CN111053368A

CN111053368A - Horizontal sliding desktop conference office table with parallel mechanism

Info

Publication number: CN111053368A
Application number: CN202010074339.1A
Authority: CN
Inventors: 张彤林; 王东升
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-01-22
Filing date: 2020-01-22
Publication date: 2020-04-24

Abstract

The invention discloses a horizontal sliding desktop conference office desk with a parallel mechanism, which comprises: the multifunctional office table comprises a detachable underframe, wherein slide rails are respectively installed at three top ends of the underframe, an office table top is horizontally arranged right above the underframe, the middle part of the lower surface of the office table top is connected with a table top rotating shaft through a boss, a horizontal installation seat which is coaxial with the table top rotating shaft is arranged outside the table top rotating shaft, the periphery of the horizontal installation seat is hinged with parallel stay bars, and the bottom ends of the parallel stay bars are hinged with side positioning tables which longitudinally slide along the slide rails; the horizontal installation seat, the parallel stay bar and the side positioning tables are mutually coupled to form a parallelogram parallel structure, the structure can realize the capability of keeping the horizontal installation seat at different positions of the three side positioning tables according to the four-bar mechanism principle in the mechanical principle, the horizontal position and the longitudinal height of the office table top can be changed by moving the longitudinal positions of the three side positioning tables, but the office table top can always keep the horizontal state based on the parallel mechanism.

Description

Horizontal sliding desktop conference office table with parallel mechanism

Technical Field

The invention relates to the technical field of office supplies, in particular to a horizontal sliding desktop conference office table with a parallel mechanism.

Background

The office table is a table which is equipped for working conveniently in daily life and work and social activities and is used for processing work or operation, people can see the office table in places such as offices, conference rooms, reading rooms, book and data rooms, training classrooms, teaching and research rooms, laboratories, worker dormitories and the like, however, the existing office table is complex in installation process, time and labor are wasted, the position of the table top of the office table is fixed, the traditional office table cannot conveniently lift the office table top, the working requirements and the height and the angle are not met sometimes, different people can not adapt to the inherent angle and height of the table top due to the height or vision, the desk is easy to feel uncomfortable after working for a long time, the use fatigue can be caused, in reality, the office table top is generally horizontally configured, but the table top is not flat due to various reasons or the table top is not stable in the moving process, the office table is easy to shake, normal use is affected, and the practicability of the device is poor.

An office (CN 201610416671.5) convenient for lifting an office desktop comprises the office desktop, a support rod, a first upright post, a transverse plate, rollers, a small driver, a telescopic rod, a long groove, a controller, a second upright post, a bulb and a projector, wherein the first upright post and the second upright post are arranged on one side below the office desktop, the small drivers are respectively arranged at the inner bottom ends of the first upright post and the second upright post, the small drivers are controlled by the controller, one end of the telescopic rod is connected onto the small drivers, the other end of the telescopic rod is connected with one end of the support rod, the other end of the support rod is fixedly connected with the office desktop, the transverse plates are arranged at the bottom ends of the first upright post and the second upright post, the two rollers are arranged at the bottom end of the transverse plates, the two upright posts are also arranged on the other side below the office desktop, the structure of the transverse plates is the same as that of the first upright, the use is very convenient. The utility model provides an office table (CN201610420067. X) convenient to installation includes desk desktop and desk cupboard, the one end of desk desktop is provided with the desk baffle, one side of desk baffle is provided with the first backup pad of desk, the opposite side of desk baffle is provided with desk second backup pad, the bottom surface of desk desktop is provided with transverse slide, the one end of the bottom surface of desk desktop is provided with vertical slide, the top of desk cupboard is provided with the slide gyro wheel, the bottom of desk cupboard is provided with the base, the bottom of base is provided with the telescopic link, the bottom of telescopic link is provided with universal pulley. The overall structure of the desk is realized by unfolding the desktop, the desk is convenient to mount and carry, the desk is simple and rapid, the cabinet below the desktop can be moved at any time according to habits or requirements, and the cabinet after being moved is equivalent to a third support plate, so that the desk is more stable. The utility model provides a novel desk (CN201910651080. X) includes the desk chassis, the upside of desk chassis is equipped with the desk desktop, fixedly connected with activity slide rail on the desk chassis, sliding connection has the bracing piece in the activity slide rail, the bracing piece is kept away from the one end and the desk desktop fixed connection of activity slide rail, through activity slide rail and bracing piece swing joint between desk chassis and the desk desktop, the activity slide rail includes movable slide rail shell body, the spout has all been dug to four walls of activity slide rail shell body, and the whole fretwork form that is of activity slide rail shell body, activity slide rail shell body fixedly connected with telescopic link, and the telescopic link is located the spout, can realize can be according to the people's height of difference, eyesight, the desktop angle is adjusted at will to the work custom, can alleviate work fatigue to a certain extent. An adjustable lifting office desk (CN 201710912667.2) comprises an office desk top, a desktop support column, a push-pull handle, a rectangular bottom plate, a storage drawer, universal moving wheels, a storage cabinet, adjustable supporting legs, a baffle plate and a keyboard placing device, the adjustable supporting leg consists of a supporting foot pad, an anti-skid block, a connecting rod and a connecting thread, the supporting foot pad is attached above the anti-skid block, the connecting thread is nested on the surface of the connecting rod, one end of the connecting rod is welded above the supporting foot pad, the other end of the connecting rod is connected below the rectangular bottom plate in a penetrating way through the connecting thread, the adjustable lifting of the office table is realized by installing the adjustable supporting foot, even the desk of adjustable lift uses on the bottom surface of unevenness when using, can make the desk can be fine when using fix through the height of adjusting each supporting legs, avoid taking place to rock, improve the device practicality. The utility model provides a rotation type desk (CN 201911052461.2) includes the desk, base and motor, the base includes rotating base and unable adjustment base, the rotating base middle part is equipped with the pivot, the unable adjustment base middle part is equipped with the installation cavity, the installation cavity is located in the pivot, the pivot can be at the installation cavity internal rotation, the rotating base lateral part is equipped with the motor mount pad, the motor is installed on the motor mount pad, the unable adjustment base outside is equipped with the hold-in range, the axis of rotation of motor is equipped with the gear, gear and hold-in range meshing, the rotating base top is equipped with the bottom plate, desk and bottom plate.

However, the movable and liftable office table in the prior art has the following disadvantages: (1) the lifting mechanism, the moving mechanism and the rotating mechanism depend on electric elements too much, and the structure of the office table in actual use is most suitable for adopting passive and mechanical mechanism reliability and controllability; (2) the application of the telescopic rod in the lifting mechanism is abused, and people know that the telescopic rod is not stable enough as a lifting mechanism, particularly a lifting component of an office table according to life experience; (3) how to always keep the level of the office table top in the processes of lifting, moving and rotating is not perfectly solved at present.

Disclosure of Invention

An object of the present invention is to solve at least the above problems and to provide at least the advantages described later.

The invention also aims to provide a horizontal sliding desktop conference office desk with a parallel mechanism, wherein a horizontal mounting seat, a parallel stay bar and side positioning tables are mutually coupled to form a parallelogram parallel structure, the structure can realize the capability of keeping the horizontal mounting seat horizontal at different positions of the three side positioning tables according to the four-bar mechanism principle in the mechanical principle, the horizontal position and the longitudinal height of the office desktop can be changed by moving the longitudinal positions of the three side positioning tables, but the office desktop can always keep the horizontal state based on the parallel mechanism, so as to solve the problems in the background technology.

To achieve these objects and other advantages in accordance with the purpose of the invention, a horizontal sliding desktop conference desk with a parallel mechanism is provided, the technical solution is as follows:

the detachable underframe is of a three-fork star-shaped structure, the center of the underframe is of a disc-shaped counterweight structure, slide rails with equal height are respectively and vertically arranged at the three top ends of the underframe, an office desktop is horizontally arranged right above the underframe, the axis of the office desktop is coincided with the axis of the underframe, the middle part of the lower surface of the office desktop is connected with a desktop rotating shaft through a boss, a horizontal mounting seat which is coaxial with the desktop rotating shaft is arranged outside the desktop rotating shaft, a self-locking mechanism which is matched with the desktop rotating shaft is arranged below the horizontal mounting seat, the periphery of the horizontal mounting seat is hinged with parallel support rods, side positioning tables which longitudinally slide along the slide rails are hinged at the bottom ends of the parallel support rods, the horizontal mounting seat, the parallel support rods and the side positioning tables are mutually coupled to form a parallelogram parallel structure, and the parallelogram parallel structure can be known according to, the structure can realize the capability that the horizontal mounting seat still keeps horizontal when the three side positioning tables are at different positions;

the self-locking mechanism comprises a tray, supporting rods, a cantilever damping pendulum, a central shaft, a self-locking platform and an internal thread column, wherein the tray is horizontally arranged right below the desktop rotating shaft and coaxial with the desktop rotating shaft, a plurality of the supporting rods are uniformly and vertically arranged around the tray, the tray is installed on a horizontal installation seat through the supporting rods, the lower part of the self-locking platform is of a cylindrical structure, the upper part of the self-locking platform is a spiral tangent plane, the top end of the central shaft is fixedly connected with the desktop rotating shaft, the lower part of the central shaft is provided with external threads, the bottom surface of the internal thread column is installed on the upper surface of the tray, the upper part of the internal thread column is in threaded fit connection with the lower part of the central shaft, one end of the cantilever damping pendulum is fixedly connected to the central shaft, and the other end;

many spouts have been seted up to the inboard of side location platform, the locating hole that runs through has been seted up at the top center and the bottom center of side location platform, a plurality of outer locating holes have evenly been seted up to the lateral surface of side location platform, three top middle part of chassis is provided with the reference column such as with the slide rail height respectively perpendicularly, and the reference column passes locating hole and reference column and locating hole and passes through geometric fit through locating hole in the installation, the middle part both sides of side location platform set up the arris platform, and the side location platform sets up the hinge through the arris platform and articulates with parallel stay bar's top, spout surface and slide rail surface all are equipped with the damping layer for increase the resistance of side location platform along the spout surface.

Preferably, the horizontal mounting base is of a hexagonal frustum pyramid structure, two adjacent parallel support rods are taken as a group, the parallel support rods are divided into 3 groups and uniformly distributed on the hexagonal frustum pyramid outer edge of the horizontal mounting base, six groups of frustum pyramids are uniformly distributed on the periphery of the horizontal mounting base, and the horizontal mounting base is hinged to the top ends of the parallel support rods through a hinge arranged on the frustum pyramids.

Preferably, the hinge arranged between the horizontal installation seat and the parallel stay bar is a spherical hinge or a circular hinge, and the type of the hinge arranged between the side positioning table and the parallel stay bar is consistent with that of the hinge arranged between the horizontal installation seat and the parallel stay bar.

Preferably, the cross section of the parallel stay bar is in a circular or polygonal prism shape, internal thread holes are respectively formed in two ends of the parallel stay bar, and the two ends of the parallel stay bar are connected with the hinge through threads to fix relative positions.

Preferably, a thrust bearing or a deep groove ball bearing is arranged between the desktop rotating shaft and the horizontal mounting seat.

Preferably, the rotation direction of the external thread at the lower part of the middle shaft is consistent with that of the internal thread at the upper part of the internal thread column, the rotation direction of the external thread at the lower part of the middle shaft is opposite to that of the spiral tangent plane of the self-locking platform, and the spiral tangent plane of the self-locking platform, the external thread at the lower part of the middle shaft and the internal thread at the upper part of the internal thread column do not exceed 360 degrees.

Preferably, the outer positioning hole is a unthreaded hole, and under the condition of lacking the chassis, the side positioning table can be fixed through the unthreaded hole on the outer positioning hole, so that the application range of the conference desk is expanded, and the advantages that a common desk cannot have in the aspects of heightening installation and side installation can be exerted.

Preferably, the outer positioning hole is a threaded hole, and under the condition that an external positioning device is inconvenient to provide due to lack of a bottom frame, the extreme application range of the conference office table can be expanded by additionally arranging a screw in the threaded hole and screwing the position of the fixed side positioning table.

Preferably, the spout is asymmetric structure, and sets up many slides in the spout, has increased the area of contact between slide rail and the spout, strengthens the effect on damping layer in order to increase overall stability.

Preferably, the parallel struts are rigid rods.

The invention at least comprises the following beneficial effects:

1. the horizontal mounting seat, the parallel stay bars and the side positioning tables are mutually coupled to form a parallelogram parallel structure, and the structure can realize the capability of keeping the horizontal mounting seat at different positions of the three side positioning tables according to the four-bar mechanism principle in the mechanical principle;

2. if the office desktop needs to be rotated in one direction, the external thread at the lower part of the middle shaft and the internal thread at the upper part of the internal thread column are matched and rotated outwards until idling, the lower part of the cantilever damping pendulum turning spiral surface is separated from the contact with the spiral section, the desktop can freely rotate according to any angle, if the office desktop needs to be locked, the external thread at the lower part of the middle shaft and the internal thread at the upper part of the internal thread column are matched and rotated inwards until screwing, the upper part of the cantilever damping pendulum turning spiral section is tightly contacted with the spiral section until relative movement cannot be realized, and the desktop can be stably applied;

3. damping layers are arranged on the surfaces of the sliding grooves and the surfaces of the sliding rails and used for increasing the resistance of the side positioning tables along the surfaces of the sliding grooves, the sliding grooves are of an asymmetric structure, a plurality of sliding ways are arranged in the sliding grooves, the contact area between the sliding rails and the sliding grooves is increased, the effect of the damping layers is enhanced to increase the overall stability, the horizontal position and the longitudinal height of the office table top can be changed by moving the longitudinal positions of the three side positioning tables, and the office table top can be always kept in a horizontal state when the office table top is used based on a parallel mechanism;

4. can greatly expand the range of application of conference desk through outer locating hole, can increase the installation, the unable advantage that possesses of ordinary desk of the aspect of side position installation performance, the also direct contact ground of side location platform, only need guarantee this moment that the three region on side location platform contact ground keeps the level, can guarantee that the level of desktop is placed, the in-service use of being convenient for.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

FIG. 1 is a front view of the present invention;

FIG. 2 is a left side view of the present invention;

FIG. 3 is a top side view of the present invention;

FIG. 4 is a lower side view of the present invention;

FIG. 5 is a cross-sectional top view of the present invention;

FIG. 6 is a partial view of the self-locking mechanism;

FIG. 7 is a partial cross-sectional view of the self-locking mechanism;

FIG. 8 is a schematic structural diagram of a side positioning table.

In the figure: 1. a chassis; 2. a slide rail; 3. an office desktop; 4. a desktop rotating shaft; 5. a horizontal mounting base; 6. a self-locking mechanism; 7. parallel stay bars; 8. a side positioning table; 9. a tray; 10. a strut; 11. a cantilever damping pendulum; 12. a middle shaft; 13. a self-locking table; 14. an internally threaded post; 15. a chute; 16. positioning the through hole; 17. an outer positioning hole; 18. and a positioning column.

Detailed Description

The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.

It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.

According to the drawings of fig. 1-8, the invention provides a horizontal sliding desktop conference desk with a parallel mechanism, which adopts the following technical scheme:

example 1

The detachable underframe 1 is of a three-fork star structure at the bottom, the stability of the triangle structure is high, the center of the underframe 1 is of a disc-shaped counterweight structure, the underframe 1 can be mutually detached and assembled in the same type when in use without one-to-one correspondence, the transportability and the assembly convenience of a conference office table are improved, slide rails 2 with equal height are respectively and vertically arranged at the three top ends of the underframe 1, an office table top 3 is horizontally arranged right above the underframe 1, the axis of the office table top 3 is superposed with the axis of the underframe 1, the middle part of the lower surface of the office table top 3 is connected with a table top rotating shaft 4 through a boss, the table top rotating shaft 4 and the office table top 3 rotate integrally, a horizontal mounting seat 5 which is coaxial with the table top rotating shaft 4 is arranged outside the table top rotating shaft 4, the horizontal mounting seat 5 is of a bearing structure, a thrust bearing or a, the horizontal installation seat 5 is of a hexagonal frustum pyramid structure, the self-locking mechanism 6 matched with the desktop rotating shaft 4 is installed below the horizontal installation seat 5, when the desktop is required to rotate in one direction in the use process, the desktop can rotate in the opposite direction, the self-locking mechanism 6 plays a role in locking the desktop, meanwhile, the overall stability is improved, the periphery of the horizontal installation seat 5 is hinged with the parallel support rods 7, the parallel support rods 7 are rigid rods, the two adjacent parallel support rods 7 are taken as a group, the parallel support rods 7 are divided into 3 groups which are uniformly distributed at the hexagonal frustum pyramid outer edge of the horizontal installation seat 5, six groups of frustum pyramids are uniformly distributed at the periphery of the horizontal installation seat 5, the horizontal installation seat 5 is hinged with the top ends of the parallel support rods 7 through a frustum pyramid arrangement hinge, the frustum pyramids are arranged to prevent the horizontal support rods from rubbing with the horizontal installation seat 5 and the side positioning platforms 8 to influence the use effect, the hinge arranged between the horizontal installation seat 5 and the parallel support rods 7 is a spherical hinge or a circular hinge, the two types of hinges can achieve corresponding purposes, the bottom ends of the parallel support rods 7 are hinged with side positioning tables 8 which longitudinally slide along the slide rails 2, and the types of the hinges arranged between the side positioning tables 8 and the parallel support rods 7 are consistent with the types of the hinges between the horizontal mounting seats 5 and the parallel support rods 7; the cross section of the parallel stay bar 7 is in a circular or polygonal prism shape, internal thread holes are respectively formed in two ends of the parallel stay bar 7, and the two ends of the parallel stay bar 7 are connected with the hinge through threads to fix relative positions; the horizontal installation base 5, the parallel stay bars 7 and the side positioning tables 8 are mutually coupled to form a parallelogram parallel structure, and according to the four-bar mechanism principle in the mechanical principle, the structure can realize the capability that the horizontal installation base 5 still keeps horizontal at different positions of the three side positioning tables 8;

the self-locking mechanism 6 comprises a tray 9, supporting rods 10, a cantilever damping pendulum 11, a middle shaft 12, a self-locking platform 13 and an internal threaded column 14, wherein the tray 9 is horizontally arranged right below the desktop rotating shaft 4 and coaxial with the desktop rotating shaft 4, a plurality of supporting rods 10 are uniformly and vertically arranged around the tray 9, the tray 9 is installed on the horizontal installation seat 5 through the supporting rods 10, the lower part of the self-locking platform 13 is of a cylindrical structure, the upper part of the self-locking platform 13 is a spiral tangent plane, the top end of the middle shaft 12 is fixedly connected with the desktop rotating shaft 4, the lower part of the middle shaft 12 is provided with external threads, the bottom surface of the internal threaded column 14 is installed on the upper surface of the tray 9, the upper part of the internal threaded column 14 is in threaded fit connection with the lower part of the middle shaft 12, the rotation direction of the external threads at the lower part of the middle shaft 12 is consistent with the rotation direction, The external thread at the lower part of the middle shaft 12 and the internal thread at the upper part of the internal thread column 14 do not exceed 360 degrees, if the office table top 3 is to be rotated, the office table top is rotated along one direction, when the table top rotating shaft 4 and the middle shaft 12 are rotated, the external thread at the lower part of the middle shaft 12 and the internal thread at the upper part of the internal thread column 14 are matched and rotated outwards until idling, one end of the cantilever damping pendulum 11 is fixedly connected to the middle shaft 12, the other end of the cantilever damping pendulum 11 is arranged right above the spiral section of the self-locking platform 13, the lower part of the cantilever damping pendulum 11, which turns to the spiral section, is separated from contact with the spiral section, the table top can freely rotate according to any angle, if the office table top 3 is to be locked, the office table top rotates along the opposite direction, when the table top rotating shaft 4 and the middle shaft 12 are rotated, the external thread at the lower, the desktop can be stably applied;

the inner side of the side positioning table 8 is provided with a plurality of sliding grooves 15, the top center and the bottom center of the side positioning table 8 are provided with through positioning through holes 16, the outer side surface of the side positioning table 8 is uniformly provided with a plurality of outer positioning holes 17, the middle parts of the three top ends of the underframe 1 are respectively vertically provided with positioning columns 18 with the same height as the sliding rails 2, in the installation process, the positioning columns 18 penetrate through the positioning through holes 16 and the positioning columns 18 are in geometric fit with the positioning through holes 16, the two sides of the middle part of the side positioning table 8 are provided with prismatic tables, the side positioning table 8 is hinged with the top ends of the parallel stay bars 7 through prismatic table hinge joints, the surfaces of the sliding grooves 15 and the surfaces of the sliding rails 2 are both provided with damping layers for increasing the resistance of the side positioning table 8 along the surfaces of the sliding grooves 15, the sliding grooves 15 are of asymmetric structures, a plurality of sliding rails are arranged, by moving the longitudinal position of the three side positioning tables 8, the horizontal position and the longitudinal height of the office table top 3 can be changed, but the office table top 3 is always kept in the horizontal state based on the use of the parallel mechanism.

Example 2

The specific use method is the same as that of the embodiment 1, the outer positioning holes 17 are light holes under the condition that the chassis 1 fails or the chassis 1 cannot be found, and the side positioning table 8 can be fixed through the light holes in the outer positioning holes 17 under the condition that the chassis 1 is absent, so that the application range of the conference desk is expanded, and the advantages which cannot be achieved by a common desk in the aspects of heightening installation and side installation can be achieved.

Example 3

The specific use method is the same as that of the embodiment 1, the outer positioning hole 17 is a threaded hole under the condition that the chassis 1 fails or the chassis 1 cannot be found, and under the condition that an external positioning device is inconvenient to provide due to the lack of the chassis 1, the position of the fixed side positioning table 8 can be screwed by additionally installing a screw in the threaded hole, so that the extreme application range of the conference desk is expanded.

Example 4

The specific use method is the same as that of the embodiment 1, and aiming at the condition that the bottom frame 1 is in failure or the bottom frame 1 cannot be found, the side positioning table 8 directly contacts the ground, and at the moment, the horizontal placement of the desktop can be ensured only by ensuring that three areas of the side positioning table 8 contacting the ground are kept horizontal, so that the practical use is facilitated.

While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.

Claims

1. The utility model provides a take parallel mechanism's horizontal desktop conference desk that slides which characterized in that includes:

detachable chassis (1), its bottom surface is trident star structure, the center of chassis (1) is disc counter weight structure, equal-height slide rail (2) are installed perpendicularly respectively to the three top of chassis (1), the level is provided with office table top (3) directly over chassis (1), and the axle center of office table top (3) and the axle center coincidence of chassis (1), the lower surface middle part of office table top (3) is connected with desktop pivot (4) through the boss, desktop pivot (4) are equipped with horizontal installation seat (5) with the axle center with desktop pivot (4) outward, self-locking mechanism (6) with desktop pivot (4) complex are installed to the below of horizontal installation seat (5), articulate between the parallel vaulting pole (7) around horizontal installation seat (5), the bottom of parallel vaulting pole (7) articulates there is side location platform (8) along slide rail (2) longitudinal sliding, the horizontal mounting seat (5), the parallel stay bars (7) and the side positioning tables (8) are mutually coupled to form a parallelogram parallel structure, and the structure can realize the capability of keeping the horizontal mounting seat (5) horizontal at different positions of the three side positioning tables (8) according to the four-bar mechanism principle in the mechanical principle;

the self-locking mechanism (6) comprises a tray (9), support rods (10), a cantilever damping pendulum (11), a middle shaft (12), a self-locking platform (13) and an internal threaded column (14), wherein the tray (9) is horizontally arranged under the desktop rotating shaft (4) and coaxial with the desktop rotating shaft (4), a plurality of support rods (10) are uniformly and vertically arranged around the tray (9), the tray (9) is installed on the horizontal installation seat (5) through the support rods (10), the lower part of the self-locking platform (13) is of a cylindrical structure, the upper part of the self-locking platform (13) is a spiral tangent plane, the top end of the middle shaft (12) is fixedly connected with the desktop rotating shaft (4), the lower part of the middle shaft (12) is provided with external threads, the bottom surface of the internal threaded column (14) is installed on the upper surface of the tray (9), the upper part of the internal threaded column (14) is in threaded fit connection with the lower part of the middle shaft (12), one end of the cantilever damping pendulum (11) is fixedly connected to the middle shaft (12), and the other end of the cantilever damping pendulum (11) is arranged right above the spiral section of the self-locking platform (13);

a plurality of sliding grooves (15) are arranged on the inner side of the side positioning table (8), a through positioning through hole (16) is arranged at the top center and the bottom center of the side positioning table (8), a plurality of outer positioning holes (17) are uniformly arranged on the outer side surface of the side positioning table (8), the middle parts of the three top ends of the bottom frame (1) are respectively and vertically provided with positioning columns (18) with the same height as the sliding rails (2), in the installation process, the positioning column (18) passes through the positioning through hole (16), the positioning column (18) is in geometric fit with the positioning through hole (16), the two sides of the middle part of the side positioning table (8) are provided with prismatic tables, the side positioning table (8) is hinged with the top ends of the parallel stay bars (7) through hinges arranged on the prismatic tables, damping layers are arranged on the surfaces of the sliding grooves (15) and the surfaces of the sliding rails (2), for increasing the resistance of the side positioning table (8) along the surface of the chute (15).

2. The horizontal sliding desktop conference desk with the parallel mechanism as claimed in claim 1, wherein: horizontal installation seat (5) are six prismoid structures, and two are adjacent parallel vaulting pole (7) are as a set of, and parallel vaulting pole (7) divide 3 groups evenly distributed altogether the six prismoid outer fringe of horizontal installation seat (5), the six prismoid of evenly distributed all around of horizontal installation seat (5), horizontal installation seat (5) set up the top hinge of hinge and parallel vaulting pole (7) through the prismoid and articulate.

3. The horizontal sliding desktop conference desk with the parallel mechanism as claimed in claim 1, wherein: the hinge that sets up between horizontal mount pad (5) and parallel vaulting pole (7) is spherical hinge or circular hinge, the hinge type that sets up between side location platform (8) and parallel vaulting pole (7) keeps unanimous with the hinge type between horizontal mount pad (5) and parallel vaulting pole (7).

4. The horizontal sliding desktop conference desk with the parallel mechanism as claimed in claim 1, wherein: the cross section of the parallel stay bar (7) is in a circular or polygonal prism shape, internal thread holes are respectively formed in two ends of the parallel stay bar (7), and the two ends of the parallel stay bar (7) are connected with the hinge through threads to fix the relative positions.

5. The horizontal sliding desktop conference desk with the parallel mechanism as claimed in claim 1, wherein: and a thrust bearing or a deep groove ball bearing is arranged between the desktop rotating shaft (4) and the horizontal mounting seat (5).

6. The horizontal sliding desktop conference desk with the parallel mechanism as claimed in claim 1, wherein: the screw direction of the external thread at the lower part of the middle shaft (12) is consistent with that of the internal thread at the upper part of the internal thread column (14), the screw direction of the external thread at the lower part of the middle shaft (12) is opposite to that of the screw tangent plane of the self-locking platform (13), and the screw tangent plane of the self-locking platform (13), the external thread at the lower part of the middle shaft (12) and the internal thread at the upper part of the internal thread column (14) do not exceed 360 degrees.

7. The horizontal sliding desktop conference desk with the parallel mechanism as claimed in claim 1, wherein: the outer positioning holes (17) are unthreaded holes, and under the condition that the underframe (1) is absent, the side positioning table (8) can be fixed through the unthreaded holes in the outer positioning holes (17), so that the application range of the conference desk is expanded, and the advantages that a common desk cannot have in the aspects of heightening and side-position installation can be exerted.

8. The horizontal sliding desktop conference desk with the parallel mechanism as claimed in claim 1, wherein: the outer positioning holes (17) are threaded holes, and under the condition that an external positioning device is inconvenient to provide due to lack of the underframe (1), the positions of the fixed side positioning tables (8) can be screwed up by additionally installing screws in the threaded holes, so that the extreme application range of the conference desk is expanded.

9. The horizontal sliding desktop conference desk with the parallel mechanism as claimed in claim 1, wherein: spout (15) are asymmetric structure, and set up many slides in spout (15), have increased the area of contact between slide rail (2) and spout (15), strengthen the effect on damping layer in order to increase overall stability.

10. The horizontal sliding desktop conference desk with the parallel mechanism as claimed in claim 1, wherein: the parallel stay bars (7) are rigid bars.