has single lifting column pattern; This moment, lifting column, seat plinth and the desktop load trailing arm of desktop below were independent; Lifting column only has one, and lifting column can realize that this transmission mechanism has two kinds of set-up modes that the essence effect is identical through the motor driving scroll turbine:

First kind of mode, when this transmission mechanism was located at upper end, third level post chamber, the first screw putter lower end was fixed on the load crossbeam of lower end in the first order post chamber; And below the load bearing on the 3rd screw putter top, fixedly install a turbine; On the chamber wall of both sides, third level post chamber, respectively establish the bearing block that a tape spool holds with turbine corresponding height position, scroll bar and turbine engagement also are arranged on this diaxon bearing, and an end of scroll bar links to each other with the rotor of the motor that is arranged on the outside, third level post chamber;

The second way, when this transmission mechanism was located at lower end, first order post chamber, the 3rd screw putter top was inserted it through a bolt and is fixedly connected with upper end, third level post chamber bolt; In first order post chamber, establish a load bearing on the load crossbeam of lower end, this bearing is nested in the turbine, and the turbine top is fixedly connected with the first screw putter lower end; On the chamber wall of both sides, first order post chamber, respectively establish the bearing block that a tape spool holds with turbine corresponding height position, scroll bar and turbine engagement also are arranged on this diaxon bearing, and an end of scroll bar links to each other with the rotor of the motor that is arranged on the outside, first order post chamber;

Said single lifting column pattern can adopt synchronizing wheel to be with the kind of drive synchronously, and lifting column can be with synchronously through the motor-driven synchronizing wheel and realize that this transmission mechanism also has two kinds of identical set-up modes of essence effect:

First kind of mode, when this transmission mechanism was located at upper end, third level post chamber, the first screw putter lower end was fixed on the load crossbeam of lower end in the first order post chamber; And below the load bearing on the 3rd screw putter top, fixedly install a synchronizing wheel; On the chamber wall of third level post chamber one side, offer a punch holes with synchronizing wheel corresponding height position, synchronously band pass this hole with the 3rd screw putter synchronizing wheel be arranged on third level post chamber one side outside rotor on the driving synchronizing wheel link to each other;

The second way, when this transmission mechanism was located at lower end, first order post chamber, the 3rd screw putter top was inserted it through a bolt and is fixedly connected with upper end, third level post chamber bolt; In first order post chamber, establish a load bearing on the load crossbeam of lower end, this bearing is nested in the synchronizing wheel, and the synchronizing wheel top is fixedly connected with the first screw putter lower end; On the chamber wall of first order post chamber one side, offer a punch holes with synchronizing wheel corresponding height position, synchronously band pass this hole with the first screw putter synchronizing wheel be arranged on first order post chamber one side outside rotor on the driving synchronizing wheel link to each other;

Said desk also has two lifting column patterns; The lifting column of desktop below, seat plinth and lifting column desktop load trailing arm are left-right symmetric and are located at both sides, desktop below at this moment; Lifting column has two; Link to each other through seat plinth carrier bar, post chamber connecting plate, synchronous band cover and the solid shape carriage of desktop between the two, and go up and down, at this moment desk with driven by shaking:

The relevant position is provided with first screw putter that adapts with first order post chamber in first order post chamber; The relevant position is provided with second screw putter that adapts with post chamber, the second level in post chamber, the second level, and the relevant position is provided with the 3rd screw putter that adapts with third level post chamber in third level post chamber; The top of wherein said the 3rd screw putter is established a load bearing and is rotatably connected with top, third level post chamber, and the other end of this said the 3rd screw putter is through the internal thread engagement of its external screw thread and second screw putter upper end; The other end of said second screw putter is through the internal thread engagement of its external screw thread and first screw putter upper end; The other end of said first screw putter is fixed on the load crossbeam of bottom, first order post chamber; The elevating movement that second screw putter and the 3rd screw putter all can stretch state through the rotation of screw rod;

Establish the bevel gear that is fixedly connected with the 3rd screw putter below the load bearing on the 3rd screw putter top in the lifting column of hand-operated lifting crank one side; Under the 3rd screw putter bevel gear, can establish a screw rod location bearing, this screw rod location bearing is fixedly installed on the wall of third level post chamber through a support;

Lifting column third level post chamber and vertical connection of desktop load trailing arm; In lifting column desktop load trailing arm or thereunder be provided with hand-operated lifting crank mechanism, this mechanism has the bearing block of crank, kinematic link, kinematic link telescopic and fixed conveyor connecting rod telescopic to constitute; Bearing block is fixed on two walls in third level post chamber through a crane span structure; Kinematic link telescopic one end is the cannulated sleeve that both sides have two chutes; The other end is relative thinner solid cylinder; The solid cylinder of kinematic link telescopic is fixedly connected with a bevel gear after passing bearing block upper bearing (metal) endoporus, and this bevel gear then becomes an angle of 90 degrees engagement with the 3rd screw putter bevel gear; The kinematic link that one end is provided with a transmission pilot pin is arranged in the kinematic link telescopic; This kinematic link is can be along transversal stretching slippage in the chute length distance in sleeve under the restriction of transmission pilot pin, but telescopic can only rotate under the drive of kinematic link pilot pin synchronously; The other end of kinematic link is provided with crank, and through a bearing block or bearing fixing arm be fixed in the desktop load trailing arm or below; And

Establish the synchronizing wheel that is fixedly connected with the 3rd screw putter above or below the bevel gear that is fixedly connected on the 3rd screw putter in being provided with the third level lifting column chamber of hi/lo crank one side; Fixedly install too on the same position of the 3rd screw putter in the third level lifting column chamber of another lifting column that is symmetrical set one with the consistent identical synchronizing wheel of this synchronizing wheel height, connect with synchronous band between two synchronizing wheels.

Lifting column, seat plinth and lifting column desktop load trailing arm are the symmetrical both sides, desktop below of being located at, and lifting column has two, link to each other through a plinth carrier bar, post chamber connecting plate, synchronous band cover and the solid shape carriage of desktop between the two, and lifting column passes through the motor-driven up-down,

The relevant position is provided with first screw putter that adapts with first order post chamber in first order post chamber; The relevant position is provided with second screw putter that adapts with post chamber, the second level in post chamber, the second level, and the relevant position is provided with the 3rd screw putter that adapts with third level post chamber in third level post chamber; The top of wherein said the 3rd screw putter is established a load bearing and is rotatably connected with top, third level post chamber, and the other end of this said the 3rd screw putter is through the internal thread engagement of its external screw thread and second screw putter upper end; The other end of said second screw putter is through the internal thread engagement of its external screw thread and first screw putter upper end; The other end of said first screw putter is the lower end, is fixed on the synchronizing wheel in lower end, lifting column first order post chamber and the seat plinth, and synchronizing wheel is arranged on the load crossbeam through the load bearing; The elevating movement that second screw putter and the 3rd screw putter all can stretch state through the rotation of screw rod; And

Lifting column first order post chamber and seat plinth be vertical to be connected and to be symmetrical set present plinth connecting plate both sides; The load crossbeam of lower end, first order post chamber is provided with the load bearing; This two symmetrical load bearing respectively is nested in the identical synchronizing wheel; Synchronizing wheel top and one-level push rod lower ends, band is through a seat plinth connecting plate two symmetrical synchronizing wheels that link to each other synchronously, and the motor of band synchronizing wheel is located on the plinth connecting plate and through two pulley tighteners motor drum in-phase is agreed with being with synchronously; Or this mode also can be provided with the motor of above-mentioned band synchronizing wheel the both sides, front and back that present plinth is installed the lifting column position; Synchromesh gear on the load bearing that lower end, first order post chamber in the motor one side seat plinth is installed is made as the synchronizing wheel of double-layer integrally; When connecting the synchronizing wheel of lower end, left-right symmetric first order post chamber, be arranged on the synchronizing wheel on the rotor in the rear side seat plinth of first order post chamber with another band connection synchronously with a synchronous band; A bolt and slotting being located by connecting of chamber, both sides, upper end, third level lifting column chamber wall bolt are then established in third level push rod upper end.

The load crossbeam side that the seat plinth is installed in the position, lifting column chamber is provided with an electric conductor mounting bracket, and the electric conductor mounting bracket is provided with three electrode connection stake installing holes; The top in the third level lifting column chamber directly over this electric conductor mounting bracket is provided with a nonmetal spacer, on the nonmetal spacer with under electric conductor mounting bracket relative position be provided with three electrode connection stake installing holes equally; Telescopic electric conductor is made up of telescopic antenna or spring; In the electrode connection stake installing hole on the nonmetal spacer above two ends are separately fixed at and the electric conductor mounting bracket of below, be provided with insulation sleeve and insulation spacer in the electrode connection stake installing hole of lower end electric conductor metal mounting bracket; Telescopic electric conductor is provided with flexible insulating sheath outward; Insulating sheath is two-layer nestable alternately inside and outside being; The length of two insulation sleeves is about about 55% of electric conductor extension length; On the electric conductor mounting bracket below one end of ectonexine insulation sleeve is separately fixed at and on the nonmetal spacer of top, when going up and down with lifting column, nonmetal spacer drives relative another layer insulating sheath up-down slippage with its fixing insulating sheath; The importing of power supply and leading-out terminal are connected in the electrode stake at two ends up and down.

Described desktop stabilizing mechanism is made up of flexible tooth bar group and synchromesh gear group, and flexible tooth bar group is the setting of sliding of fitting of the toothed rack bar shaped square column identical with another root thickness, and the synchromesh gear group is that circular shaft two ends respectively fixedly install an identical gear; Flexible tooth bar be about two groups arranged side by side, be symmetricly set on the both sides of the single lifting column in desktop below respectively, connect with the synchromesh gear group between the two and dynamically control, the two ends of flexible tooth bar group are the engaging lug on Connection Block plinth and the table top with bearer respectively; The tooth bar and the bar shaped square column slip bond end of two flexible tooth bar groups are respectively established a pair of slippage spacer; One end of the spacer of two band synchronous gear shaft installing holes is fixedly installed on bar shaped square column one end both sides respectively; Two synchromesh gears are installed in and mesh on the tooth bar that is arranged on two symmetries that overlap with the slip of bar shaped square column the rearward position on the present plinth both sides of the lower end hinged securement of two bar shaped square columns in the synchromesh gear installing hole respectively; One end of the spacer of another group band stay hook is separately fixed at the both sides of tooth bar slip bond end; The other end of this spacer then slides and hooks the bar shaped square column; The other end of tooth bar of two symmetries is upper ends, is articulated in respectively on the engaging lug of table top with bearer of front side, desktop below, single lifting column both sides; Two tooth bars and bar shaped square column can the synchronously level and smooth telescopic movings of symmetry.

Rear side in single lifting column first order lifting column chamber is set with one or two vertical stability column of existing side by side; The lower end of stability column is fixed on the rear side of first order lifting column through a stability column lower carriage; The upper end is fixed on the upper end of first order lifting column through another stability column upper bracket; Establish on the stability column one can be on vertical stability column the vertical stability column slippage of the hound cover (twin columns then use the fixing two-tube slippage cover of existing side by side) of slippage up and down, reduce to when minimum when desktop, the slippage cover is in vertical stability column lower end; The lower end of two symmetrical hounds is connected in the left and right sides of slippage cover; The angled respectively left-right symmetric of the other end of hound is connected on the desktop bottom bracket engaging lug, and when lifting column rose, the slippage cover rose along vertical stability column slippage with hound simultaneously; Hound can be the single lifting column both sides under the desktop that are symmetricly set in, and also can adopt the V-arrangement group to be symmetricly set in lifting column both sides under the desktop.

Rear side is established a desk lamp, computer display establishing mounting bracket on top, lifting column third level post chamber, and the establishing support is fixed on third level post chamber upper end rear side, also can be installed on the encorbelmenting of desktop load trailing arm third level post chamber rear side; The establishing support is overlooked and is V-arrangement; The V-arrangement of choosing is pitched a terminal side and is provided with Desk lamp support inserting column installing hole; Can supply commercially available establishing desk lamp to peg graft, opposite side is provided with the display/panel bracket mounting socket, and the establishing support of two lifting column same table also can directly prolong encorbelmenting of both sides desktop load trailing arm third level post chamber rear side; And be provided with and jack be installed on it, constitute the left and right sides single-column arranged side by side establishing support of encorbelmenting.

The advantage of the technical scheme that the utility model adopted is:

" desk with lowering or hoisting gear " it use height to regulate arbitrarily; And the use angle of scalable desktop; The random different posture of conversion reasoningly of person easy to use is carried out work or study; Thereby improve, ensure user's health status, raising work, learning efficiency and productivity sustainable development are had very important significance.The utility model has then carried out further developing innovation to existing technical scheme; Make new scheme when having increased function of use, more reasonable occupation mode reliably is provided, the utility model also makes manufacturing process more simple and easy to do; More stable quality is reliable; Reduced manufacturing cost, enlarged the use crowd, made the more household person occupation mode that secures good health of having ready conditions.

Below in conjunction with accompanying drawing the enforcement and the advantage of the utility model are done further to explain.

Description of drawings

Accompanying drawing 1 is the integrally-built forward sketch map of two up-down pillars of the utility model " desk with lowering or hoisting gear ";

Accompanying drawing 2 is the integrally-built left-hand sketch map of two up-down pillars of the utility model " desk with lowering or hoisting gear ";

Accompanying drawing 3 is the forward sketch map of the integral arrangement of the driven by shaking form of two up-down pillars of the utility model " desk with lowering or hoisting gear ";

Accompanying drawing 4 is bowed to sketch map for the integral arrangement of the driven by shaking form of two up-down pillars of the utility model " desk with lowering or hoisting gear ";

Accompanying drawing 5 is the left-hand sketch map of the integral arrangement of the driven by shaking form of two up-down pillars of the utility model " desk with lowering or hoisting gear ";

Accompanying drawing 6 for the type motor-driven of two up-down pillars of the utility model " desk " with lowering or hoisting gear bow to integral arrangement figure, motor places on the connecting plate of post chamber at this moment;

Accompanying drawing 7 is for the integral arrangement figure of the type motor-driven of two up-down pillars of the utility model " desk with lowering or hoisting gear ", this moment, motor placed the lifting column rear side;

Accompanying drawing 8 is the left-hand sketch map of accompanying drawing 6;

Accompanying drawing 9 is the forward sketch map of accompanying drawing 6;

Accompanying drawing 10 is the forward sketch map of accompanying drawing 7;

Accompanying drawing 11 is the dextrad sketch map of accompanying drawing 10;

Accompanying drawing 12 is the exploded perspective view of the partial structurtes of the rack-and-pinion desktop dynamic equilibrium mechanism of single up-down pillar of the utility model " desk with lowering or hoisting gear ";

Accompanying drawing 13 overall structure sketch mapes for single lifting column driven by shaking form of the utility model " desk " and rack-and-pinion desktop dynamic equilibrium mechanism with lowering or hoisting gear;

Accompanying drawing 14 is the left-hand sketch map of accompanying drawing 13;

Accompanying drawing 15 is bowed to sketch map for s11's in the accompanying drawing 14; Accompanying drawing 16 is the integral arrangement figure of the diagonal brace rod-type desktop dynamic equilibrium mechanism same table of single lifting column driven by shaking form of the utility model " desk with lowering or hoisting gear ";

Accompanying drawing 17 is the sketch map of the decline state of the desk with lowering or hoisting gear shown in the accompanying drawing 16;

Accompanying drawing 18 is the left-hand sketch map of accompanying drawing 16;

Accompanying drawing 19 is vertically stablized the integrally-built of pillar for the list of accompanying drawing 16 and is bowed to sketch map;

Accompanying drawing 20 is vertically stablized the bowing to sketch map of partial structurtes of pillar for two in the accompanying drawing 16;

The forward sketch map of the partial structurtes when accompanying drawing 21 26 is located at lower end, first order post chamber with the transmission mechanism of the kind of drive synchronously for the synchronizing wheel of single lifting column type motor-driven of the utility model " desk with lowering or hoisting gear ";

The dextrad sketch map of the partial structurtes when accompanying drawing 22 is located at lower end, first order post chamber with the transmission mechanism of the kind of drive synchronously for the synchronizing wheel of single lifting column type motor-driven of the utility model " desk with lowering or hoisting gear ";

Bowing of partial structurtes when accompanying drawing 23 is located at lower end, first order post chamber with the transmission mechanism of the kind of drive synchronously for the synchronizing wheel of single lifting column type motor-driven of the utility model " desk with lowering or hoisting gear " to sketch map;

Partial structurtes sketch map when accompanying drawing 24 is located at upper end, third level post chamber with the transmission mechanism of the kind of drive synchronously for the synchronizing wheel of single lifting column type motor-driven of the utility model " desk with lowering or hoisting gear ";

The left-hand sketch map of the partial structurtes when accompanying drawing 25 is located at upper end, third level post chamber with the transmission mechanism of the kind of drive synchronously for the synchronizing wheel of single lifting column type motor-driven of the utility model " desk with lowering or hoisting gear ";

Bowing of partial structurtes when accompanying drawing 26 is located at upper end, third level post chamber with the transmission mechanism of the kind of drive synchronously for the synchronizing wheel of single lifting column type motor-driven of the utility model " desk with lowering or hoisting gear " to sketch map;

Accompanying drawing 27 is arranged on the forward sketch map of the partial structurtes of lower end, first order post chamber for the load bearing of the turbine worm kind of drive of single lifting column type motor-driven of the utility model " desk with lowering or hoisting gear ";

Accompanying drawing 28 is arranged on the left-hand sketch map of the partial structurtes of lower end, first order post chamber for the load bearing of the turbine worm kind of drive of single lifting column type motor-driven of the utility model " desk with lowering or hoisting gear ";

Accompanying drawing 29 is arranged on the bowing to sketch map of partial structurtes of lower end, first order post chamber for the load bearing of the turbine worm kind of drive of single lifting column type motor-driven of the utility model " desk with lowering or hoisting gear ";

Accompanying drawing 30 is arranged on the forward sketch map of the partial structurtes of upper end, third level post chamber for the load bearing of the turbine worm kind of drive of single lifting column type motor-driven of the utility model " desk with lowering or hoisting gear ";

Accompanying drawing 31 is arranged on the left-hand sketch map of the partial structurtes of upper end, first order post chamber for the load bearing of the turbine worm kind of drive of single lifting column type motor-driven of the utility model " desk with lowering or hoisting gear ";

Accompanying drawing 32 is arranged on the bowing to sketch map of partial structurtes of upper end, first order post chamber for the load bearing of the turbine worm kind of drive of single lifting column type motor-driven of the utility model " desk with lowering or hoisting gear "; Accompanying drawing 33 is a concrete structure sketch map in the first order post chamber in the lifting column chamber of the utility model " desk with lowering or hoisting gear ";

Accompanying drawing 34 is the sketch map of the cross section of accompanying drawing 33;

Accompanying drawing 35 is another cross sectional representation of accompanying drawing 33;

Accompanying drawing 36 is the concrete structure sketch map in the post chamber, the second level in the lifting column chamber of the utility model " desk with lowering or hoisting gear ";

Accompanying drawing 37 is the sketch map of the cross section of accompanying drawing 36;

Accompanying drawing 38 is another cross sectional representation of accompanying drawing 36;

Accompanying drawing 39 is the concrete structure sketch map in the third level post chamber in the lifting column chamber of the utility model " desk with lowering or hoisting gear ";

Accompanying drawing 40 is the sketch map of the cross section of accompanying drawing 39;

Accompanying drawing 41 is the sketch map of another cross section of accompanying drawing 39;

Accompanying drawing 42 is organized the partial structurtes sketch map that cavity is an one up and down for post chamber, the second level pulley cavity segment of the utility model " desk with lowering or hoisting gear ";

Accompanying drawing 43 is organized another partial structurtes sketch map that cavity is an one up and down for post chamber, the second level pulley cavity segment of the utility model " desk with lowering or hoisting gear ";

Accompanying drawing 44 is organized the partial structurtes sketch map that cavity separates up and down for post chamber, the second level pulley cavity segment of the utility model " desk with lowering or hoisting gear ";

Accompanying drawing 45 is for organizing another partial structurtes sketch map that cavity separates up and down for post chamber, the second level pulley cavity segment of the utility model " desk with lowering or hoisting gear ";

Accompanying drawing 46 is the left-hand sketch map of a concrete fit structure of the driven by shaking form elevating mechanism of the single, double lifting column of the utility model " desk with lowering or hoisting gear " and transmission mechanism;

Accompanying drawing 47 is the left-hand sketch map of structure of the elevating mechanism of accompanying drawing 46;

Accompanying drawing 48 is the left-hand sketch map of another concrete fit structure of the driven by shaking form elevating mechanism of the single, double lifting column of the utility model " desk with lowering or hoisting gear " and transmission mechanism;

Accompanying drawing 49 is the left-hand sketch map of structure of the driven by shaking pattern elevating mechanism of accompanying drawing 48;

Accompanying drawing 50 is an electrically conducting manner structural representation of the type motor-driven of the utility model " desk with lowering or hoisting gear ";

Accompanying drawing 51 is another electrically conducting manner structural representation of the type motor-driven of the utility model " desk with lowering or hoisting gear ".

Label in the accompanying drawing is respectively:

D, the two lifting columns of expression, are represented single lifting column at S, in u/d, the expression/and the below; S/d, expression list/even numbers;

D1/S1, desktop, the S1u/S1d desktop rises, the state when falling, D2/S2, seat plinth, D3/S3, lifting column, D4/S4, desktop trailing arm; D5, post chamber connecting plate, S5, post chamber/drawout cubicle backboard, D6, seat plinth connecting plate, D7/S7, the solid type/glove of desktop/collecting frame, S8a, reduction tooth bar group and synchromesh gear group (rack-and-pinion desktop dynamic equilibrium mechanism); S8a1, tooth bar, S8a2, bar shaped square column, S8a3, synchromesh gear, S8a4, gear synchronising (connecting) rod, the spacer of S8a5, band synchromesh gear installing hole; The spacer of S8a6, band stay hook, S8b, Jackstay type desktop dynamic equilibrium mechanism, S8b1a, simple root hound (omitting another root), S8b1b, shaped inclined strut bar group, S8b2a/S8b2b, (single/two) the vertical stability column slippage of hound cover; S8b3a/S8b3b, list/two vertical stability columns, S8b4a/S8b4b, vertical stability column lower carriage, S8b5a/S8b5b, vertical stability column upper bracket, on S8b6, (hound) engaging lug, S9, drawout cubicle mounting; S10, drawout cubicle, D (S) 11, desk lamp/computer display establishing support, the state when S1u, desktop rise, S1d, the state when desktop is fallen, 31, first order lifting column chamber; The cavity of 31L/31R, the positive and negative staple shape in first order post chamber, 312, the load crossbeam, 314, the cavity connector of slide rail/positive and negative staple shape in first order post chamber, 3112s, single synchronizing wheel, 3112d, two synchronizing wheel; D3113d/S3113d, load bearing (underlying/standard), the d3114a underlying is with synchronously, and the rearmounted band (descending) synchronously of d3114b is put synchronous band on the S3114u (single-column), D3115/S3115, motor side synchronizing wheel; 3116, motor, D3117a/D3117b, pulley tightener, 3118, the manual switch conductive mechanism, 31181, the electric conductor mounting bracket, 31182, flexible electric conductor; 31183, nonmetal spacer, the flexible insulating sheath of 31184u/31184d, nestable formula, 31185, power supply import and export terminal, 31186, insulation sleeve and insulation spacer, 31187, limit switch; S3119a, turbine, S3119a, scroll bar, 31110, the scroll bar bearing block, 32, lifting column chamber, the second level, the cavity of 32L/32R, the positive and negative staple shape in post chamber, the second level; 324, the cavity connector of slide rail/positive and negative staple shape in post chamber, the second level, 325, the location pulley yoke, 3251/3252,3261/3262,3271/3272, wheel shaft/pulley, 326a/326b, 326u, 326ua/326ub ,/326d, 326da/326db, the upper and lower pulley of 326u '/326d ' chamber, 326u3/326u4,326d3/326d4, (post chamber, the second level) upper and lower group of pulley are installed recess/upper and lower group of pulley chamber pulley recess are installed; 327, external lever bullet bearing up pulley frame, 33, third level lifting column chamber, the cavity of 33L/33R, the positive and negative staple shape in third level post chamber, 334, the cavity connector of slide rail/positive and negative staple shape in third level post chamber, 3311/3312, wheel shaft/pulley; 331u, 331d/331b, (third level lifting column chamber) pulley install recess/location pulley installation recess, and 311, first order push rod, 322, second level push rod, 333, third level push rod, 3331u, load bearing (on/standard); 3332, the 3rd screw putter bevel gear, 3333, location bearing and support, 3334, on put synchronizing wheel, D3335, on put synchronous band, D3336, on put synchronous band cover; 3337, the 3rd screw putter and third level lifting column chamber gim peg, 335, driven by shaking mechanism, 3351, kinematic link telescopic bevel gear, 3355, (kinematic link telescopic) bearing block and crane span structure, 3352, the cannulated sleeve of band chute; 3352a, separate type cannulated sleeve solid cylinder part, the flexible chute part of 3352b, separate type cannulated sleeve, 3353a/3353b, pilot pin/kinematic link, 3354, crank; 336a/336b, kinematic link locating shaft bearing/kinematic link locating shaft bearing arm, 337, built-in lever bullet bearing up pulley frame, 3371/3372, wheel shaft/pulley, 338 cannulated sleeve locating supports.

The specific embodiment

The explanation of the embodiment of relevant the utility model is graphic with reference to what add, can be in order to the specific embodiment of implementing in order to illustration the utility model.And the direction term of in the utility model, being mentioned, for example " on ", D score, " preceding ", " back ", " left side ", " right side ", " side " etc., only be direction with reference to annexed drawings.These direction terms are in order to explanation and understand the utility model, but not in order to restriction the utility model.In following examples, in different figure, same section is to represent with same numeral.

The desk with lowering or hoisting gear that the utility model provides has single lifting column and two two kinds of patterns of lifting column.Fig. 1 to 2 roughly illustrates the overall structure of desk, and Fig. 3 to Figure 11 further shows the desk of two lifting column patterns, and Figure 12 to Figure 32 further shows the desk of single lifting column pattern, and Figure 33 to Figure 51 shows the fit structure of local detail.

Referring to figs. 1 through Fig. 2.As shown in Figure 1, desk comprises desktop D1, seat plinth D2, lifting column D3, desktop load trailing arm D4 and solid shape carriage D7; Lowering or hoisting gear comprises elevating mechanism and transmission mechanism; Elevating mechanism comprises one or two lifting column D3, has post chamber connecting plate D5 between two lifting column D3, and also have a plinth connecting plate D6 between the seat plinth D2 this moment.

With reference to figure 2; Simultaneously with reference to Figure 33 to Figure 41; Each lifting column D3 comprises mutually nested first order post chamber 31, post chamber, the second level 32 and third level post chamber 33; Post chamber 31,32 and 33 cross section are rectangle, rectangle post chamber respectively by the cavity 31L/31R of positive and negative two relative staple shapes, 32L/32R, 33L/33R through the lifting pulley guide rail in the chamber 314,324 with 334 with riveted joint, screw is connected or weld to dock and form.Lower end in the first order post chamber 31 is provided with load crossbeam 312.Be respectively equipped with upper and lower two parts pulley on two walls of post chamber, the second level 32 Lower Halves, one side recess 326u3 and 326d3 are installed; Wherein the top pulley is installed recess 326u3 and is provided with one group at least; The fixing respectively pulley chamber 326u/326d in each recess 326u3/326d3 outside; Pulley chamber cavity can become single face (as: 326a/326ua/326da) two sides (as: 326u/326d) or three (as: 326u '/326d ') sealing or semiclosed rectangular housing according to the sheet metal thickness cutting and bending; Through welding, screw or riveted and fixed in the second level 32 top sheave recess 326u3/326d3 relevant positions, post chamber; Or also can thicker material through machine cuts machine-shaping (like 326b/326ub/326db) back with screw, rivet or be weldingly fixed on 32 top sheave recess 326u3/326d3 relevant positions, post chamber, the second level, cavity can be that component is opened up and down, like Figure 44 and Figure 45; Also can organize one up and down, like Figure 42 and Figure 43; Pulley chamber 326u/326d (comprising 326a/326b, 326ua/326ub, 326da/326db) cavity also is provided with the pulley consistent with post chamber notch with post chamber notch 326u3/326d3 opposite position recess 326u4/326d4 is installed; And be provided with location pulley yoke 325 and external lever bullet bearing up pulley frame 327 with the relative opposite side position, post chamber of assembly pulley recess 326u3, this post chamber.On two walls of third level post chamber 33 Lower Halves, one side, also be respectively equipped with upper and lower two parts pulley recess 331u and 331d are installed; Wherein top 331u is provided with one group of pulley at least recess is installed; On the relative post chamber opposite side two wall positions of this assembly pulley recess, be provided with location pulley recess 331b, and be provided with built-in lever bullet bearing up pulley frame 337 in the post chamber below the pulley recess 331b of this location; Between each post chamber 31,32 and 33 with pulley 3312,3372,3252 and 3262 and the cavity 31L/31R of staple shape, 32L/32R, 33L/33R in slide rail 314,324; With 334 be slidingly connected; Pulley 3312,3372,3252 and 3262 is arranged on the recess or wheel carrier in above-mentioned post chamber through wheel shaft 3251,3261,3271,3311 and 3371 respectively; Wherein second level post chamber 32 is arranged in the first order post chamber 31 and based on first order post chamber 31 and does to go up and down to slide, and third level post chamber 33 is arranged in the post chamber, the second level 32 and based on post chamber, the second level 32 and does to go up and down to slide; Opposite side is provided with location pulley yoke 325, pulley 3252 and external lever bullet bearing up pulley frame 327 and bullet bearing up pulley 3272 accordingly on post chamber, the second level wall between first order post chamber 31 and the post chamber, the second level 32; Also be provided with location pulley 3312 in the location pulley recess 331b on the third level post chamber wall opposite side between post chamber, the second level 32 and third level post chamber 33 accordingly and thereunder be provided with built-in lever bullet bearing up pulley frame 337 and bullet bearing up pulley 3372.

With reference to Figure 13 to Figure 15.When above-mentioned desk with lowering or hoisting gear has a lifting column S3, when being single lifting column up-down pattern, seat plinth S2 and desktop load trailing arm S4 also are independent, promptly all have only one.This moment, desk can go up and down through driven by shaking or motor-driven, and said lifting column S3 comprises:

---the relevant position is provided with first screw putter 311 that adapts with first order post chamber in first order post chamber 31; The relevant position is provided with second screw putter 322 that adapts with post chamber, the second level in post chamber 32, the second level, and the relevant position is provided with the 3rd screw putter 333 that adapts with third level post chamber in third level post chamber 33; The top of wherein said the 3rd screw putter 333 is established a load bearing 3331u and is rotatably connected with 33 tops, third level post chamber, and the other end of this said the 3rd screw putter 333 is through the internal thread engagement of its external screw thread and second screw putter, 322 upper ends; The other end of said second screw putter 322 is through the internal thread engagement of its external screw thread and first screw putter, 311 upper ends; The lower end of said first screw putter 311 is fixed on the load crossbeam 312 of 31 bottoms, first order post chamber; The elevating movement that second screw putter 322 and the 3rd screw putter 333 all can stretch state through the rotation of screw rod; And

---below the load bearing 3331u on the 3rd screw putter 333 tops, establish the bevel gear 3332 that is fixedly connected with the 3rd screw putter 333; Can establish a screw rod location bearing 3333 for 3332 times at the 3rd screw putter bevel gear, this screw rod location bearing is fixedly installed on the 33 chamber walls of third level post chamber through a support;

When going up and down with driven by shaking:

---in lifting column desktop load trailing arm S4 or thereunder be provided with hand-operated lifting crank mechanism 335, this mechanism is made up of the bearing block 3355 of crank 3354, kinematic link 3353a, kinematic link axle bolt 3353b, kinematic link telescopic 3352 and fixed conveyor connecting rod telescopic; Bearing block 3355 is fixedly connected on two walls in third level post chamber 33 through a crane span structure; Kinematic link telescopic 3,352 one ends are the cannulated sleeve that both sides have two chutes; The other end is relative thinner solid cylinder; The solid cylinder of kinematic link telescopic 3352 is fixedly connected with a bevel gear 3351 after passing bearing block 3355 upper bearing (metal) endoporus; 3332 one-tenth an angle of 90 degrees engagements of 3351 of this bevel gears and the 3rd screw putter bevel gear, (also removable telescopic 3352a and two parts that can break of solid cylinder 3352b of being with chute that are divided into of this kinematic link telescopic 3352 can tie through joint tongue or transmission between them and connect transmission.) end kinematic link 3353a that is provided with a transmission pilot pin 3353b is arranged in the kinematic link telescopic 3352; This kinematic link 3353a is can be along transversal stretching slippage in the chute length distance in kinematic link telescopic 3352 cannulated sleeves under the restriction of transmission pilot pin 3353b, but telescopic 3352 can only rotate under the drive of kinematic link pilot pin 3353b synchronously; The other end of kinematic link 3353a is provided with crank 3354, and is fixed in the desktop load trailing arm S4 or the below through a bearing block 336a or bearing fixing arm 336b;

When going up and down with motor-driven:

Referring to Figure 27 to Figure 29; In first order post chamber 31, establish a load bearing S3113d on the lower end load crossbeam 312; This bearing is nested in the turbine S3119a; This turbine top is provided with the interface that joins with first order push rod 311 lower ends; On the chamber wall of 31 both sides, first order post chamber, respectively establish a load bearing block 31110, scroll bar S3119b and turbine S3119a engagement also are arranged on this diaxon bearing 31110, and the end of scroll bar S3119b links to each other with the rotor of the motor 3116 that is arranged on 31 outsides, first order post chamber;

Or also can this mode be arranged on 33 upper ends, third level post chamber; Referring to Figure 30 to Figure 32; The turbine S3119a that is fixedly connected with the 3rd screw putter 333 is established in bevel gear 3332 positions below the load bearing 3331u on the 3rd screw putter 333 tops; On the wall of chamber, 33 both sides, third level post chamber, respectively establish the bearing block 31110 that a tape spool holds; Scroll bar S3119b and turbine S3119a engagement also are located on this diaxon bearing 31110, and the end of scroll bar S3119b links to each other with the rotor of third level post chamber 33 motor 3116 outward, and the lower end of first screw putter 311 then directly is fixed on the load crossbeam 312.

The other type that motor-driven is gone up and down:

Lifting column can be with synchronously through the motor-driven synchronizing wheel and realize that this transmission mechanism has two kinds of identical set-up modes of essence effect:

Referring to Figure 24 to Figure 26, when this transmission mechanism was located at 33 upper ends, third level post chamber, first screw putter, 311 lower ends were fixed on the load crossbeam 312 of lower end in the first order post chamber 31; And below the load bearing 3331u on the 3rd screw putter 333 tops, fixedly install a synchronizing wheel 3334; On the chamber wall of third level post chamber 33 1 sides, offer a punch holes with synchronizing wheel 3334 corresponding height positions, on put synchronous band S3114u and pass this hole the 3rd screw putter synchronizing wheel 3334 is linked to each other with the epitrochanterian driving synchronizing wheel S3115 of motor 3116 outside being arranged on third level post chamber 33 1 sides;

When this transmission mechanism was located at 31 lower ends, first order post chamber, the 3rd screw putter 333 tops were inserted it through a bolt 3337 (referring to Fig. 9 or Figure 11) and are fixedly connected with third level post chamber 33 upper end bolts referring to Figure 21 to Figure 23; In first order post chamber 31, establish a load bearing S3113d on the load crossbeam 312 of lower end, this load bearing is nested in the synchronizing wheel 3112d, and this synchronizing wheel top is fixedly connected with first screw putter, 311 lower ends; On the chamber wall of first order post chamber 31 1 sides, offer a punch holes, pass this hole with S3114b synchronously the first screw putter synchronizing wheel 3112d is linked to each other with driving synchronizing wheel S3115 on the rotor that is arranged on first order post chamber 31 1 sides outside with synchronizing wheel 3112d corresponding height position;

Fig. 3 to Figure 11 further shows the desk of two lifting column patterns.As shown in Figure 3; The desk with lowering or hoisting gear of two lifting column patterns; Its lifting column, seat plinth and lifting column desktop load trailing arm are the symmetrical both sides, desktop below of being located at, and lifting column has two, link to each other with the solid shape carriage of desktop through seat plinth carrier bar, post chamber connecting plate and synchronous band cover between the two.

With reference to Fig. 4 and Fig. 5, the desk of two lifting column patterns that driven by shaking is gone up and down has:

---the relevant position is provided with first screw putter 311 that adapts with first order post chamber 31 in first order post chamber 31; The relevant position is provided with second screw putter 322 that adapts with post chamber, the second level 32 in post chamber 32, the second level, and the relevant position is provided with the 3rd screw putter 333 that adapts with third level post chamber 33 in third level post chamber 33; The top of wherein said the 3rd screw putter 333 is established a load bearing 3331u and is rotatably connected with 33 tops, third level post chamber, and the other end of this said the 3rd screw putter 333 is through the internal thread engagement of its external screw thread and second screw putter, 322 upper ends; The other end of said second screw putter 322 is through the internal thread engagement of its external screw thread and first screw putter, 311 upper ends; The lower end of said first screw putter 311 is fixed on the load crossbeam 312 of 31 bottoms, first order post chamber; The elevating movement that second screw putter 322 and the 3rd screw putter 333 all can stretch state through the rotation of screw rod;

---below the load bearing 3331u on the 3rd screw putter 333 tops of hand-operated lifting crank 3,354 one side lifting columns, establish the bevel gear 3332 that is fixedly connected with the 3rd screw putter 333; Can establish a screw rod location bearing 3333 for 3332 times at the 3rd screw putter 333 bevel gears, this screw rod location bearing 3333 is fixedly installed on the 33 chamber walls of third level post chamber through a support;

---in lifting column desktop load trailing arm D4 or thereunder be provided with hand-operated lifting crank mechanism 335, this mechanism has the bearing block 3355 of crank 3354, kinematic link 3353a, kinematic link telescopic 3352 and fixed conveyor connecting rod telescopic 3352 to constitute; Bearing block 3355 is fixed on two walls in third level post chamber 33 through a crane span structure; Kinematic link telescopic 3,352 one ends are the cannulated sleeve 3352a that both sides have two chutes; The other end is relative thinner solid cylinder 3352b; The solid cylinder 3352b of kinematic link telescopic 3352a is fixedly connected with a bevel gear 3351 after passing bearing block 3355 upper bearing (metal) endoporus, 3332 one-tenth an angle of 90 degrees engagements of 3351 of this bevel gears and the 3rd screw putter bevel gear; The kinematic link 3353a that one end is provided with a transmission pilot pin 3353b is arranged in the kinematic link telescopic 3352; This kinematic link 3353a is can be along transversal stretching slippage in the chute length distance in cannulated sleeve under the restriction of transmission pilot pin 3353b, but kinematic link telescopic 3352 can only rotate under the drive of kinematic link pilot pin 3353b synchronously; The other end of kinematic link 3353a is provided with crank 3354, and through a bearing block 336a or bearing fixing arm 336b be fixed in the desktop load trailing arm D4 or below; And

---establish the synchronizing wheel 3334 that is fixedly connected with the 3rd screw putter 333 above or below the bevel gear 3332 that is fixedly connected on the 3rd screw putter 333 in the third level lifting column chamber 33 that is provided with hi/lo crank 3,354 one side lifting columns; Fixedly install too on the same position of the 3rd screw putter 333 in another third level lifting column chamber 33 that is symmetrical set one with highly consistent identical synchronizing wheel 3334, two synchronizing wheels 3334 of this synchronizing wheel 3334 between with synchronous band D3335 connection.

With reference to Fig. 6 to Figure 11, except that hand elevating mechanism, other running part was basic identical when the desk of two up-down pillars adopted motor-driven to go up and down:

---like Fig. 6 to Fig. 8; The relevant position is provided with first screw putter 311 that adapts with first order post chamber 31 in first order post chamber 31; The relevant position is provided with second screw putter 322 that adapts with post chamber, the second level 32 in post chamber 32, the second level, and the relevant position is provided with the 3rd screw putter 333 that adapts with third level post chamber 33 in third level post chamber 33; The top bolt of wherein said the 3rd screw putter 333 is inserted a fixed axis bolt 3337 and is fixedly connected with 33 tops, third level post chamber, and the other end of this said the 3rd screw putter 333 is through the internal thread engagement of its external screw thread and second screw putter, 322 upper ends; The other end of said second screw putter 322 is through the internal thread engagement of its external screw thread and first screw putter, 311 upper ends; The other end of said first screw putter 311 (lower end) is fixed on the synchronizing wheel 3112s in the 31 lower end seat plinth of lifting column first order post chamber, and synchronizing wheel 3112s is arranged on the load crossbeam 312 through load bearings D 3113d; The elevating movement that second screw putter 322 and the 3rd screw putter 333 all can stretch state through the rotation of screw rod; And

---be connected and be symmetrical set present plinth connecting plate D6 both sides as Fig. 6 to Fig. 8 lifting column first order post chamber 31 and seat plinth D2 are vertical; The load crossbeam 312 of 31 lower ends, first order post chamber is provided with load bearings D 3113d; This two symmetrical load bearings D 3113d respectively is nested in the identical synchronizing wheel 3112s; Synchronizing wheel 3112s top and one-level push rod 311 lower ends; Be with d3114a through the continuous two symmetrical synchronizing wheel 3112s of a seat plinth connecting plate D6 synchronously, the motor 3116 of band synchronizing wheel D3115 is located at a plinth connecting plate D6 upward and through two pulley tightener D3117a makes motor drum in-phase D3115 agree with being with d3114a synchronously; Or this mode also can be provided with the motor 3116 of above-mentioned band synchronizing wheel D3115 the both sides, front and back that present plinth D2 installs first order lifting column 31 positions; Synchromesh gear 3112d on the load bearings D 3113d that 311 lower ends, first order post chamber in the motor 3,116 one side seat plinth D2 are installed is made as the synchronizing wheel of double-layer integrally; When band d3114a connects the synchronizing wheel 3112s of 31 lower ends, left-right symmetric first order post chamber synchronously with one, be with d3114b to connect synchronously with another and be arranged on motor 3116 epitrochanterian synchronizing wheel D3115 in the 31 rear side seat plinth D2 of first order post chamber; Third level push rod 333 upper ends are then established a bolt 3337 and are located by connecting with chamber, both sides, 33 upper end, third level post chamber wall bolt is slotting.

With reference to Figure 50 and Figure 51, the desk of single, double lifting column electric up-down pattern adopts the hand switch pattern also to have built-in telescopic safe electrically conducting manner.Load crossbeam 312 sides that seat plinth D2 installs in the position, lifting column chamber are provided with an electric conductor mounting bracket 31181 (this support also can adopt nonmetallic materials), and this electric conductor mounting bracket is provided with three electrode connection stake installing holes; The top in the third level lifting column chamber 33 directly over this electric conductor mounting bracket 31181 is provided with a nonmetal spacer 31183, on the nonmetal spacer 31183 with under electric conductor mounting bracket 31181 relative positions be provided with three electrode connection stake installing holes equally; Telescopic electric conductor 31182 is made up of telescopic antenna or spring; In the electrode connection stake installing hole on the nonmetal spacer 31183 above two ends are separately fixed at and the electric conductor mounting bracket 31181 of below, be provided with insulation sleeve and insulation spacer 31186 in the electrode connection stake installing hole of lower end electric conductor metal mounting bracket 31181 during installation; The telescopic electric conductor 31182 outer flexible insulating sheath 31184u/31184d of nestable formula that are provided with; The flexible insulating sheath 31184u/31184d of nestable formula is two-layer nestable alternately inside and outside being; The length of two insulation sleeves is about about 55% of electric conductor 31182 extension length; The end of ectonexine insulation sleeve 31184u/31184d be separately fixed on the electric conductor mounting bracket 31181 of below with the nonmetal spacer 31183 of top on, nonmetal spacer 31183 drives another layer insulating sheath 31184d slippage of going up and down in opposite directions relatively with its fixing insulating sheath 31184u when rising with third level post chamber 33; The importing of power supply and leading-out terminal 31185 are connected in the electrode stake at two ends up and down.

With reference to Figure 12 to Figure 14; The utility model " single-column same table " also is provided with rack-and-pinion desktop dynamic equilibrium mechanism; This mechanism is made up of flexible tooth bar group and synchromesh gear group S8a; Flexible tooth bar group is the toothed rack S8a1 bar shaped square column S8a2 identical with another root thickness setting of sliding of fitting, and the synchromesh gear group is that circular shaft S8a4 two ends respectively fixedly install an identical gear S8a3; Flexible tooth bar group be about two groups arranged side by side, be symmetricly set on the both sides of the single lifting column S3 in desktop below respectively, dynamically connect control with the synchromesh gear group between the two, the two ends of flexible tooth bar group are the engaging lug S8b6 on Connection Block plinth S2 and the table top with bearer respectively; The tooth bar S8a1 and the bar shaped square column S8a2 slip bond end of two flexible tooth bar groups are respectively established a pair of slippage spacer S8a5/S8a6; The end of the spacer S8a5 of two band synchronous gear shaft installing holes is fixedly installed on bar shaped square column S8a2 one end both sides respectively; Two synchromesh gears (axle S8a4 two ends) be installed in the synchromesh gear installing hole of spacer S8a5 and respectively engagement be arranged on bar shaped square column S8a2 and slide on the tooth bar S8a1 of two symmetries of overlap joint the rearward position on the present plinth both sides of the lower end hinged securement of two bar shaped square column S8a2; The end of the spacer S8a6 of another group band stay hook is separately fixed at the both sides of tooth bar S8a1 slip bond end; The other end of this spacer S8a6 then slides and hooks bar shaped square column S8a2, and the other end (upper end) of tooth bar S8a1 of two symmetries is articulated in respectively on the engaging lug S8b6 of table top with bearer of front side, desktop below, single lifting column S3 both sides; Two tooth bar S8a1 and bar shaped square column S8a2 can the synchronously level and smooth telescopic movings of symmetry.

With reference to Figure 16 to Figure 20; " single-column same table " also is provided with diagonal brace rod-type desktop dynamic equilibrium mechanism; Rear side in single lifting column first order lifting column chamber 31 fixedly installs the vertical stability column that (S8b3a) or two (S8b3b) exists side by side; The lower end of this stability column is fixed on the rear side of first order lifting column 31 through a stability column lower carriage S8b4a/S8b4b; The upper end is fixed on the upper end of first order lifting column 31 through another stability column upper bracket S8b5a/S8b5b; Establish on the stability column S8b3a/S8b3b one can be on vertical stability column S8b3a/S8b3b the vertical stability column slippage cover of the hound of slippage S8b2a (twin columns then use the vertical stability column slippage cover of the fixing two-tube hound of existing side by side S8b2b) up and down; When desktop is reduced to when minimum; Slippage cover S8b2a/S8b2b is in vertical stability column S8b3a/S8b3b lower end, and the lower end of two symmetrical hound S8b1a/S8b1b is connected in the left and right sides of the vertical stability column slippage cover of hound S8b2a/S8b2b, and the angled respectively left-right symmetric of the other end of this hound is connected on the desktop S1u bottom bracket engaging lug S8b6; And when lifting column S3 rose, the vertical stability column slippage cover of hound S8b2a/S8b2b rose along vertical stability column S8b3a/S8b3b slippage with hound S8b1a/S8b1b simultaneously; Hound can be, and single (S8b1a) is symmetricly set in lifting column S3 both sides under the desktop S1u, also can adopt V-arrangement group (S8b1b) to be symmetricly set in lifting column S3 both sides under the desktop S1u.

Referring to Fig. 4-to the described desk of Fig. 5, Figure 14 to Figure 15, Figure 20, Figure 46 and Figure 48 with single (two) lifting column; Also set up less important relatively establishing function; 33 top rear sides are established a desk lamp, computer display establishing mounting bracket D (S) 11 in lifting column third level post chamber; Establishing support D (S) 11 is fixed on third level post chamber 33 upper end rear sides, also can be installed on the encorbelmenting of desktop load trailing arm D (S) 4 third level post chambeies 33 rear sides; The establishing support is overlooked and is V-arrangement or Y shape; V-arrangement of choosing or Y shape are pitched a terminal side and are provided with Desk lamp support inserting column installing hole; Can supply commercially available establishing desk lamp to peg graft, opposite side is provided with the display/panel bracket mounting socket, and display screen is not before interface forms unified standard; Will be according to its different model otherwise designed same table with scalable display screen special stand; The establishing support D (S) 11 of two lifting column same table also can directly prolong the D that encorbelments (S) 4 of both sides desktop load trailing arm D (S) 4 third level post chambeies 33 rear sides, and is provided with and jack is installed on it, constitutes the left and right sides single-column arranged side by side establishing support of encorbelmenting and sees D (S) 11b of Figure 46.

In addition; The application's desk also can have the desktop angle regulator; With reference to D12 among Figure 11, be used to regulate the desktop angle of inclination, before being embodied in, it in continuous patent (200710038315) description has been arranged; Therefore those skilled in the art can will not give unnecessary details with reference to preceding continuous patent or other existing techniques in realizing fully.

Below only be the concrete exemplary applications of the utility model, the protection domain of the utility model is not constituted any limitation.Except that the foregoing description, the utility model can also have other embodiment.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop within the utility model scope required for protection.

Claims

1. desk with lowering or hoisting gear is characterized in that: said desk comprises desktop, seat plinth, lowering or hoisting gear, desktop load trailing arm and solid shape carriage; Lowering or hoisting gear comprises elevating mechanism and transmission mechanism; Elevating mechanism comprises mutually nested first order post chamber, post chamber, the second level and third level post chamber; The cross section in post chamber is a rectangle, this rectangle post chamber by the cavity of positive and negative two relative staple shapes through the lifting pulley guide rail in the chamber with riveted joint, screw connect, welding butt joint or be made of one piece; Lower end in first order post chamber is provided with the load crossbeam; Be respectively equipped with upper and lower two parts pulley on two walls of post chamber, second level Lower Half one side recess is installed; Wherein the top pulley is installed recess and is provided with one group at least; The semiclosed rectangular housing that a fixing respectively pulley chamber, each recess outside, pulley chamber cavity can single faces, two sides or three side sealing close is fixed on top sheave recess relevant position, post chamber, the second level through welding, screw or rivet; Cavity component is up and down opened, and also can organize one up and down; Pulley chamber, post chamber cavity also is provided with the pulley consistent with post chamber notch with post chamber notch opposite position recess is installed; And be provided with location pulley yoke and external lever bullet bearing up pulley frame in the opposite side position, post chamber relative with this post chamber assembly pulley recess; On two walls of third level post chamber Lower Half one side, also be respectively equipped with upper and lower two parts pulley recess is installed; Wherein top is provided with one group of pulley at least recess is installed; On the relative post chamber opposite side two wall positions of this assembly pulley recess, be provided with location pulley recess, and be provided with built-in lever bullet bearing up pulley frame in the post chamber below this location pulley recess; Be slidingly connected with pulley and slide rail between each post chamber; Pulley is arranged on the recess or wheel carrier in above-mentioned post chamber through wheel shaft; Wherein post chamber in the second level is arranged in the first order post chamber and based on first order post chamber and does to go up and down to slide, and third level post chamber is arranged in the post chamber, the second level and based on post chamber, the second level and does to go up and down to slide; Opposite side is provided with location pulley yoke, pulley and external lever bullet bearing up pulley frame and bullet bearing up pulley accordingly on post chamber, the second level wall between first order post chamber and the post chamber, the second level; Also be provided with the location pulley in the location pulley recess on the third level post chamber wall opposite side between post chamber, the second level and third level post chamber accordingly and thereunder be provided with built-in lever bullet bearing up pulley frame and bullet bearing up pulley.

2. the desk with lowering or hoisting gear according to claim 1 is characterized in that: lifting column, seat plinth and the desktop load trailing arm of said desktop below is independent, and lifting column only has one, and lifting column goes up and down through driven by shaking,

In lifting column desktop load trailing arm or thereunder be provided with hand-operated lifting crank mechanism, this mechanism is made up of the bearing block of crank, kinematic link, kinematic link telescopic and fixed conveyor connecting rod telescopic; Bearing block is fixedly connected on two walls in third level post chamber through a crane span structure; Kinematic link telescopic one end is the cannulated sleeve that both sides have two chutes; The other end is relative thinner solid cylinder; This kinematic link telescopic and its solid cylinder are one-body molded or be two parts that can break, and when being two parts that can break, are to tie through joint tongue or transmission to connect transmission; The solid cylinder of kinematic link telescopic is fixedly connected with a bevel gear after passing bearing block upper bearing (metal) endoporus, and this bevel gear then becomes an angle of 90 degrees engagement with the 3rd screw putter bevel gear; The kinematic link that one end is provided with a transmission pilot pin is arranged in the kinematic link telescopic; This kinematic link is can be along transversal stretching slippage in the chute length distance in cannulated sleeve under the restriction of transmission pilot pin, but telescopic can only rotate under the drive of kinematic link pilot pin synchronously; The other end of kinematic link is provided with crank, and is fixed in the desktop load trailing arm or the below through an axle sleeve, bearing block or bearing fixing arm.

3. the desk with lowering or hoisting gear according to claim 1 and 2; It is characterized in that: lifting column, seat plinth and the desktop load trailing arm of said desktop below are independent; Lifting column only has one; It is characterized in that lifting column realizes that through the motor driving scroll turbine this transmission mechanism has two kinds of set-up modes that the essence effect is identical:

When this transmission mechanism was located at upper end, third level post chamber, the first screw putter lower end was fixed on the load crossbeam of lower end in the first order post chamber; And below the load bearing on the 3rd screw putter top, fixedly install a turbine; On the chamber wall of both sides, third level post chamber, respectively establish the bearing block that a tape spool holds with turbine corresponding height position, scroll bar and turbine engagement also are arranged on this diaxon bearing, and an end of scroll bar links to each other with the rotor of the motor that is arranged on the outside, third level post chamber;

When this transmission mechanism was located at lower end, first order post chamber, the 3rd screw putter top was inserted it through a bolt and is fixedly connected with upper end, third level post chamber bolt; In first order post chamber, establish a load bearing on the load crossbeam of lower end, this bearing is nested in the turbine, and the turbine top is fixedly connected with the first screw putter lower end; On the chamber wall of both sides, first order post chamber, respectively establish the bearing block that a tape spool holds with turbine corresponding height position, scroll bar and turbine engagement also are arranged on this diaxon bearing, and an end of scroll bar links to each other with the rotor of the motor that is arranged on the outside, first order post chamber.

4. the desk with lowering or hoisting gear according to claim 3 is characterized in that, can adopt synchronizing wheel to be with the kind of drive synchronously, and lifting column is with synchronously through the motor-driven synchronizing wheel and is realized that this transmission mechanism has two kinds of set-up modes that the essence effect is identical:

When this transmission mechanism was located at upper end, third level post chamber, the first screw putter lower end was fixed on the load crossbeam of lower end in the first order post chamber; And below the load bearing on the 3rd screw putter top, fixedly install a synchronizing wheel; On the chamber wall of third level post chamber one side, offer a punch holes with synchronizing wheel corresponding height position, synchronously band pass this hole with the 3rd screw putter synchronizing wheel be arranged on third level post chamber one side outside rotor on the driving synchronizing wheel link to each other;

When this transmission mechanism was located at lower end, first order post chamber, the 3rd screw putter top was inserted it through a bolt and is fixedly connected with upper end, third level post chamber bolt; In first order post chamber, establish a load bearing on the load crossbeam of lower end, this bearing is nested in the synchronizing wheel, and the synchronizing wheel top is fixedly connected with the first screw putter lower end; On the chamber wall of first order post chamber one side, offer a punch holes with synchronizing wheel corresponding height position, synchronously band pass this hole with the first screw putter synchronizing wheel be arranged on first order post chamber one side outside rotor on the driving synchronizing wheel link to each other.

5. the desk with lowering or hoisting gear according to claim 1; It is characterized in that its lifting column, seat plinth and lifting column desktop load trailing arm are left-right symmetric and are located at both sides, desktop below, lifting column has two; Link to each other through seat plinth carrier bar, post chamber connecting plate, synchronous band cover and the solid shape carriage of desktop between the two; And with the driven by shaking up-down, simultaneously

The relevant position is provided with first screw putter that adapts with first order post chamber in first order post chamber; The relevant position is provided with second screw putter that adapts with post chamber, the second level in post chamber, the second level, and the relevant position is provided with the 3rd screw putter that adapts with third level post chamber in third level post chamber; The top of wherein said the 3rd screw putter is established a load bearing and is rotatably connected with top, third level post chamber, and the other end of this said the 3rd screw putter is through the internal thread engagement of its external screw thread and second screw putter upper end; The other end of said second screw putter is through the internal thread engagement of its external screw thread and first screw putter upper end; The other end of said first screw putter is the lower end, is fixed on the load crossbeam of bottom, first order post chamber; The elevating movement that second screw putter and the 3rd screw putter all can stretch state through the rotation of screw rod;

Establish the synchronizing wheel that is fixedly connected with the 3rd screw putter above or below the bevel gear that is fixedly connected on the 3rd screw putter in being provided with the third level lifting column chamber of hi/lo crank one side; Fixedly install too on the same position of the 3rd screw putter in the third level lifting column chamber of another lifting column that is symmetrical set one with the consistent identical synchronizing wheel of this synchromesh gear height, connect with synchronous band between two synchronizing wheels.

6. according to claim 1 or 5 described desks with lowering or hoisting gear; It is characterized in that: lifting column, seat plinth and lifting column desktop load trailing arm are the symmetrical both sides, desktop below of being located at; Lifting column has two; Link to each other through a plinth carrier bar, post chamber connecting plate, synchronous band cover and the solid shape carriage of desktop between the two, lifting column passes through the motor-driven up-down, and

7. the desk with lowering or hoisting gear according to claim 3 is characterized in that: the load crossbeam side that the seat plinth is installed in the position, lifting column chamber is provided with an electric conductor mounting bracket, and the electric conductor mounting bracket is provided with three electrode connection stake installing holes; The top in the third level lifting column chamber directly over this electric conductor mounting bracket is provided with a nonmetal spacer, on the nonmetal spacer with under electric conductor mounting bracket relative position be provided with three electrode connection stake installing holes equally; Telescopic electric conductor is made up of telescopic antenna or spring; In the electrode connection stake installing hole on the nonmetal spacer above two ends are separately fixed at and the electric conductor mounting bracket of below, be provided with insulation sleeve and insulation spacer in the electrode connection stake installing hole of lower end electric conductor metal mounting bracket; Telescopic electric conductor is provided with flexible insulating sheath outward; Insulating sheath is two-layer nestable alternately inside and outside being; The length of two insulation sleeves is about about 55% of electric conductor extension length; On the electric conductor mounting bracket below one end of ectonexine insulation sleeve is separately fixed at and on the nonmetal spacer of top, when going up and down with lifting column, nonmetal spacer drives relative another layer insulating sheath up-down slippage with its fixing insulating sheath; The importing of power supply and leading-out terminal are connected in the electrode stake at two ends up and down.

8. the desk with lowering or hoisting gear according to claim 4 is characterized in that: the load crossbeam side that the seat plinth is installed in the position, lifting column chamber is provided with an electric conductor mounting bracket, and the electric conductor mounting bracket is provided with three electrode connection stake installing holes; The top in the third level lifting column chamber directly over this electric conductor mounting bracket is provided with a nonmetal spacer, on the nonmetal spacer with under electric conductor mounting bracket relative position be provided with three electrode connection stake installing holes equally; Telescopic electric conductor is made up of telescopic antenna or spring; In the electrode connection stake installing hole on the nonmetal spacer above two ends are separately fixed at and the electric conductor mounting bracket of below, be provided with insulation sleeve and insulation spacer in the electrode connection stake installing hole of lower end electric conductor metal mounting bracket; Telescopic electric conductor is provided with flexible insulating sheath outward; Insulating sheath is two-layer nestable alternately inside and outside being; The length of two insulation sleeves is about about 55% of electric conductor extension length; On the electric conductor mounting bracket below one end of ectonexine insulation sleeve is separately fixed at and on the nonmetal spacer of top, when going up and down with lifting column, nonmetal spacer drives relative another layer insulating sheath up-down slippage with its fixing insulating sheath; The importing of power supply and leading-out terminal are connected in the electrode stake at two ends up and down.

9. the desk with lowering or hoisting gear according to claim 6 is characterized in that: the load crossbeam side that the seat plinth is installed in the position, lifting column chamber is provided with an electric conductor mounting bracket, and the electric conductor mounting bracket is provided with three electrode connection stake installing holes; The top in the third level lifting column chamber directly over this electric conductor mounting bracket is provided with a nonmetal spacer, on the nonmetal spacer with under electric conductor mounting bracket relative position be provided with three electrode connection stake installing holes equally; Telescopic electric conductor is made up of telescopic antenna or spring; In the electrode connection stake installing hole on the nonmetal spacer above two ends are separately fixed at and the electric conductor mounting bracket of below, be provided with insulation sleeve and insulation spacer in the electrode connection stake installing hole of lower end electric conductor metal mounting bracket; Telescopic electric conductor is provided with flexible insulating sheath outward; Insulating sheath is two-layer nestable alternately inside and outside being; The length of two insulation sleeves is about about 55% of electric conductor extension length; On the electric conductor mounting bracket below one end of ectonexine insulation sleeve is separately fixed at and on the nonmetal spacer of top, when going up and down with lifting column, nonmetal spacer drives relative another layer insulating sheath up-down slippage with its fixing insulating sheath; The importing of power supply and leading-out terminal are connected in the electrode stake at two ends up and down.

10. the desk with lowering or hoisting gear according to claim 2; It is characterized in that: described desktop stabilizing mechanism is made up of flexible tooth bar group and synchromesh gear group; Flexible tooth bar group is the setting of sliding of fitting of the toothed rack bar shaped square column identical with another root thickness, and the synchromesh gear group is that circular shaft two ends respectively fixedly install an identical gear; Flexible tooth bar be about two groups arranged side by side, be symmetricly set on the both sides of the single lifting column in desktop below respectively, connect with the synchromesh gear group between the two and dynamically control, the two ends of flexible tooth bar group are the engaging lug on Connection Block plinth and the table top with bearer respectively; The tooth bar and the bar shaped square column slip bond end of two flexible tooth bar groups are respectively established a pair of slippage spacer; One end of the spacer of two band synchronous gear shaft installing holes is fixedly installed on bar shaped square column one end both sides respectively; Two synchromesh gears are installed in and mesh on the tooth bar that is arranged on two symmetries that overlap with the slip of bar shaped square column the rearward position on the present plinth both sides of the lower end hinged securement of two bar shaped square columns in the synchromesh gear installing hole respectively; One end of the spacer of another group band stay hook is separately fixed at the both sides of tooth bar slip bond end; The other end of this spacer then slides and hooks the bar shaped square column; The other end of tooth bar of two symmetries is upper ends, is articulated in respectively on the engaging lug of table top with bearer of front side, desktop below, single lifting column both sides; Two tooth bars and bar shaped square column can the synchronously level and smooth telescopic movings of symmetry.

11. the desk with lowering or hoisting gear according to claim 3; It is characterized in that: described desktop stabilizing mechanism is made up of flexible tooth bar group and synchromesh gear group; Flexible tooth bar group is the setting of sliding of fitting of the toothed rack bar shaped square column identical with another root thickness, and the synchromesh gear group is that circular shaft two ends respectively fixedly install an identical gear; Flexible tooth bar be about two groups arranged side by side, be symmetricly set on the both sides of the single lifting column in desktop below respectively, connect with the synchromesh gear group between the two and dynamically control, the two ends of flexible tooth bar group are the engaging lug on Connection Block plinth and the table top with bearer respectively; The tooth bar and the bar shaped square column slip bond end of two flexible tooth bar groups are respectively established a pair of slippage spacer; One end of the spacer of two band synchronous gear shaft installing holes is fixedly installed on bar shaped square column one end both sides respectively; Two synchromesh gears are installed in and mesh on the tooth bar that is arranged on two symmetries that overlap with the slip of bar shaped square column the rearward position on the present plinth both sides of the lower end hinged securement of two bar shaped square columns in the synchromesh gear installing hole respectively; One end of the spacer of another group band stay hook is separately fixed at the both sides of tooth bar slip bond end; The other end of this spacer then slides and hooks the bar shaped square column; The other end of tooth bar of two symmetries is upper ends, is articulated in respectively on the engaging lug of table top with bearer of front side, desktop below, single lifting column both sides; Two tooth bars and bar shaped square column can the synchronously level and smooth telescopic movings of symmetry.

12. the desk with lowering or hoisting gear according to claim 4; It is characterized in that: described desktop stabilizing mechanism is made up of flexible tooth bar group and synchromesh gear group; Flexible tooth bar group is the setting of sliding of fitting of the toothed rack bar shaped square column identical with another root thickness, and the synchromesh gear group is that circular shaft two ends respectively fixedly install an identical gear; Flexible tooth bar be about two groups arranged side by side, be symmetricly set on the both sides of the single lifting column in desktop below respectively, connect with the synchromesh gear group between the two and dynamically control, the two ends of flexible tooth bar group are the engaging lug on Connection Block plinth and the table top with bearer respectively; The tooth bar and the bar shaped square column slip bond end of two flexible tooth bar groups are respectively established a pair of slippage spacer; One end of the spacer of two band synchronous gear shaft installing holes is fixedly installed on bar shaped square column one end both sides respectively; Two synchromesh gears are installed in and mesh on the tooth bar that is arranged on two symmetries that overlap with the slip of bar shaped square column the rearward position on the present plinth both sides of the lower end hinged securement of two bar shaped square columns in the synchromesh gear installing hole respectively; One end of the spacer of another group band stay hook is separately fixed at the both sides of tooth bar slip bond end; The other end of this spacer then slides and hooks the bar shaped square column; The other end of tooth bar of two symmetries is upper ends, is articulated in respectively on the engaging lug of table top with bearer of front side, desktop below, single lifting column both sides; Two tooth bars and bar shaped square column can the synchronously level and smooth telescopic movings of symmetry.

13. the desk with lowering or hoisting gear according to claim 10; It is characterized in that: the rear side in single lifting column first order lifting column chamber is set with one or two vertical stability column of existing side by side; The lower end of stability column is fixed on the rear side of first order lifting column through a reference column lower carriage; The upper end is fixed on the upper end of first order lifting column through another stability column upper bracket, establish on the reference column one can be on vertical stability column the vertical stability column slippage of the hound cover of slippage up and down, twin columns then use the fixing two-tube slippage cover of existing side by side; When desktop is reduced to when minimum; The slippage cover is in vertical stability column lower end, and the lower end of two symmetrical hounds is connected in the left and right sides of slippage cover, and the angled respectively left-right symmetric of the other end of hound is connected on the desktop bottom bracket engaging lug; When lifting column rose, the slippage cover rose along vertical stability column slippage with hound simultaneously; Hound can be the single lifting column both sides under the desktop that are symmetricly set in, and also can adopt the V-arrangement group to be symmetricly set in lifting column both sides under the desktop.

14. the desk with lowering or hoisting gear according to claim 11; It is characterized in that: the rear side in single lifting column first order lifting column chamber is set with one or two vertical stability column of existing side by side; The lower end of stability column is fixed on the rear side of first order lifting column through a reference column lower carriage; The upper end is fixed on the upper end of first order lifting column through another stability column upper bracket, establish on the reference column one can be on vertical stability column the vertical stability column slippage of the hound cover of slippage up and down, twin columns then use the fixing two-tube slippage cover of existing side by side; When desktop is reduced to when minimum; The slippage cover is in vertical stability column lower end, and the lower end of two symmetrical hounds is connected in the left and right sides of slippage cover, and the angled respectively left-right symmetric of the other end of hound is connected on the desktop bottom bracket engaging lug; When lifting column rose, the slippage cover rose along vertical stability column slippage with hound simultaneously; Hound can be the single lifting column both sides under the desktop that are symmetricly set in, and also can adopt the V-arrangement group to be symmetricly set in lifting column both sides under the desktop.

15. the desk with lowering or hoisting gear according to claim 10; It is characterized in that: the rear side in single lifting column first order lifting column chamber is set with one or two vertical stability column of existing side by side; The lower end of stability column is fixed on the rear side of first order lifting column through a reference column lower carriage; The upper end is fixed on the upper end of first order lifting column through another stability column upper bracket, establish on the reference column one can be on vertical stability column the vertical stability column slippage of the hound cover of slippage up and down, twin columns then use the fixing two-tube slippage cover of existing side by side; When desktop is reduced to when minimum; The slippage cover is in vertical stability column lower end, and the lower end of two symmetrical hounds is connected in the left and right sides of slippage cover, and the angled respectively left-right symmetric of the other end of hound is connected on the desktop bottom bracket engaging lug; When lifting column rose, the slippage cover rose along vertical stability column slippage with hound simultaneously; Hound can be the single lifting column both sides under the desktop that are symmetricly set in, and also can adopt the V-arrangement group to be symmetricly set in lifting column both sides under the desktop.

16. the desk with lowering or hoisting gear according to claim 1; It is characterized in that: rear side is established a desk lamp, computer display establishing mounting bracket on top, lifting column third level post chamber; Mounting bracket is fixed on third level post chamber upper end rear side, also can be installed on the encorbelmenting of desktop load trailing arm third level post chamber rear side; The establishing support is overlooked and is V-arrangement; The V-arrangement of choosing is pitched a terminal side and is provided with Desk lamp support inserting column installing hole; Supply commercially available establishing desk lamp to peg graft, opposite side is provided with the display/panel bracket mounting socket, and the establishing support of two lifting column same table also can directly prolong encorbelmenting of both sides desktop load trailing arm third level post chamber rear side; And be provided with and jack be installed on it, constitute the left and right sides single-column arranged side by side establishing support of encorbelmenting.

17. the desk with lowering or hoisting gear according to claim 2; It is characterized in that: rear side is established a desk lamp, computer display establishing mounting bracket on top, lifting column third level post chamber; Mounting bracket is fixed on third level post chamber upper end rear side, also can be installed on the encorbelmenting of desktop load trailing arm third level post chamber rear side; The establishing support is overlooked and is V-arrangement; The V-arrangement of choosing is pitched a terminal side and is provided with Desk lamp support inserting column installing hole; Supply commercially available establishing desk lamp to peg graft, opposite side is provided with the display/panel bracket mounting socket, and the establishing support of two lifting column same table also can directly prolong encorbelmenting of both sides desktop load trailing arm third level post chamber rear side; And be provided with and jack be installed on it, constitute the left and right sides single-column arranged side by side establishing support of encorbelmenting.

18. the desk with lowering or hoisting gear according to claim 3; It is characterized in that: rear side is established a desk lamp, computer display establishing mounting bracket on top, lifting column third level post chamber; Mounting bracket is fixed on third level post chamber upper end rear side, also can be installed on the encorbelmenting of desktop load trailing arm third level post chamber rear side; The establishing support is overlooked and is V-arrangement; The V-arrangement of choosing is pitched a terminal side and is provided with Desk lamp support inserting column installing hole; Supply commercially available establishing desk lamp to peg graft, opposite side is provided with the display/panel bracket mounting socket, and the establishing support of two lifting column same table also can directly prolong encorbelmenting of both sides desktop load trailing arm third level post chamber rear side; And be provided with and jack be installed on it, constitute the left and right sides single-column arranged side by side establishing support of encorbelmenting.

19. the desk with lowering or hoisting gear according to claim 4; It is characterized in that: rear side is established a desk lamp, computer display establishing mounting bracket on top, lifting column third level post chamber; Mounting bracket is fixed on third level post chamber upper end rear side, also can be installed on the encorbelmenting of desktop load trailing arm third level post chamber rear side; The establishing support is overlooked and is V-arrangement; The V-arrangement of choosing is pitched a terminal side and is provided with Desk lamp support inserting column installing hole; Supply commercially available establishing desk lamp to peg graft, opposite side is provided with the display/panel bracket mounting socket, and the establishing support of two lifting column same table also can directly prolong encorbelmenting of both sides desktop load trailing arm third level post chamber rear side; And be provided with and jack be installed on it, constitute the left and right sides single-column arranged side by side establishing support of encorbelmenting.

20. the desk with lowering or hoisting gear according to claim 5; It is characterized in that: rear side is established a desk lamp, computer display establishing mounting bracket on top, lifting column third level post chamber; Mounting bracket is fixed on third level post chamber upper end rear side, also can be installed on the encorbelmenting of desktop load trailing arm third level post chamber rear side; The establishing support is overlooked and is V-arrangement; The V-arrangement of choosing is pitched a terminal side and is provided with Desk lamp support inserting column installing hole; Supply commercially available establishing desk lamp to peg graft, opposite side is provided with the display/panel bracket mounting socket, and the establishing support of two lifting column same table also can directly prolong encorbelmenting of both sides desktop load trailing arm third level post chamber rear side; And be provided with and jack be installed on it, constitute the left and right sides single-column arranged side by side establishing support of encorbelmenting.

21. the desk with lowering or hoisting gear according to claim 6; It is characterized in that: rear side is established a desk lamp, computer display establishing mounting bracket on top, lifting column third level post chamber; Mounting bracket is fixed on third level post chamber upper end rear side, also can be installed on the encorbelmenting of desktop load trailing arm third level post chamber rear side; The establishing support is overlooked and is V-arrangement; The V-arrangement of choosing is pitched a terminal side and is provided with Desk lamp support inserting column installing hole; Supply commercially available establishing desk lamp to peg graft, opposite side is provided with the display/panel bracket mounting socket, and the establishing support of two lifting column same table also can directly prolong encorbelmenting of both sides desktop load trailing arm third level post chamber rear side; And be provided with and jack be installed on it, constitute the left and right sides single-column arranged side by side establishing support of encorbelmenting.