CN220220491U - Electric turntable and seat - Google Patents

Abstract

The utility model discloses an electric turntable and a seat, wherein the electric turntable comprises an upper disc body (100) and a lower disc body (200) which can rotate relatively, and further comprises a locking structure (300), the locking structure (300) comprises a locking bracket (301), a clamping groove bracket (302) and a first driving unit, the locking bracket (301) is hinged to the upper disc body (100), a lock pin (303) is arranged on the locking bracket (301), the clamping groove bracket (302) is connected to the lower disc body (200), the clamping groove bracket (302) is provided with clamping grooves (302 a) distributed along the circumferential direction, and the first driving unit is used for driving the locking bracket (301) to rotate, so that the lock pin (303) is clamped into any clamping groove (302 a) or is separated from the inside of the clamping groove (302 a). According to the utility model, the clamping groove support is additionally arranged, so that the multi-gear locking of the electric turntable is realized, the electric turntable is prevented from shaking caused by external force at the non-locking position, and the riding comfort is improved.

Description

Electric turntable and seat

Technical Field

The utility model relates to the technical field of vehicle seats, in particular to an electric rotating disc and a seat.

Background

Currently, most automobile seats have a seat rotating function to meet the needs of users. One of the existing ways to realize the rotation of the seat is to use an electric turntable, wherein the electric turntable comprises an upper disc and a lower disc, the lower disc is usually fixed relatively, the upper disc is fixed with a seat frame of the seat, and the upper disc and the lower disc can rotate relatively, so that the rotation of the seat is realized.

At present, the electric turntable is generally only at the design position, and a locking mechanism is arranged at the 180-degree position, so that the use scene is single, and when the seat rotates to the non-locking position, the electric turntable can shake in the rotation direction due to the fact that the electric turntable is subjected to external force factors, and the riding comfort of passengers is reduced.

Disclosure of Invention

The utility model aims to provide an electric turntable and a seat, which are suitable for various use scenes, reduce seat shake and improve riding comfort.

In order to solve the technical problems, the utility model provides an electric turntable which comprises an upper turntable body and a lower turntable body, wherein the upper turntable body is rotatably arranged above the lower turntable body,

still include locking structure, locking structure includes lock support, draw-in groove support and first drive unit, lock support articulated in last dish body, be provided with the lockpin on the lock support, draw-in groove support connect in lower dish body, the draw-in groove support have a plurality of draw-in grooves of distributing along circumference, first drive unit with lock support connect, be used for driving the lock support around with the articulated department rotation of last dish body, so that the lockpin card is gone into arbitrary the draw-in groove, perhaps make the lockpin is followed inside deviating from of draw-in groove.

According to the electric turntable, the clamping groove bracket with the plurality of clamping grooves is arranged, when the lock pin is clamped into any clamping groove, the upper disc body and the lower disc body of the electric turntable can be relatively locked, so that the automobile seat is ensured not to shake; when the seat is required to be rotated, the locking of the locking structure can be released, the upper disc body and the lower disc body are in a relative rotation state, the upper disc body is convenient to rotate, the angle adjustment of the seat is realized, and when the seat is rotated to a required position, the lock pin slides along the outline of the clamping groove bracket until sliding into the corresponding clamping groove of the clamping groove bracket, and the locking action is completed.

According to the utility model, the clamping grooves are distributed along the circumferential direction, when the lock pins slide into any clamping groove, the seat can be fixed at the current angle, so that multi-gear locking of the electric turntable in a 360-degree range is realized, a plurality of use scenes such as welcome and conversation are met, the phenomenon that the electric turntable is rocked due to external force factors when rotating to a non-locking position due to the limited number of mechanical locking positions of the electric turntable is avoided, and the riding comfort of passengers is improved.

Optionally, the locking structure further includes a connecting piece, the connecting piece connect in the upper plate body, the lock support is provided with the via hole, the connecting piece is followed the inside pass of via hole, and with the lock support axial spacing is connected, the lock support can be around the axis rotation of connecting piece.

Optionally, the first driving unit includes an unlocking motor and a transmission structure, and the unlocking motor can drive the lock bracket to rotate through the transmission structure so as to enable the lock pin to be separated from the clamping groove;

the first driving unit further comprises a reset spring, one end of the reset spring is connected with the upper disc body, the other end of the reset spring is connected with the lock bracket, when the lock pin is separated from the clamping groove, the reset spring stores energy gradually, and the reset spring can also drive the lock bracket to rotate under the action of restoring force, so that the lock pin is clamped into the clamping groove.

Optionally, the transmission structure comprises an unlocking cam and a zipper component, the unlocking cam is fixedly connected with an output shaft of the unlocking motor, one end of the zipper component is connected with the unlocking cam, the other end is connected with the lock pin,

the locking structure further comprises a wire harness support and a wire harness protective sleeve, wherein the wire harness support is connected with the upper disc body, the wire harness protective sleeve is connected with the wire harness support, and the zipper assembly movably penetrates through the wire harness protective sleeve.

Optionally, the return spring is a plate spring, the connecting piece is fixedly sleeved in a central hole of the plate spring, and the hanging end of the plate spring is hung on the lock pin.

Optionally, the locking structure further comprises a circlip, wherein the circlip is fixedly sleeved with the connecting piece and is located on the upper side of the leaf spring, and the circlip is used for axially limiting the leaf spring.

Optionally, the upper side wall of lower plate body the breach department of draw-in groove support is provided with the spacing support of lower plate, the lower side wall of upper plate body corresponds and is provided with the spacing support of upper plate, the spacing support of upper plate can with the spacing support butt of lower plate, in order to restrict the rotation scope of upper plate body.

Optionally, the device further comprises a second driving unit, the second driving unit comprises a driving motor, an output gear and an internal tooth part, the driving motor is connected with the upper disc body, the output gear is connected with an output shaft of the driving motor, a central hole is formed in the middle of the lower disc body, the internal tooth part is connected with the edge of the central hole, and the output gear is meshed with the internal tooth part.

Optionally, the motor fixing support is further included, the driving motor and the unlocking motor are fixedly installed on the motor fixing support, and the motor fixing support is connected with the upper disc body.

Optionally, the device further comprises an inner pressing plate and an outer pressing plate, wherein the middle part of the upper plate body is provided with an inner ring, the inner pressing plate is rotatably pressed on the inner ring side of the upper plate body and is connected with the lower plate body, and the outer pressing plate is rotatably pressed on the outer ring side of the upper plate body and is connected with the lower plate body.

Optionally, the device further comprises three rolling mechanisms, wherein one rolling mechanism is installed between the inner pressing disc and the inner ring side of the upper disc body, one rolling mechanism is installed between the outer pressing disc and the outer ring side of the upper disc body, and one rolling mechanism is installed between the upper disc body and the lower disc body.

The utility model also provides a seat, which comprises a seat frame and the electric turntable, wherein an upper disc body in the electric turntable is connected with the seat frame, and a lower disc body in the electric turntable is connected with a sliding rail or a vehicle body.

The seat of the utility model comprises the electric turntable, so that the seat has the same technical effects as the electric turntable and is not repeated herein.

Drawings

FIG. 1 is a schematic diagram of an embodiment of an electric turntable according to the present utility model;

FIG. 2 is a split view of the electric turntable of FIG. 1;

FIG. 3 is a schematic view of a locking structure of the electric rotating disc of FIG. 1;

FIG. 4 is a split view of the locking structure of FIG. 3;

FIG. 5 is a schematic diagram of the drive motor, the unlocking motor and the motor mounting bracket of the electric turntable of FIG. 1;

wherein reference numerals in fig. 1-5 are described as follows:

100-upper disc body;

200-a lower disc body;

300-locking structure; 301-lock brackets; 301 a-a via; 302-a clamping groove bracket; 302 a-a card slot; 303-locking pin; 304-connecting bolts; 305-connecting nuts; 306-unlocking the motor; 307-return spring; 308-wire harness brackets; 309-harness protective sleeve; 310-circlips;

401-a lower disc limiting bracket; 402-an upper disc limiting bracket;

501-driving a motor; 502-an output gear; 503-internal tooth part;

600-motor fixing bracket;

701-an inner platen; 702-an outer platen; 703-a scrolling mechanism.

Detailed Description

In order to make the technical solution of the present utility model better understood by those skilled in the art, the present utility model will be further described in detail with reference to the accompanying drawings and specific embodiments.

The term "plurality" as used herein is typically more than two; and when "a plurality" is used to denote the number of a certain number of components, the number of components is not necessarily related to each other.

Referring to fig. 1 to fig. 4, fig. 1 is a schematic structural diagram of an embodiment of an electric turntable according to the present utility model; FIG. 2 is a split view of the electric turntable of FIG. 1; FIG. 3 is a schematic view of a locking structure of the electric rotating disc of FIG. 1; fig. 4 is a split view of the locking structure of fig. 3.

The rotating function of the automobile seat can be realized by an electric rotating disc, wherein the electric rotating disc comprises an upper disc body 100 and a lower disc body 200, and generally, when the electric rotating disc is applied to the automobile seat, the lower disc body 200 is fixedly arranged and can be fixed on a sliding rail or a vehicle body, the upper disc body 100 is connected with a seat frame of the seat, the upper disc body 100 is rotatably arranged above the lower disc body 200, and the rotation of the seat is realized by the rotation of the upper disc body 100 relative to the lower disc body 200;

the electric turntable further comprises a locking structure 300, the locking structure 300 specifically comprises a locking bracket 301, a clamping groove bracket 302 and a first driving unit, the locking bracket 301 is provided with a lock pin 303, the locking bracket 301 is hinged to the upper disc body 100, the clamping groove bracket 302 is connected to the lower disc body 200, the clamping groove bracket 302 is provided with a plurality of clamping grooves 302a distributed along the circumferential direction, the driving unit is connected with the locking bracket 301 and is used for driving the locking bracket 301 to rotate around the hinged position with the upper disc body 100, so that the lock pin 303 is clamped into any clamping groove 302a, or the lock pin 303 is separated from the inside of the clamping groove 302a.

Thus, when the lock pin 303 is locked in any of the locking grooves 302a, the upper disc body 100 and the lower disc body 200 of the electric turntable can be locked relatively, so that the automobile seat is ensured not to shake; when the seat is required to be rotated, the locking structure 300 can be unlocked, so that the upper disc body 100 and the lower disc body 200 are in a relative rotation state, the upper disc body 100 is convenient to rotate, the angle adjustment of the seat is realized, and when the seat is rotated to a required position, the lock pin 303 slides along the outline of the clamping groove bracket 302 until sliding into the corresponding clamping groove 302a of the clamping groove bracket 302, and the locking action is completed.

According to the utility model, the number of the clamping grooves 302a in the clamping groove bracket 302 determines the gear number of the electric turntable, the clamping groove bracket 302 is provided with a plurality of clamping grooves 302a distributed along the circumferential direction, when the lock pins 303 slide into any clamping groove 302a, the seat can be fixed at the current angle, the multi-gear locking of the electric turntable within the range of 360 degrees is realized, a plurality of use scenes such as welcome, conversation and the like are met, the shaking caused by external force factors when the electric turntable rotates to the non-locking position due to the limited number of mechanical locking positions of the electric turntable is avoided, and the riding comfort of passengers is improved.

In practical application, the number of the clamping grooves 302a in the clamping groove bracket 302 is not limited, and taking the present utility model as an example, the number of the clamping grooves 302a is 28, and the included angle between the adjacent clamping grooves 302a is 10 °, that is, the electric turntable has 28 gears in total.

In this embodiment, as shown in fig. 4, the locking structure 300 further includes a connecting bolt 304 and a connecting nut 305, where the locking bracket 301 is provided with a through hole 301a, the upper plate body 100 is correspondingly provided with a connecting hole, the connecting nut 305 is fixed on the upper side wall of the upper plate body 100 and the corresponding position of the connecting hole, the connecting bolt 304 is inverted, i.e. the head of the connecting bolt 304 is located at the bottom of the upper plate body 100, the rod passes through the through hole 301a and the inside of the connecting hole sequentially from bottom to top and is in threaded connection with the connecting nut 305, and the head of the connecting bolt 304 realizes axial limitation of the locking bracket 301, so that the locking bracket 301 can rotate around the axis of the connecting bolt 304. The coupling bolts 304 and the coupling nuts 305 form a coupling between the lock bracket 301 and the upper plate body 100.

The fixing mode is reliable in connection and detachable, and the lock bracket 301 is convenient to maintain.

Of course, in practical application, the mode that lock bracket 301 articulates in last dish body 100 does not do the restriction, and the bottom integrated into one piece of last dish body 100 has the connecting rod, and the perisporium of connecting rod sets up the external screw thread, and lock bracket 301 is provided with via 301a, and the connecting rod passes from the inside of via 301a, still includes coupling nut, and coupling nut twists dress in the connecting rod, and coupling nut is located lock bracket 301's downside, realizes the axial spacing to lock bracket 301 for lock bracket 301 can rotate around the axis of connecting rod. At this time, the connection rod and the connection nut form a connection member between the lock bracket 301 and the upper disc body 100.

The first driving unit comprises an unlocking motor 306 and a transmission structure, and the unlocking motor 306 can drive the lock bracket 301 to rotate through the transmission structure so as to enable the lock pin 303 to be separated from the clamping groove 302a;

specifically, the transmission structure includes an unlocking cam and a zipper assembly, the unlocking cam is fixedly connected with an output shaft of the unlocking motor 306, one end of the zipper assembly is connected with the unlocking cam, and the other end of the zipper assembly is connected with the lock bracket 301.

Thus, when unlocking is needed, the unlocking motor 306 can be started to drive the unlocking cam to rotate, and the lock bracket 301 is pulled to rotate through the zipper assembly, so that the lock pin 303 is separated from the clamping groove 302a, and the unlocking of the upper disc body 100 and the lower disc body 200 is realized.

In order to enable the upper disc body 100 and the lower disc body 200 to be in the locking state, the lock pin 303 can be reliably clamped into the clamping groove 302a, and the lock bracket 301 is convenient to reset after unlocking, the locking structure 300 further comprises a reset spring 307, one end of the reset spring 307 can be connected with the upper disc body 100, the other end of the reset spring 307 is connected with the lock bracket 301, when the lock pin 303 of the lock bracket 301 is clamped into the clamping groove 302a, the reset spring 307 has an elastic force for keeping the lock pin 303 in the clamping groove 302a, and when the lock bracket 301 is in the unlocking state, the lock bracket 301 can be driven to rotate under the action of the reset force by the reset spring 307 so as to enable the lock pin 303 to be clamped into the clamping groove 302a.

In this embodiment, as shown in fig. 3 and 4, the return spring 307 is a plate spring, a central hole of the plate spring is fixedly sleeved with a connecting bolt 304, and a hanging end of the plate spring is hung on the lock pin 303.

Thus, when unlocking is needed, the unlocking motor 306 drives the lock bracket 301 to rotate, the lock pin 303 is separated from the clamping groove 302a, and the hanging end of the plate spring is gradually deformed to generate elastic force; when the latch bracket 301 is in a relaxed state after unlocking, the lock pin 303 is engaged into the catch 302a by the restoring force of the leaf spring.

In practical application, the return spring 307 may also be in the form of a tension rope, taking the return spring 307 as an example of the tension rope, when the lock pin 303 is clamped into the clamping groove 302a, the tension rope may be in a tensioning state, so that the lock pin 303 can be reliably clamped into the clamping groove 302a, and when unlocking is required, the unlocking motor 306 drives the lock bracket 301 to rotate, the lock pin 303 is separated from the clamping groove 302a, and the tension rope is gradually stretched and deformed; when the lock bracket 301 is unlocked and the zipper assembly is in a loose state, the lock pin 303 is clamped into the clamping groove 302a under the restoring force of the tensile cord.

As shown in fig. 4, in order to ensure the stability of the plate spring when the plate spring is mounted on the connecting bolt 304, to prevent the plate spring from being separated along the axial direction of the connecting bolt 304, the locking structure 300 further includes a circlip 310, and the circlip 310 is fixedly sleeved on the connecting bolt 304 and is located on the upper side of the plate spring, for axially limiting the plate spring.

In addition, as shown in fig. 1, the locking structure 300 further includes a wire harness support 308 and a wire harness protective sleeve 309, the wire harness support 308 is connected to the upper disc body 100, the wire harness protective sleeve 309 is connected to the wire harness support 308, and the zipper assembly movably penetrates through the wire harness protective sleeve 309.

As above, the arrangement of the wire harness support 308 and the wire harness protective sleeve 309 can play a role in fixing and protecting the zipper assembly, prevent the zipper assembly from sagging or swinging randomly in a loose state, and ensure that the zipper assembly is not damaged.

The connection manner of the wire harness bracket 308 and the upper disc body 100 is not limited, and for example, a bolt connection may be used. The harness protective sleeve 309 may be made of an insulating material such as plastic or rubber.

With continued reference to fig. 2, in this embodiment, a lower disc limiting bracket 401 is disposed at the notch of the clamping groove bracket 302 on the upper side wall of the lower disc body 200, and an upper disc limiting bracket 402 is correspondingly disposed on the lower side wall of the upper disc body 100, where the upper disc limiting bracket 402 can abut against the lower disc limiting bracket 401 to limit the rotation range of the upper disc body 100.

Referring to fig. 1-2, fig. 5 is a schematic structural diagram of a driving motor, an unlocking motor and a motor fixing bracket in the electric turntable of fig. 1.

The utility model further comprises a second driving unit, wherein the second driving unit comprises a driving motor 501, an output gear 502 and an internal tooth part 503, the driving motor 501 is used for driving the upper disc body 100 to rotate relative to the lower disc body 200, the driving motor 501 is connected with the upper disc body 100, the output gear 502 is connected with an output shaft of the driving motor 501, a central hole 200a is formed in the middle of the lower disc body 200, the internal tooth part 503 is connected to the edge of the central hole 200a, and the output gear 502 is meshed with the internal tooth part 503.

In this way, when the seat needs to be rotated and the upper disc body 100 and the lower disc body 200 are unlocked, the drive motor 501 is started to drive the output gear 502 to rotate, and the lower disc body 200 and the internal gear member 503 are relatively fixed, so that the upper disc body 100 can rotate relative to the lower disc body 200 by the engagement of the output gear 502 and the internal gear member 503.

The connection manner between the inner tooth member 503 and the bottom disc body 200 is not limited, for example, the inner tooth member 503 may be mounted on the edge of the central hole 200a in an interference fit manner; alternatively, the upper end of the internal tooth member 503 is provided with an outwardly extending turnover edge, and the internal tooth member 503 is mounted on the edge of the center hole 200a, and the turnover edge is supported by the lower disc body 200 and fixed to the lower disc body 200 by a connecting member such as a screw.

In this embodiment, the electric turntable further includes a motor fixing bracket 600, the driving motor 501 and the unlocking motor 306 are both installed on the motor fixing bracket 600, and the motor fixing bracket 600 is connected with the upper-disc body 100, so that the relative fixation of the two motors and the upper-disc body 100 is realized.

As described above, the motor fixing bracket 600 may be configured to modularize the driving motor 501 and the unlocking motor 306, thereby facilitating assembly.

As shown in fig. 1 and fig. 2, the upper disc body 100 is in an annular structure, an inner cavity is formed in the middle of the upper disc body, the motor fixing bracket 600 is in a plate-shaped structure and spans over the cavity of the upper disc body 100, and two ends of the motor fixing bracket 600 are connected with the upper disc body 100, so that the driving motor 501 and the unlocking motor 306 are conveniently arranged in the cavity, on one hand, the axial size of the electric turntable is reduced, the space is reasonably utilized, and the structure of the electric turntable is more compact; on the other hand, the mounting reliability of the two motors is improved.

Specifically, the end of the motor fixing bracket 600 may be fixedly connected to the upper plate body 100 by a fastener, and the fastener may be implemented as follows:

in a first implementation manner, the fastener includes a screw and a nut matched with the screw, where the screw can be inversely inserted into the upper disc body 100, i.e. the head of the screw is located at the bottom of the upper disc body 100, the rod passes through the upper disc body 100 and faces the motor fixing support 600, the corresponding position of the end of the motor fixing support 600 has a nail hole matched with the screw, and when assembled, the nail hole of the motor fixing support 600 is matched with the screw, so that the screw passes through the nail hole and then is screwed with the nut, thus realizing the relative fixation of the motor fixing support 600 and the upper disc body 100. This kind of fixed mode is detachable, conveniently maintains the upper plate body 100 and the motor of installing on it.

In the second implementation manner, the fastening piece includes a fixing rod and a fixing nut, the fixing rod is integrally formed on the top wall of the upper disc body 100 and extends vertically upwards, the peripheral wall of the fixing rod is provided with an external thread, a fixing hole matched with the fixing rod is formed at a corresponding position of the end part of the motor fixing support 600, when the motor fixing support is assembled, the fixing hole of the motor fixing support 600 is matched with the fixing rod, and the fixing rod passes through the fixing hole and is in threaded connection with the fixing nut, so that the relative fixation of the motor fixing support 600 and the upper disc body 100 is realized.

With continued reference to fig. 2, the present utility model further includes an inner pressing plate 701 and an outer pressing plate 702, wherein the middle part of the upper plate body 100 has an inner ring, the inner pressing plate 701 is rotatably pressed on the inner ring side of the upper plate body 100 and is connected with the lower plate body 200, and the outer pressing plate 702 is rotatably pressed on the outer ring side of the upper plate body 100 and is connected with the lower plate body 200.

In this way, the inner platen 701 and the outer platen 702 may play a limiting role on the upper disc body 100, so that the upper disc body 100 may only be located between the inner platen 701 and the outer platen 702, and perform a rotational movement relative to the lower disc body 200.

In addition, the present utility model includes three rolling mechanisms 703, wherein one rolling mechanism 703 is installed between the inner platen 701 and the inner ring side of the upper disc body 100, one rolling mechanism 703 is installed between the outer platen 702 and the outer ring side of the upper disc body 100, and one rolling mechanism 703 is installed between the upper disc body 100 and the lower disc body 200.

As described above, the provision of the rolling mechanism 703 can reduce friction between the inner pressure plate 701 and the inner ring side of the upper disc body 100, between the outer pressure plate 702 and the outer ring side of the upper disc body 100, and between the upper disc body 100 and the lower disc body 200 when the upper disc body 100 rotates, and improve the smoothness of rotation of the upper disc body 100.

The rolling mechanism 703 may include a cage having an annular structure and provided with retaining holes distributed in a circumferential direction, and steel balls mounted inside the retaining holes. The holder may be made of a plastic material.

The complete working process of the electric turntable in this embodiment is as follows:

when the seat needs to be rotated, the unlocking motor 306 can be controlled to start, the unlocking motor 306 drives the unlocking cam to rotate, the unlocking cam pulls the lock bracket 301 to rotate through the zipper assembly, so that the lock pin 303 is separated from the clamping groove 302a, in the process, the hanging end of the plate spring is gradually deformed, the unlocking of the upper disc body 100 and the lower disc body 200 is realized, the unlocking motor 306 keeps a working state, and the lock pin 303 keeps a separation state with the clamping groove 302a; then, the driving motor 501 is controlled to start, the driving motor 501 drives the output gear 502 to rotate, the upper disc body 100 rotates relative to the lower disc body 200 under the meshing action of the output gear 502 and the internal tooth part 503, and the angle adjustment of the seat is realized;

when the seat rotates to a required position, the driving motor 501 stops working, the unlocking motor 306 acts reversely, the zipper assembly is in a loose state, and the lock pin 303 slides along the outline of the clamping groove bracket 302 under the action of the restoring force of the plate spring until sliding into the corresponding clamping groove 302a of the clamping groove bracket 302 to be blocked, so that the locking action is completed.

The utility model also provides a seat, which comprises a seat frame and the electric turntable, wherein the upper disc body 100 in the electric turntable is connected with the seat frame, and the lower disc body 200 in the electric turntable is connected with a sliding rail or a vehicle body.

The seat comprises the electric rotating disc, so that the seat has the same technical effects as the electric rotating disc, and the technical effects are not repeated here.

The foregoing has outlined a detailed description of the utility model with respect to an electric turntable and chair, and the detailed description of the principles and embodiments of the utility model has been provided herein with the application of specific examples, which are intended to be merely illustrative of the method and core idea of the utility model. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the utility model can be made without departing from the principles of the utility model and these modifications and adaptations are intended to be within the scope of the utility model as defined in the following claims.

Claims (12)

1. An electric turntable comprises an upper turntable body (100) and a lower turntable body (200), wherein the upper turntable body (100) is rotatably arranged above the lower turntable body (200), and is characterized in that,

still include locking structure (300), locking structure (300) include lock support (301), draw-in groove support (302) and first drive unit, lock support (301) articulated in go up dish body (100), lock support (301) are connected with lockpin (303), draw-in groove support (302) connect in lower dish body (200), draw-in groove support (302) have a plurality of draw-in grooves (302 a) of circumference distribution, first drive unit with lock support (301) are connected, are used for driving lock support (301) around with the articulated department rotation of last dish body (100), so that lockpin (303) card income arbitrary draw-in groove (302 a), or make lockpin (303) follow inside draw-in groove (302 a).

2. The electric rotating disc according to claim 1, wherein the locking structure (300) further comprises a connecting piece, the connecting piece is connected to the upper disc body (100), the lock bracket (301) is provided with a through hole (301 a), the connecting piece passes through the inside of the through hole (301 a) and is in axial limit connection with the lock bracket (301), and the lock bracket (301) can rotate around the axis of the connecting piece.

3. The electric turntable according to claim 2, wherein the first driving unit comprises an unlocking motor (306) and a transmission structure, and the unlocking motor (306) can drive the lock bracket (301) to rotate through the transmission structure so as to enable the lock pin (303) to be separated from the clamping groove (302 a);

the first driving unit further comprises a reset spring (307), one end of the reset spring (307) is connected with the upper disc body (100), the other end of the reset spring is connected with the lock bracket (301), when the lock pin (303) is separated from the clamping groove (302 a), the reset spring (307) stores energy gradually, and the reset spring (307) can drive the lock bracket (301) to rotate under the action of restoring force, so that the lock pin (303) is clamped into the clamping groove (302 a).

4. The electric rotating disc according to claim 3, wherein the transmission structure comprises an unlocking cam and a zipper assembly, the unlocking cam is fixedly connected with an output shaft of the unlocking motor (306), one end of the zipper assembly is connected with the unlocking cam, the other end of the zipper assembly is connected with the lock pin (303),

the locking structure (300) further comprises a wire harness support (308) and a wire harness protective sleeve (309), wherein the wire harness support (308) is connected to the upper disc body (100), the wire harness protective sleeve (309) is connected with the wire harness support (308), and the zipper assembly movably penetrates through the wire harness protective sleeve (309).

5. An electric turntable according to claim 3, characterized in that the return spring (307) is a leaf spring, the central hole of which is fixedly sleeved with the connecting piece, and the hanging end of which is hung on the locking pin (303).

6. The electric turntable according to claim 5, wherein the locking structure (300) further comprises a circlip (310), the circlip (310) being fixedly sleeved on the connecting piece and being located on the upper side of the leaf spring for axially limiting the leaf spring.

7. The electric rotating disc according to any one of claims 1 to 6, wherein a lower disc limit bracket (401) is provided at a notch of the clamping groove bracket (302) on an upper side wall of the lower disc body (200), an upper disc limit bracket (402) is correspondingly provided on a lower side wall of the upper disc body (100), and the upper disc limit bracket (402) can be abutted with the lower disc limit bracket (401) so as to limit a rotation range of the upper disc body (100).

8. A motor-driven turntable according to claim 3, further comprising a second driving unit including a driving motor (501), an output gear (502) and an internal gear member (503), the driving motor (501) being connected to the upper-disc body (100), the output gear (502) being connected to an output shaft of the driving motor (501), a central hole (200 a) being provided in a middle portion of the lower-disc body (200), the internal gear member (503) being connected to an edge of the central hole (200 a), the output gear (502) being meshed with the internal gear member (503).

9. The electric turntable of claim 8, further comprising a motor fixing bracket (600), wherein the driving motor (501) and the unlocking motor (306) are both mounted on the motor fixing bracket (600), and wherein the motor fixing bracket (600) is connected with the upper tray body (100).

10. The electric rotating disc according to any one of claims 1 to 6, further comprising an inner platen (701) and an outer platen (702), wherein the middle part of the upper disc body (100) has an inner ring, the inner platen (701) is rotatably press-fitted on the inner ring side of the upper disc body (100) and connected with the lower disc body (200), and the outer platen (702) is rotatably press-fitted on the outer ring side of the upper disc body (100) and connected with the lower disc body (200).

11. The electric rotating disc according to claim 10, further comprising three rolling mechanisms (703), wherein one of the rolling mechanisms (703) is installed between the inner platen (701) and an inner ring side of the upper disc body (100), one of the rolling mechanisms (703) is installed between the outer platen (702) and an outer ring side of the upper disc body (100), and one of the rolling mechanisms (703) is installed between the upper disc body (100) and the lower disc body (200).

12. A seat comprising a seat frame, characterized in that it further comprises an electric rotating disc according to any one of claims 1 to 11, wherein an upper disc body (100) in the electric rotating disc is connected to the seat frame, and a lower disc body (200) in the electric rotating disc is connected to a slide rail or a vehicle body.