CN116268782A

CN116268782A - Rotary table and manufacturing method thereof

Info

Publication number: CN116268782A
Application number: CN202310184492.3A
Authority: CN
Inventors: 谭红平
Original assignee: Dongguan Yuanchuang Electronic Technology Co ltd
Current assignee: Dongguan Yuanchuang Electronic Technology Co ltd
Priority date: 2023-02-28
Filing date: 2023-02-28
Publication date: 2023-06-23

Abstract

The invention relates to the field of tables, in particular to a rotary table and a manufacturing method thereof. The rotary table comprises an upper table plate, a lower table plate, a rotary supporting seat and a power connecting piece, wherein the rotary supporting seat and the power connecting piece are arranged between the upper table plate and the lower table plate, the upper table plate can rotate relative to the lower table plate, and the power connecting piece is sleeved on the rotary supporting seat. The power supply connecting piece comprises an annular butt joint assembly, the annular butt joint assembly comprises a first cover body and a second cover body which are connected in a rotating mode, and a conductive track and a conductive contact piece are correspondingly arranged in the first cover body and the second cover body respectively; when the first cover body and the second cover body relatively rotate, the conductive contact piece moves along the conductive track. The conductive track and the conductive contact piece are respectively and electrically connected with external equipment, one of the first cover body and the second cover body is at least partially abutted against the lower table plate, and at least partially abutted against the upper table plate and rotated along with the upper table plate.

Description

Rotary table and manufacturing method thereof

[ field of technology ]

The invention relates to the field of tables, in particular to a rotary table and a manufacturing method thereof.

[ background Art ]

The rotary table is a common table form, is commonly used in dining tables, display tables and other scenes, and particularly is more common for rotary table, and comprises an upper table plate, a rotary supporting seat and a lower table plate; the rotary supporting seat is arranged between the lower table plate and the upper table plate, and the upper table plate can rotate relative to the lower table plate. Because the lower table plate is large in general area, people cannot conveniently clamp dishes, and the rotary table can facilitate people to clamp dishes by rotating the upper table plate.

When the existing rotary table is used for eating the chafing dish, the combustible chemical material is generally used on the upper table plate, but the combustible chemical material is very dangerous, and many explosion accidents on the rotary table can occur annually, so that many people lose beauty or life, the rotary table is mainly inconvenient to use heating appliances, and the upper table plate can be wound by electric wires in the rotating process to prevent the upper table plate from rotating.

[ invention ]

The invention provides a rotary table and a manufacturing method thereof, which aim to solve the problem that an upper table plate of the conventional rotary table is inconvenient to use electric appliances.

The invention provides a rotary table, which comprises an upper table plate, a lower table plate, a rotary supporting seat and a power supply connecting piece, wherein the rotary supporting seat and the power supply connecting piece are arranged between the upper table plate and the lower table plate; the power supply connecting piece is sleeved on the rotary supporting seat and simultaneously abuts against the upper table plate and the lower table plate, the power supply connecting piece comprises an annular abutting assembly, the annular abutting assembly comprises a first cover body and a second cover body which are rotatably connected, and annular conductive tracks and conductive contact pieces are correspondingly arranged in the first cover body and the second cover body respectively; the conductive contact moves along the conductive track when the first cover and the second cover are relatively rotated.

Preferably, one of the surface of the first cover body far away from the second cover body and the surface of the second cover body far away from the first cover body is provided with an elastic adjusting piece, and the other is provided with soft rubber.

Preferably, the number of the conductive tracks is set to be 2 or 3, and each conductive track is at least abutted against one conductive contact.

Preferably, the conductive tracks are arranged in concentric rings and are insulated from each other.

Preferably, the power connector further comprises a plug and a socket, one of the conductive track and the conductive contact is electrically connected with the plug, and the other is electrically connected with the socket.

Preferably, the annular butt joint assembly comprises a central through hole, the diameter of the central through hole is larger than that of the rotary supporting seat, and supporting foam is arranged on the surfaces of one side of the first cover body and one side of the second cover body, which face the central through hole.

Preferably, the conductive contact comprises a bracket and a roller, wherein the bracket is provided with a mounting groove, and the roller is rotatably connected in the mounting groove and partially exposes the mounting groove to be in contact with the conductive track.

Preferably, at least 2 rollers are arranged in the mounting groove at intervals, and the rollers on the same conductive contact piece are abutted against the same conductive track.

Preferably, the wheel rim of the roller is provided with an arc-shaped notch, the section of the conductive track is circular, the diameter of the arc-shaped notch is the same as that of the section of the conductive track, and the conductive track abuts against the arc-shaped notch and is attached to the inner wall of the arc-shaped notch.

The invention also provides a use method of the rotary table for solving the problems, which comprises the following steps:

providing a common rotary table;

removing the upper table plate of the rotary table;

sleeving the annular butt joint assembly of the power supply connecting piece on a rotary supporting seat between the upper table plate and the lower table plate;

aligning the circle center of the annular butt joint assembly with the circle center of the rotary supporting seat;

and adjusting the height of the annular butt joint assembly, and covering the upper table plate to enable one of the first cover body and the second cover body of the annular butt joint assembly to be at least partially abutted against the lower table plate, and the other one of the first cover body and the second cover body to be at least partially abutted against the upper table plate and rotate along with the upper table plate.

Compared with the prior art, the rotary table and the manufacturing method thereof have the following advantages:

1. the rotary table comprises an upper table plate, a lower table plate, a rotary supporting seat and a power supply connecting piece, wherein the rotary supporting seat and the power supply connecting piece are arranged between the upper table plate and the lower table plate, the upper table plate can rotate relative to the lower table plate, and the power supply connecting piece is sleeved on the rotary supporting seat and simultaneously abuts against the upper table plate and the lower table plate. The power supply connecting piece comprises an annular butt joint assembly, the annular butt joint assembly comprises a first cover body and a second cover body which are rotatably connected, and annular conductive tracks and conductive contacts are correspondingly arranged in the first cover body and the second cover body respectively; when the first cover body and the second cover body relatively rotate, the conductive contact piece moves along the conductive track. When the novel table is used, one of the first cover body and the second cover body is at least partially abutted against the lower table plate, and at least partially abutted against the upper table plate and rotated along with the upper table plate. When the upper table plate rotates, the cover body abutting against the upper table plate is driven to rotate, so that the first cover body and the second cover body also rotate relatively, and the conductive contact piece moves along the conductive track to enable the conductive contact piece to be electrically connected with the conductive track all the time. In this embodiment, at least a portion of the first cover abuts against the lower table, and at least a portion of the second cover abuts against the upper table. One of the conductive contact piece and the conductive track is electrically connected with an electric appliance to be used, the other one of the conductive contact piece and the conductive track is electrically connected with an external power supply, the electric appliance placed on the upper table plate can be conveniently used, compared with a traditional use mode, namely, wires connected between the electric appliance and the external power supply can be mutually wound or wound on a rotary table, so that potential power hazards are caused.

2. According to the invention, one of the surface of the first cover body far away from the second cover body and the surface of the second cover body far away from the first cover body is provided with an elastic adjusting piece, and the other is provided with soft rubber. The elastic adjusting piece and the soft rubber can improve the stability of the power connecting piece matched with the rotary table.

3. The number of the conductive tracks is set to be 2 or 3, and each conductive track is at least abutted against one conductive contact piece, so that the power supply connecting piece can be matched and connected with a three-hole socket or a double-hole socket, and the power supply connecting piece is convenient to be matched and used with an electric appliance carrying a three-pin plug and a double-pin plug.

4. The conductive tracks are arranged in concentric rings and are mutually insulated, so that the conductive contact piece can be always abutted against the annular conductive track in the rotating process of the first cover body relative to the second cover body.

5. The power connector of the invention further comprises a plug and a socket which are respectively connected with the conductive track and the conductive contact through wires. In the rotating process of the second cover body relative to the first cover body, the conductive contact piece moves on the conductive track, so that the plug and the socket are always electrically connected, and the function of conveniently using an electric appliance on the rotating table is realized.

6. The annular butt joint assembly comprises a central through hole in the middle, and the diameter of the central through hole is slightly larger than that of the rotary supporting seat. The first lid and the second lid all are provided with the support foam towards the one side surface of center through-hole. The setting supports the cotton when first lid is rotatory relative second lid, prevents that annular butt joint subassembly from facing to the direct rotation supporting seat friction with the rotary table of one side surface of center through-hole, has protected annular butt joint subassembly, has improved the life of power connection spare, sets up the position that supports the rotation supporting seat that the cotton still can dynamic adjustment annular butt joint subassembly and rotary table of support bubble, and specifically, the position coincidence at adjustment annular butt joint subassembly centre of a circle and rotation supporting seat centre of a circle makes things convenient for the power connection spare to use with the rotary table cooperation of many specifications.

7. The conductive contact piece comprises a bracket and a roller, wherein the bracket is provided with a mounting groove, and the roller is rotatably connected in the mounting groove and partially exposes out of the mounting groove to be in contact with the conductive track. The roller is arranged to enable the conductive contact to roll on the conductive track, friction between the conductive contact and the conductive track can be reduced relative to sliding, and the service life of the power supply connecting piece can be prolonged.

8. The invention has the advantages that the 2 rollers are arranged in the mounting groove at intervals, the rollers on the same conductive contact piece are abutted against the same conductive track, and compared with the arrangement of a single roller, the invention is beneficial to improving the abutting stability of the conductive contact piece and the conductive track, thereby improving the use stability of the power supply connecting piece.

9. The wheel rim of the roller is provided with the arc-shaped notch, the section of the conductive track is circular, the diameter of the arc-shaped notch is the same as that of the section of the conductive track, and the conductive track is abutted against the arc-shaped notch and is attached to the inner wall of the arc-shaped notch. On the one hand, the conductive contact piece cannot be shifted towards the direction perpendicular to the rotating direction of the conductive contact piece under the action of centrifugal force in the process of rotating on the conductive track, and on the other hand, the arc-shaped notch can improve the contact area between the conductive contact piece and the conductive track and improve the stability of the power supply connecting piece.

10. The invention also provides a manufacturing method of the rotary table, which has the same beneficial effects as the rotary table and is not described in detail herein.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is an exploded view of a rotary table according to a first embodiment of the present invention.

Fig. 2 is a schematic perspective view of a power connector of a rotary table according to a first embodiment of the present invention.

Fig. 3 is a schematic exploded view of a power connector of a rotary table according to a first embodiment of the present invention.

Fig. 4 is a schematic diagram showing an exploded structure of a power connector of a rotary table according to a first embodiment of the present invention.

Figure 5 is a cross-sectional view of a first embodiment of a ring-shaped docking assembly for a rotary table according to the present invention.

Fig. 6 is an enlarged view at a in fig. 5.

Figure 7 is a cross-sectional view of a ring-shaped docking assembly for a rotary table according to a first embodiment of the present invention.

Fig. 8 is an enlarged view at C in fig. 7.

Fig. 9 is a schematic perspective view of a conductive contact of a rotary table according to a first embodiment of the present invention.

Figure 10 is a side view of a conductive contact of a rotary table according to a first embodiment of the present invention.

Fig. 11 is a flowchart of a method of using a rotary table according to a second embodiment of the present invention.

The attached drawings are used for identifying and describing:

7. rotating the table;

11. an annular docking assembly; 12. a plug; 13. a socket; 16. a central through hole; 71. a table top; 72. a rotary support base; 73. a lower table plate; 74. a power supply connection;

111. a first cover; 112. a second cover; 113. a conductive track; 114. a conductive contact; 115. a partition plate; 117. supporting foam;

1116. an elastic adjusting member; 1124. a limit column; 1126. soft rubber; 1141. a limiting hole; 1142. a bracket; 1143. a roller; 1144. a mounting groove; 1145. an arcuate recess; 1146. and a second elastic member.

[ detailed description ] of the invention

The present invention will be described in further detail with reference to the accompanying drawings and examples of implementation in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.

Referring to fig. 1-4, a first embodiment of the present invention provides a rotary table 7, which includes an upper table 71, a lower table 73, a rotary support base 72 and a power connector 74 disposed between the upper table 71 and the lower table 73, wherein the upper table 71 can rotate relative to the lower table 73, and the power connector 74 is sleeved on the rotary support base 72 and simultaneously abuts against the upper table and the lower table. The power supply connector 74 comprises an annular butt joint assembly 11, the annular butt joint assembly 11 comprises a first cover body 111 and a second cover body 112 which are rotatably connected, and annular conductive tracks 113 and conductive contacts 114 are respectively and correspondingly arranged on the first cover body 111 and the second cover body 112; when the first cover 111 and the second cover 112 are rotated relatively, the conductive contact 114 moves along the conductive track 113. In use, one of the first cover 111 and the second cover 112 at least partially abuts the lower table 73 and at least partially abuts the upper table 71 and rotates with the upper table 71. When the upper table 71 rotates, the cover body abutting against the upper table 71 is driven to rotate, so that the first cover body 111 and the second cover body 112 also rotate relatively, and the conductive contact 114 moves along the conductive track 113, so that the conductive contact 114 is always electrically connected with the conductive track 113. In this embodiment, the first cover 111 at least partially abuts the lower table 73, and at least partially abuts the upper table 71. One of the conductive contact members 114 and the conductive track 113 is electrically connected with an electric appliance to be used, the other one is electrically connected with an external power supply, and the electric appliance placed on the upper table plate 71 can be conveniently used.

Further, the conductive track 113 is made of a conductive material, preferably a metal, such as iron, copper, and the like, and in this embodiment, the conductive track 113 is made of copper; the conductive contact 114 is also made of a conductive material, preferably graphite or metal, and in this embodiment, copper is used as the material of the conductive contact 114.

Further, one of the surface of the first cover 111 far from the second cover 112 and the surface of the second cover 112 far from the first cover 111 is provided with an elastic adjusting member 1116, and the other is provided with a soft rubber 1126. The resilient adjustment 1116 and the flexible glue 1126 each provide improved stability in the mating of the power connection 74 with the rotary table 7.

Further, the number of the conductive tracks 113 is set to be 2 or 3, and each conductive track 113 is at least abutted against one conductive contact 114, in this embodiment, each conductive track 113 is abutted against one conductive contact 114, so that the power connector 74 can be matched and connected with a three-hole socket or a double-hole socket, and the power connector 74 can be matched and used with an electric appliance carrying a three-pin plug and a double-pin plug conveniently.

Further, the conductive tracks 113 are arranged in concentric rings, and the conductive tracks 113 are insulated from each other, so that the conductive contact 114 can be always abutted against the annular conductive track 113 in the process of rotating the first cover 111 relative to the second cover 112.

As an alternative embodiment, a plurality of conductive contacts 114 are abutted on a single conductive track 113, and when the electric power meter is used, only one conductive contact 114 is electrically connected with an external power supply or an electric appliance to be used, and the rest conductive contacts 114 serve as standby elements, so that the electric power meter can be replaced in time when the conductive contacts 114 in use are damaged.

Further, when the number of the conductive contacts 114 is 2, the positions of the 2 conductive contacts 114 are set such that the included angle between the connecting line of the conductive contacts and the center of the conductive track 113 is 180 degrees; when the number of the conductive contacts 114 is 3, the positions of the 3 conductive contacts 114 are set such that the included angle between the connecting lines of the centers of the conductive tracks 113 and the conductive contacts is 120 degrees. By this arrangement, the influence of the conductive contacts 114 can be effectively eliminated, and the stability of the power connector 74 can be improved.

It will be appreciated that to prevent direct electrical connection between the conductive contacts 114 from shorting the power connection 74, the distance between the conductive contacts 114 should be set relatively far, i.e., the angle between the conductive contacts 114 and the center line of the conductive track 113 is not less than 90 degrees.

Further, when the number of the conductive tracks 113 is 2, one conductive track 113 is connected with the live wire of the external power supply, and the other conductive track 113 is connected with the zero wire of the external power supply; when the number of the conductive tracks 113 is 3, one conductive track 113 is connected with the live wire of the external power supply, one conductive track 113 is connected with the zero wire of the external power supply, and the other conductive track 113 is connected with the ground wire of the external power supply in use.

Further, the power connection 74 further includes a plug 12 and a socket 13, and the plug 12 and the socket 13 are connected to the conductive track 113 and the conductive contact 114 by wires, respectively. In the process of rotating the second cover 112 relative to the first cover 111, the conductive contact 114 moves on the conductive track 113, so that the plug 12 and the socket 13 are always electrically connected, and a function of conveniently using an electrical appliance on the rotary table is realized. In this embodiment, the conductive contacts 114 are connected to the receptacle 13 and the conductive tracks 113 are connected to the header 12.

Further, the annular docking assembly 11 includes a central through hole 16 in the middle, and the diameter of the central through hole 16 is slightly larger than that of the rotary support base 72. The first cover 111 and the second cover 112 are each provided with a supporting foam 117 on one side surface facing the center through hole 16. The setting up and supporting the cotton 117 of bubble is favorable to when first lid 111 is rotatory relative second lid 112, prevents that annular butt joint assembly 11 from directly rubbing with the rotation support seat 72 of rotatory table 7 towards the one side surface of center through-hole 16, has protected annular butt joint assembly 11, has improved the life of power connecting piece 74, sets up the position that supports the cotton 117 of bubble and still can dynamic adjustment annular butt joint assembly 11 and the rotation support seat 72 of rotatory table 7, and specifically, the position coincidence at the adjustment annular butt joint assembly 11 centre of a circle and the position at the rotation support seat 72 centre of a circle makes things convenient for power connecting piece 74 and the cooperation of the rotatory table 7 of many specifications to use.

Referring to fig. 5 and 6, in this embodiment, adjacent conductive tracks 113 are insulated by an insulating spacer 115. The spacer 115 protects the conductive tracks 113 to a degree that prevents the conductive tracks 113 from being spaced too close together to short circuit the power connection 74.

Referring to fig. 7 and 8, the inner surface of the second cover 112 is provided with a limiting post 1124, the conductive contact 114 is provided with a limiting hole 1141, and the limiting post 1124 penetrates into the limiting hole 1141. The conductive contact 114 is engaged with the limiting post 1124 through the limiting hole 1141 to enable it to rotate with the second cover 112, which facilitates the function of the power connector 74.

It can be appreciated that the movement linkage of the conductive contact 114 and the second cover 112 is not limited to the cooperation of the limiting post 1124 and the limiting hole 1141, and the conductive contact 114 may be clamped to the inner surface of the second cover 112, or the conductive contact 114 may be screwed to the second cover 112.

Further, the limiting post 1124 is sleeved with a second elastic member 1146, and opposite ends of the second elastic member 1146 are respectively abutted to the conductive contact 114 and the second cover 112. The second elastic member 1146 compresses to make the conductive contact 114 always abut against the conductive track 113, so as to prevent the power connection 74 from being disconnected due to the unstable abutment of the conductive contact 114 with the conductive track 113.

Referring to fig. 9 and 10, the conductive contact 114 includes a bracket 1142 and a roller 1143, the bracket 1142 is provided with a mounting groove 1144, and the roller 1143 is rotatably connected in the mounting groove 1144 and partially exposes the mounting groove 1144 to contact the conductive track 113. The roller 1143 may enable the conductive contact 114 to roll on the conductive track 113, which may reduce friction between the conductive contact 114 and the conductive track 113 relative to sliding, thereby facilitating an extended service life of the power connection 74.

Of course, the conductive contact 114 may be disposed in sliding contact with the conductive track 113, so long as the conductive contact 114 is ensured to be always in contact with the conductive track 113 during use of the power connector 74.

Further, 2 rollers 1143 are disposed in the mounting groove 1144 at intervals, and the rollers on the same conductive contact 114 are abutted against the same conductive track 113, so that stability of the abutment of the conductive contact 114 and the conductive track 113 is improved, and stability of the use of the power connector 74 is further improved, compared with the arrangement of a single roller 1143.

Of course, a single roller 1143 or multiple rollers 1143 may be disposed in the mounting groove 1144, which only needs to ensure that the power connection 74 always abuts the roller 1143 on the conductive track 113 during use.

Further, the rim of the roller 1143 is formed with an arc-shaped recess 1145, the cross section of the conductive track 113 is circular, the diameter of the arc-shaped recess 1145 is the same as the diameter of the cross section of the conductive track 113, and the conductive track 113 abuts against the arc-shaped recess and is attached to the inner wall of the arc-shaped recess 1145. On the one hand, the conductive contact 114 cannot be shifted towards the direction perpendicular to the rotation direction of the conductive contact 114 under the action of centrifugal force in the process of rotating the conductive contact 114 on the conductive track 113, and on the other hand, the arc-shaped notch 1145 is arranged to improve the contact area between the conductive contact 114 and the conductive track 113 and improve the stability of the power supply connector 74.

When the electric power socket is used, the plug 12 is electrically connected with an external power supply, the socket 13 is placed on the upper table plate 71, the socket 13 is always electrified and is relatively static with the upper table plate 71 in the rotating process of the upper table plate 71 relative to the lower table plate 73, an electric appliance to be used can be used by only connecting the socket 13, and wires between the electric appliance and the plug 12 cannot be mutually wound or wound on the rotary table 7.

Referring to fig. 11, a second embodiment of the present invention provides a method for using a rotary table 7, which includes:

s1, providing a common rotary table, comprising upper and

lower table plates

71, 73 which can rotate relatively up and down and a rotary table arranged between the upper and lower table plates

A support base 72;

s2, sleeving the annular butt joint assembly 11 of the power supply connecting piece 74 on the rotary supporting seat 72 between the upper table plate and the lower table plate, and enabling at least one of the first cover body 111 and the second cover body 112 of the annular butt joint assembly 11 to be at least partially abutted against the lower table plate 73, and enabling at least one of the other to be at least partially abutted against the upper table plate 71 and rotated along with the upper table plate 71.

Specifically, the annular docking assembly 11 of the power connector 74 is sleeved on the rotary supporting seat 72 between the upper table plate and the lower table plate, and further comprises the steps of taking down the upper table plate 71 of the rotary table, and then sleeving the annular docking assembly 11 on the rotary supporting seat 72.

Further, after the annular docking assembly 11 is sleeved on the rotary supporting seat 72, the following steps are further included:

aligning the center of the circle of the annular butt joint assembly 11 with the center of the circle of the rotary supporting seat 72;

the height of the annular docking assembly 11 is adjusted to cover the upper table 71, so that one of the first cover 111 and the second cover 112 of the annular docking assembly 11 at least partially abuts the lower table 73, and at least partially abuts the upper table 71 and rotates with the upper table 71.

The above description is only of the preferred embodiments of the present invention and is not intended to limit the invention, but any modifications, equivalents, improvements, etc. within the principles of the present invention should be included in the scope of the present invention.

Claims

1. The rotary table is characterized by comprising an upper table plate, a lower table plate, a rotary supporting seat and a power supply connecting piece, wherein the rotary supporting seat and the power supply connecting piece are arranged between the upper table plate and the lower table plate; the power supply connecting piece is sleeved on the rotary supporting seat and simultaneously abuts against the upper table plate and the lower table plate, the power supply connecting piece comprises an annular abutting assembly, the annular abutting assembly comprises a first cover body and a second cover body which are rotatably connected, and annular conductive tracks and conductive contact pieces are correspondingly arranged in the first cover body and the second cover body respectively; the conductive contact moves along the conductive track when the first cover and the second cover are relatively rotated.

2. The rotary table as claimed in claim 1, wherein one of the surface of the first cover body which is away from the second cover body and the surface of the second cover body which is away from the first cover body is provided with an elastic regulating member, and the other is provided with a soft gel.

3. The rotary table of claim 1 wherein the number of conductive tracks is 2 or 3, each of the conductive tracks abutting at least one of the conductive contacts.

4. A rotary table according to claim 3, wherein the conductive tracks are arranged in concentric rings and are insulated from each other.

5. The rotary table of claim 1, wherein the power connection further comprises a plug and a socket, one of the conductive track and the conductive contact is electrically connected to the plug, and the other is electrically connected to the socket.

6. The rotary table of claim 1, wherein the annular docking assembly comprises a central through hole having a diameter greater than the diameter of the rotary support base, and wherein the first cover and the second cover are each provided with a support foam on a side surface thereof facing the central through hole.

7. The rotary table of claim 1 wherein the conductive contact member comprises a bracket having a mounting slot and a roller rotatably coupled within the mounting slot and partially exposing the mounting slot to contact the conductive track.

8. The rotary table of claim 7 wherein at least 2 rollers are spaced apart in the mounting slot, the rollers on the same conductive contact abutting the same conductive track.

9. The rotary table as claimed in claim 7, wherein the rim of the roller is formed with an arc-shaped recess, the cross section of the conductive track is circular, the diameter of the arc-shaped recess is the same as the diameter of the cross section of the conductive track, and the conductive track abuts against the arc-shaped recess and is attached to the inner wall of the arc-shaped recess.

10. A method of using a rotary table according to any one of claims 1 to 9, comprising:

providing a common rotary table, which comprises an upper table plate, a lower table plate and a rotary supporting seat, wherein the upper table plate and the lower table plate can rotate relatively;

the annular butt joint assembly of the power supply connecting piece is sleeved on the rotary supporting seat between the upper table plate and the lower table plate, one of the first cover body and the second cover body of the annular butt joint assembly at least partially abuts against the lower table plate, and the other one of the first cover body and the second cover body at least partially abuts against the upper table plate and rotates along with the upper table plate.