CN112590843A - Electric reversing seat - Google Patents

Abstract

The invention discloses an electric reversing seat, comprising: the side wall of the base is connected with a decorative plate; the linear guide rail is connected to the top of the base; the first supporting piece is connected to the base and arranged between the linear guide rails; the second supporting piece is connected to the first sliding block on the linear guide rail and is arranged at intervals with the base and the first supporting piece; a third support member contacting the second support member; a table-chair surface connected to the third supporting member; the driving swing arm assembly is connected to the base, is connected with the first support piece, the second support piece and the third support piece, drives the swing arm assembly to act, rotates by taking the first support piece as a rotation center, pushes the second support piece, the third support piece and the table and chair surface to move along the linear guide rail, and links the third support piece and the table and chair surface to rotate by taking the second support piece as a rotation center; the technical problems that the arrangement of the seat is fixed, the seat can not be flexibly adjusted according to different flow rates of people, and the use flexibility is poor are solved.

Description

Electric reversing seat

Technical Field

The invention relates to the technical field of railway traffic facilities, in particular to an electric reversing seat.

Background

In recent years, governments have made great support for the railway industry, domestic railways become the most in the world, along with the rapid development of railway traffic and the advancement of urbanization, no matter whether high-speed railways, subways or inter-city trains are developed towards rapidness, intellectualization and humanization, more and more people are willing to select rail traffic as a travel tool, wherein seats are necessary facilities on high-speed railways, subways or inter-city trains, the current seats are fixedly arranged, cannot be flexibly adjusted according to the difference of the flow of people, and are poor in use flexibility.

Disclosure of Invention

Aiming at the defects in the prior art, the purpose is to provide the electric reversing seat, so as to solve the technical problems that the arrangement of the seat in the prior art is fixed, the seat can not be flexibly adjusted according to different flow rates of people, and the use flexibility is poor.

The technical scheme for realizing the purpose is as follows: an electrically commutated seat, comprising:

the top of the base is formed into a frame supporting structure after the base is combined, and after the decorative plate is connected to the side wall of the base, the interior of the base is of a hollow structure;

the two linear guide rails are symmetrically connected to the top of the base;

the first supporting piece is connected to the base and arranged between the linear guide rails;

the second supporting piece is connected to the first sliding block on the linear guide rail and is arranged at intervals with the base and the first supporting piece;

a third support member, a lower surface of which is in contact with an upper surface of the second support member;

the bottom of the desk chair surface is connected with the third supporting piece;

and the driving swing arm assembly is connected to the base and is connected with the first support piece, the second support piece and the third support piece, and the driving swing arm assembly acts to push the second support piece, the third support piece and the table seat surface to move along the linear guide rail by taking the first support piece as a rotation center for rotating an angle, and is linked with the third support piece and the table seat surface by taking the second support piece as a rotation center for rotating an angle.

Further: the base includes: four support columns; and a first support frame connected to the top of the support column.

Further: the decorative panel includes: three side wall plates connected to the support columns and the side walls of the first support frame; and two bottom liners, one of the bottom liners is connected to the bottoms of the two support columns.

Further: further comprising: and the first baffle is connected to the first support frame and is arranged at intervals with the first support piece.

Further: the second support member includes: a second support frame; the two first connecting plates are symmetrically arranged on the second supporting frame and are used for being connected with the first sliding blocks on the linear guide rail; the supporting block is connected to the middle part of the second supporting frame, arranged on one side of the first connecting plate and used for connecting the first sliding block and the driving swing arm assembly; four first slides connected on top of the second support frame in direct contact with the third support; and the two second baffles are symmetrically connected to the side wall of the second supporting frame and respectively block one side of the linear guide rail.

Further: the third support member includes: the third supporting frame is connected with the table and the chair surface; the fourth supporting frame is connected to the middle part of the third supporting frame, is inserted with the driving swing arm assembly and is rotated by the driving swing arm assembly in a linkage manner; and two second sliding bars connected to the third support frame and in direct contact with the first sliding bars.

Further: the driving swing arm assembly includes: one end of the electric push rod is connected to the base and arranged in the hollow structure; the lower end of the driving shaft assembly is connected with the other end of the electric push rod, and the upper end of the driving shaft assembly is connected with the first supporting piece and is linked and rotated by the electric push rod; one end of the first swing arm is connected with the upper end of the driving shaft assembly and is arranged between the first supporting piece and the second supporting piece; one end of the second swing arm is movably connected with the other end of the first swing arm and is arranged between the first supporting piece and the second supporting piece; the driven shaft assembly is connected to the second supporting piece, the lower end of the driven shaft assembly is connected with the second swing arm, and the upper end of the driven shaft assembly penetrates out of the second supporting piece; the rotary disc is connected to the upper end of the driven shaft assembly and arranged between the second supporting piece and the third supporting piece, four convex pins are arranged on the rotary disc, and the convex pins are inserted with the third supporting piece; the two travel switches are connected to the bottom of the first supporting piece at intervals through a bending piece and are used for being matched with the driving shaft assembly; and the two limiting blocks are connected to the top of the first supporting piece at intervals and used for limiting the rotating angle of the first swing arm.

Further: the driving shaft assembly includes: the upper end of the driving shaft is connected with the first swing arm; the first bearing is connected to the first supporting piece and used for connecting and limiting the driving shaft; the two second connecting plates are connected to the lower end of the driving shaft and are used for being connected with the electric push rod through a pin shaft; and the first pressure plate is connected to the top of the driving shaft and used for limiting the first swing arm.

Further: the driven shaft assembly includes: the lower end of the driven shaft is connected with the second swing arm; the second bearing is connected to the second supporting piece and used for connecting and limiting the driven shaft; the first base plate is sleeved on the driven shaft and is in contact with the second swing arm; and the second pressure plate is connected to the driven shaft and limits the second swing arm.

Further: further comprising: and one end of the manual unlocking handle penetrates into the decorative plate and is connected with the driving swing arm assembly in an inserting mode to link the driving swing arm assembly to act, and the other end of the manual unlocking handle protrudes out of the decorative plate.

By adopting the technical scheme, the method has the following beneficial effects: compared with the prior art, the electrically-commutated seat is provided with the base, and the decorative plate is connected to the side wall of the base, so that a stable supporting structure is formed; the base is connected with a linear guide rail, a first supporting piece and a driving swing arm assembly, a first sliding block on the linear guide rail is connected with a second supporting piece, the driving swing arm assembly is connected with the first supporting piece and the second supporting piece, the driving swing arm assembly is connected with a third supporting piece, and the third supporting piece is connected with a table and chair surface; when the table and chair combined device is used, the swing arm assembly is driven to act, the first support piece is taken as a rotation center to rotate, the second support piece, the third support piece and the table and chair surface are pushed to move along the linear guide rail, and the third support piece and the table and chair surface are linked to rotate by taking the second support piece as a rotation center, so that the purpose of adjusting the angle and the position of the table and chair surface is realized, and the flexibility of use is relatively good; thereby overcome the arrangement of seat fixed, can not carry out nimble adjustment according to the difference of flow of people, used the relatively poor technical problem of flexibility, reached the angle that can adjust the seat, used the better technological effect of flexibility, be favorable to using widely.

Drawings

FIG. 1 is a schematic view of a three-dimensional final assembly structure;

FIG. 2 is a schematic view of a three-dimensional assembly of the third support member and the table and chair surface of FIG. 1 after rotation;

FIG. 3 is an exploded view of FIG. 1;

FIG. 4 is a schematic three-dimensional view of the second support member and the partial drive swing arm assembly in combination;

FIG. 5 is a front view of FIG. 4;

FIG. 6 is a partial cross-sectional view of FIG. 5 with the addition of a first support;

FIG. 7 is a schematic three-dimensional structure of a third support member;

FIG. 8 is a partial three-dimensional structural view of the drive swing arm assembly;

FIG. 9 is one of three-dimensional structural diagrams of the first supporting frame, the linear guide rail, the first supporting member, the first baffle, the bending member and the limiting block;

fig. 10 is a second schematic three-dimensional structure diagram of the first support frame, the linear guide rail, the first support member, the first baffle, the bending member and the limiting block;

FIG. 11 is a schematic view of a three-dimensional structure of a combination of a manual unlocking handle and an electric push rod;

FIG. 12 is a schematic view of the three-dimensional structure of FIG. 1 in sequential order;

FIG. 13 is a schematic view of the three-dimensional structure of FIG. 2 in sequential order;

in the figure: 10. the base, 11, a support column, 12, a first support frame, 20, a decorative plate, 21, a side wall plate, 22, a bottom lining plate, 30, a linear guide rail, 40, a first support piece, 50, a second support piece, 51, a second support frame, 52, a first connecting plate, 53, a support block, 54, a first sliding strip, 55, a second baffle, 60, a third support piece, 61, a third support frame, 62, a fourth support frame, 63, a second sliding strip, 70, a table chair surface, 80, a driving swing arm assembly, 81, an electric push rod, 82, a driving shaft assembly, 821, a driving shaft, 822, a first bearing, 823, a second connecting plate, 824, a first pressure plate, 83, a first swing arm, 84, a second swing arm, 85, a driven shaft assembly, 851, a driven shaft 852, a second bearing, 853, a first cushion plate, 854, a second pressure plate, 86, a rotary table, 861, a convex pin, 87, a stroke switch, 88 and a bending piece, 89. the limiting block 90, the first baffle 100, and the manual unlocking handle.

Detailed Description

In order that the matter may be more readily and clearly understood, further details are set forth in the following description, taken in conjunction with the accompanying drawings, in which like reference numerals refer to like parts;

the utility model provides an electronic switching-over seat, it is fixed to have solved arranging of the seat among the correlation technique, can not carry out nimble adjustment according to the difference of flow of people, uses the relatively poor technical problem of flexibility, has reached the angle that can adjust the seat, uses the better positive effect of flexibility, and the overall thinking is as follows:

one embodiment is as follows:

as shown in fig. 1, 2, 3, 12, 13; an electrically commutated seat, comprising:

the top of the base 10 forms a frame supporting structure after being combined, and after the decorative plate 20 is connected to the side wall of the base 10, the interior of the base 10 is a hollow structure;

two linear guide rails 30 symmetrically connected to the top of the base 10;

a first support member 40 connected to the base 10 and disposed between the linear guides 30;

a second supporting member 50 connected to the first slider on the linear guide 30 and spaced apart from the base 10 and the first supporting member 40;

a third supporter 60 having a lower surface contacting the upper surface of the second supporter 50;

a table-seat surface 70, the bottom of which is connected to the third supporting member 60;

and a driving swing arm assembly 80 connected to the base 10 and connected to the first support 40, the second support 50 and the third support 60, wherein the driving swing arm assembly 80 operates to rotate around the first support 40, push the second support 50, the third support 60 and the table top 70 to move along the linear guide 30, and link the third support 60 and the table top 70 by rotating around the second support 50;

specifically, when the structure is implemented, the base 10 is provided, and the decorative plate 20 is connected to the side wall of the base 10, so that a stable supporting structure is formed; the base 10 is connected with the linear guide rail 30, the first support 40 and the driving swing arm assembly 80, the first slider on the linear guide rail 30 is connected with the second support 50, the driving swing arm assembly 80 is connected with the first support 40 and the second support 50, the driving swing arm assembly 80 is connected with the third support 60, and the third support 60 is connected with the table-chair surface 70; when the table and chair assembly device is used, the swing arm assembly 80 is driven to move, the first support piece 40 is taken as a rotation center to rotate, the second support piece 50, the third support piece 60 and the table and chair surface 70 are pushed to move along the linear guide rail 30, and the third support piece 60 and the table and chair surface 70 are linked to rotate by taking the second support piece 50 as a rotation center, so that the purpose of adjusting the angle and the position of the table and chair surface 70 is realized, and the flexibility of use is relatively good;

in another embodiment:

as shown in fig. 1, 2, 3, 9, 10, 12, 13; in practice, the base 10 comprises: four support columns 11; and a first supporting frame 12 connected to the top of the supporting column 11; the support column 11 is a hollow square tube; the first supporting frame 12 is formed by assembling and welding four hollow square tubes to form a square frame structure, and a reliable supporting structure is formed after the first supporting frame is welded with the supporting columns 11;

the decorative panel 20 includes: three side wall plates 21 connected to the support columns 11 and the side walls of the first support frame 12; and two bottom liners 22, one said bottom liner 22 being attached to the bottom of two said support columns 11; the side wall plate 21 is formed by bending a plate and is connected with the side wall of the support column 11 and the first support frame 12 through a countersunk screw; the bottom lining plate 22 is a cuboid plate and is connected with the supporting column 11 by welding or penetrating a countersunk head screw; the decorative plate 20 is relatively beautiful after being combined with the base 10, and forms a hollow structure for arranging an electric control box, a circuit and the like, thereby fully utilizing the space;

in another embodiment:

as shown in fig. 1, 2, 3, 9, 10, 12, 13; in implementation, the linear guide rails 30 are common structures in the prior art, and each linear guide rail 30 is provided with two first sliding blocks, so that a support can be well formed, a linear guide effect is also formed, the second support piece 50, the third support piece 60 and the table seat 70 can move linearly, and the purpose of adjusting the position of the table seat 70 is achieved;

in another embodiment:

as shown in fig. 1, fig. 2, fig. 3, fig. 6, fig. 9, fig. 10, fig. 12, fig. 13; in implementation, the first supporting member 40 is a rectangular hollow flat tube, and is welded with the first supporting frame 12, and the first supporting member 40 has a first through hole for tightly fitting with the first bearing 822, so that the driving swing arm assembly 80 can be reliably supported and connected;

in another embodiment:

as shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 12, fig. 13; in practice, the second support 50 comprises: a second support frame 51; two first connecting plates 52 symmetrically arranged on the second supporting frame 51 and used for connecting with the first sliding blocks on the linear guide 30; a support block 53 connected to the middle of the second support frame 51, disposed at one side of the first connection plate 52, for connecting the first slider and the driving swing arm assembly 80; four first slides 54, connected on top of said second support frame 51, in direct contact with said third supports 60; two second baffles 55 symmetrically connected to the sidewalls of the second support frame 51 to block one side of the linear guide 30;

the second supporting frame 51 is formed by assembling and welding four hollow square tubes to form a square frame structure; the first connecting plate 52 is a rectangular plate, is welded with the second supporting frame 51, and is used for being connected with the first sliding block through a countersunk screw, so that the mounting and dismounting are convenient; the supporting block 53 is a rectangular hollow flat pipe, is welded with the second supporting frame 51, is used for being connected with the first sliding block through a sunk screw, and is provided with a second through hole which is used for being tightly matched with the second bearing 852 and can be reliably supported, connected and driven to drive the swing arm assembly 80; the first sliding strip 54 is connected to the top of the second supporting frame 51 through a countersunk screw, the combined shape is approximately an octagonal structure, the first sliding strip is in direct contact with the second sliding strip 63 to generate sliding friction, the contact surface of the first sliding strip and the second sliding strip has high smoothness, generally 0.8 smoothness is selected, the friction resistance is relatively small, the normal rotation of the third supporting piece 60 cannot be influenced, and after the first sliding strip 54 or the second sliding strip 63 is partially worn, only the first sliding strip 54 or the second sliding strip 63 needs to be replaced, so that the replacement cost is relatively low; the second baffle 55 is formed by bending a plate, is connected with the second support frame 51 through a countersunk screw, blocks one side of the linear guide rail 30, protects the linear guide rail 30 and is relatively beautiful;

in another embodiment:

as shown in fig. 1, 2, 3, 7, 12, 13; in practice, the third support 60 comprises: a third supporting frame 61 connected to the table-seating surface 70; a fourth support frame 62 connected to the middle of the third support frame 61, inserted into the driving swing arm assembly 80, and rotated by the driving swing arm assembly 80; and two second runners 63 connected to said third support frame 61, in direct contact with said first runners 54; the third supporting frame 61 is formed by assembling and welding four hollow square tubes to form a square frame structure, has a large contact area with the table and chair surface 70, and can well support the table and chair surface 70; the fourth supporting frame 62 is assembled and welded by four hollow square pipes to form a # -shaped structure, and then is welded with the third supporting frame 61, and four third through holes are reserved on the fourth supporting frame 62 and are respectively inserted with the convex pins 861, so that the swing arm assembly 80 is driven to be linked with the third supporting piece 60 to rotate; the second slide bar 63 is long and connected with the third support frame 61 through a sunk screw;

the table-seat surface 70 is a common sofa seat in the prior art, is connected with the third supporting frame 61 through a sunk screw, rotates along with the third supporting piece 60, has enough weight, can ensure that the fourth supporting frame 62 is always inserted with the convex pin 861, cannot fall off, and ensures the stability of rotation;

in another embodiment:

as shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 8, fig. 9, fig. 10, fig. 11, fig. 12, fig. 13; in practice, the driving swing arm assembly 80 comprises: an electric push rod 81, one end of which is connected to the base 10 and is arranged in the hollow structure; a main shaft assembly 82 having a lower end connected to the other end of the electric push rod 81 and an upper end connected to the first support member 40, and rotated by the electric push rod 81; a first swing arm 83 having one end connected to the upper end of the driving shaft assembly 82 and disposed between the first supporter 40 and the second supporter 50; a second swing arm 84, one end of which is movably connected to the other end of the first swing arm 83 and is disposed between the first support 40 and the second support 50; a driven shaft assembly 85 connected to the second support member 50, wherein the lower end of the driven shaft assembly is connected to the second swing arm 84, and the upper end of the driven shaft assembly passes through the second support member 50; a rotary plate 86 connected to the upper end of the driven shaft assembly 85 and disposed between the second supporting member 50 and the third supporting member 60, wherein the rotary plate 86 has four protruding pins 861, and the protruding pins 861 are inserted into the third supporting member 60; two travel switches 87 connected to the bottom of the first support 40 at intervals by a bending member 88 for cooperating with the driving shaft assembly 82; two limit blocks 89 connected to the top of the first support 40 at intervals for limiting the rotation angle of the first swing arm 83;

the electric push rod 81 is of a common structure in the prior art, such as a KDHCT004 type electric push rod, and is welded with one of the support columns 11 through two third connecting plates, and the electric push rod 81 is connected with the third connecting plates through outer hexagonal bolt pieces, so that one end of the electric push rod 81 is connected to the support column 11, and the telescopic shaft at the other end of the electric push rod 81 is connected with the second connecting plate 823 through a pin shaft; those skilled in the art, having the benefit of this disclosure, will be able to directly and unambiguously know how to arrange the power pushrod 81 without the need for creative work or undue experimentation;

the active shaft assembly 82 includes: a driving shaft 821, the upper end of which is connected with the first swing arm 83; a first bearing 822 connected to the first supporting member 40 for connecting and limiting the driving shaft 821; two second connecting plates 823 connected to the lower end of the driving shaft 821 and used for connecting the electric push rod 81 through a pin; the first pressure plate 824 is connected to the top of the driving shaft 821 and limits the first swing arm 83; the driving shaft 821 is a stepped shaft and is machined by a section of round steel; the first bearing 822 is a prior art sliding bearing; the second connecting plates 823 are welded on the driving shaft 821 at intervals; the first pressure plate 824 is a circular plate, and is connected with the driving shaft 821 through a countersunk bolt;

the first swing arm 83 is formed by machining a forging blank, one end of the first swing arm 83 is connected with the driving shaft 821 and is provided with a key, the other end of the first swing arm 83 is connected with the second swing arm 84 through a first pin shaft, and the first swing arm 83 can rotate around the driving shaft 821 or the first pin shaft as a rotation center, so that the first swing arm 83 can be linked with the second swing arm 84 to swing;

the second swing arm 84 is machined from a forging blank, and has one end connected to the driven shaft 851 and provided with a key;

the driven shaft assembly 85 includes: a driven shaft 851, the lower end of which is connected with the second swing arm 84; a second bearing 852 connected to the second support 50 for connecting and limiting the driven shaft 851; a first backing plate 853, which is sleeved on the driven shaft 851 and contacts with the second swing arm 84; and a second pressure plate 854 connected to the driven shaft 851 for limiting the second swing arm 84; the driven shaft 851 is a stepped shaft and is machined by a section of round steel; second bearing 852 is a prior art sliding bearing; the first base plate 853 is a circular plate and is used for adjusting the position of the second swing arm 84; the second pressure plate 854 is a circular plate and is connected with the driven shaft 851 through a countersunk head bolt;

the rotary disc 86 is formed by machining a forging blank, is circular in shape, and is tightly matched with the driven shaft 851 at the inner hole; the boss pin 861 is of a cylindrical structure and is connected with the rotary table 86 through a countersunk bolt;

the travel switch 87 is a common structure in the prior art and is used for limiting the rotation angle of the table and chair surface 70, and the rotation angle of the table and chair surface 70 is about 90 degrees;

the bending piece 88 is formed by bending a plate, is connected with the first support 40 through a screw, and is connected with the travel switch 87, so that the position of the travel switch 87 is matched with the second connecting plate 823, and when the second connecting plate 823 rotates along with the driving shaft 821, the travel switch 87 can be triggered to limit the rotation angle of the table-chair surface 70;

a screw is inserted between the limiting block 89 and the first support member 40 for limiting the rotation angle of the first swing arm 83;

in another embodiment:

as shown in fig. 1, fig. 2, fig. 3, fig. 6, fig. 9, fig. 10, fig. 12, fig. 13; when in implementation, the method further comprises the following steps: a first baffle 90 connected to the first support frame 12 and spaced apart from the first support member 40; the first baffle 90 is formed by bending a plate, and is connected with the first support frame 12 through a screw to form a block, so that components in a hollow structure are protected, and the first baffle is relatively attractive;

in another embodiment:

as shown in fig. 1, 2, 3, 11, 12, 13; when in implementation, the method further comprises the following steps: one end of a manual unlocking handle 100 penetrates through the decorative plate 20, is inserted into the driving swing arm assembly 80 and is linked with the driving swing arm assembly 80 to move, and the other end of the manual unlocking handle protrudes out of the decorative plate 20; the manual unlocking handle 100 is approximately of a Z-shaped structure and is formed by bending a circular tube, one end of the manual unlocking handle is inserted into the reserved cross-shaped end part on one end of the electric push rod 81 through a U-shaped groove, and the manual unlocking handle is used for manually controlling the electric push rod 81 to act when the power is off, so that the telescopic shaft on the electric push rod 81 acts, and the purpose of adjusting the angle and the position of the table seat 70 is realized;

the working principle is as follows: when the table and chair adjusting device is used, the swing arm assembly 80 is driven to move, the first support piece 40 is used as a rotation center to rotate, the second support piece 50, the third support piece 60 and the table and chair surface 70 are pushed to move along the linear guide rail 30, and the third support piece 60 and the table and chair surface 70 are linked to rotate by taking the second support piece 50 as a rotation center, so that the purpose of adjusting the angle and the position of the table and chair surface 70 is achieved, and the flexibility of use is relatively good;

in the description, it is to be understood that the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate orientations or positional relationships based on the positional relationships illustrated in the drawings, and are only for convenience of description or simplicity of description, but do not indicate that a particular orientation must be provided; the operation process described in the embodiment is not an absolute use step, and corresponding adjustment can be made during actual use;

unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art; the use of "first," "second," and the like in the description and in the claims does not denote any order, quantity, or importance, but rather the terms "a" and "an" and the like are used to distinguish one element from another, and likewise, no limitation of quantity is implied, but rather at least one is implied, as is determined by the context of the embodiment;

the above description is only for the preferred embodiment, but the scope of protection is not limited thereto, and any equivalent replacement or change based on the technical solution and the inventive concept within the technical scope of the disclosure of the person skilled in the art should be covered by the scope of protection.

Claims (10)

1. An electrically commutated seat, comprising:

the top of the base (10) forms a frame supporting structure after the base (10) is assembled, and after the decorative plate (20) is connected to the side wall of the base (10), the interior of the base (10) is a hollow structure;

two linear guide rails (30) symmetrically connected on the top of the base (10);

a first support member (40) connected to the base (10) and disposed between the linear guides (30);

a second supporting member (50) connected to the first slider on the linear guide (30) and spaced from the base (10) and the first supporting member (40);

a third support (60) the lower surface of which is in contact with the upper surface of the second support (50);

a table-chair surface (70) connected at the bottom to said third support (60);

and the driving swing arm assembly (80) is connected to the base (10) and is connected with the first support (40), the second support (50) and the third support (60), the driving swing arm assembly (80) acts to push the second support (50), the third support (60) and the table seat (70) to move along the linear guide rail (30) by taking the first support (40) as a rotation center, and the driving swing arm assembly (80) is linked with the third support (60) and the table seat (70) by taking the second support (50) as a rotation center to rotate.

2. An electrically commutated seat as defined in claim 1, wherein: the base (10) comprises: four support columns (11); and a first support frame (12) attached on top of the support column (11).

3. An electrically commutated seat as defined in claim 2, wherein: the decorative panel (20) includes: three side wall plates (21) connected to the support columns (11) and the side walls of the first support frame (12); and two base liners (22), one base liner (22) being attached to the bottom of two support columns (11).

4. An electrically commutated seat as defined in claim 2, wherein: further comprising: a first baffle (90) connected to the first support frame (12) and spaced from the first support member (40).

5. An electrically commutated seat as defined in claim 1, wherein: the second support (50) comprises: a second support frame (51); two first connecting plates (52) symmetrically arranged on the second supporting frame (51) and used for being connected with the first sliding blocks on the linear guide rail (30); a support block (53) connected to the middle portion of the second support frame (51), disposed on one side of the first connection plate (52), for connecting the first slider and the driving swing arm assembly (80); four first slides (54) connected on top of said second support frame (51), in direct contact with said third support (60); and two second blocking plates (55) symmetrically connected to the sidewalls of the second support frame (51) and respectively blocking one side of the linear guide (30).

6. An electrically commutated seat as defined in claim 5, wherein: the third support (60) comprises: a third support frame (61) connected to said table top (70); the fourth supporting frame (62) is connected to the middle part of the third supporting frame (61), is inserted with the driving swing arm assembly (80) and is rotated by the driving swing arm assembly (80) in a linkage manner; and two second runners (63) connected to the third support frame (61) in direct contact with the first runners (54).

7. An electrically commutated seat as defined in claim 1, wherein: the driving swing arm assembly (80) comprises: one end of the electric push rod (81) is connected to the base (10) and is arranged in the hollow structure; the lower end of the main drive shaft assembly (82) is connected with the other end of the electric push rod (81), the upper end of the main drive shaft assembly is connected with the first supporting piece (40), and the main drive shaft assembly is linked and rotated by the electric push rod (81); a first swing arm (83) having one end connected to an upper end of the main drive shaft assembly (82) and disposed between the first support (40) and the second support (50); a second swing arm (84) having one end movably connected to the other end of the first swing arm (83) and disposed between the first support (40) and the second support (50); the driven shaft assembly (85) is connected to the second supporting piece (50), the lower end of the driven shaft assembly is connected with the second swing arm (84), and the upper end of the driven shaft assembly penetrates out of the second supporting piece (50); a rotary plate (86) connected to the upper end of the driven shaft assembly (85) and arranged between the second support (50) and the third support (60), wherein the rotary plate (86) is provided with four convex pins (861), and the convex pins (861) are plugged with the third support (60); two travel switches (87) connected to the bottom of the first support member (40) at intervals by a bending member (88) for being engaged with the driving shaft assembly (82); and two limiting blocks (89) which are connected to the top of the first supporting piece (40) at intervals and used for limiting the rotating angle of the first swing arm (83).

8. An electrically commutated seat as defined in claim 7, wherein: the main drive shaft assembly (82) comprises: a driving shaft (821), the upper end of which is connected with the first swing arm (83); the first bearing (822) is connected to the first supporting piece (40) and is used for connecting and limiting the driving shaft (821); the two second connecting plates (823) are connected to the lower end of the driving shaft (821) and are used for being connected with the electric push rod (81) through a pin shaft; and a first pressure plate (824) connected to the top of the driving shaft (821) for limiting the first swing arm (83).

9. An electrically commutated seat as defined in claim 7, wherein: the driven shaft assembly (85) includes: a driven shaft (851), the lower end of which is connected with the second swing arm (84); a second bearing (852) connected to said second support (50) for engaging and retaining said driven shaft (851); a first base plate (853) which is sleeved on the driven shaft (851) and is contacted with the second swing arm (84); and a second pressure plate (854) connected to the driven shaft (851) for limiting the second swing arm (84).

10. An electrically commutated seat as defined in claim 1, wherein: further comprising: and one end of the manual unlocking handle (100) penetrates into the decorative plate (20) and is connected with the driving swing arm assembly (80) in an inserting mode to be linked with the driving swing arm assembly (80) to act, and the other end of the manual unlocking handle protrudes out of the decorative plate (20).

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