Rotating device and seat

Abstract

A rotating device, which comprises: a fixed disc (200); a moving disc (300) rotationally arranged on the fixed disc by means of a rolling body; and a driving device for driving the moving disc to rotate relative to the fixed disc, the driving device driving, by means of a gear pair, the moving disc to rotate relative to the fixed disc. The rotating device further comprises: at least one limiting mechanism for limiting rotation of the moving disc. When the driving device drives the moving disc to stop at any position at any time, the limiting mechanism limits the rotation of the moving disc, such that the driving device stalls, so as to eliminate the clearance between teeth in the gear pair. The present invention also relates to a seat comprising the rotating device.

Description

Rotating device and seat

[0001] The present invention is based on and claims priority to CN application number CN202311428798.5, filed on October 31, 2023, and CN application number CN202410176279.2, filed on February 8, 2024. The disclosure of the CN application is hereby incorporated into the present disclosure as a whole. Technical Field

[0002] The present disclosure relates to the field of rotating seat locking, and in particular to a rotating device and a seat. Background Art

[0003] At present, most rotating seats use a rotating structure of a drive gear and a drive rack to drive the seat to rotate. Since there is still a small amount of clearance after the drive gear and the drive rack are engaged, this clearance causes the seat to shake after stopping and cannot be completely fixed and locked, affecting the user experience.

[0004] Chinese Patent Publication No. CN109823239B discloses an electric rotating device for a car seat. The device features a special-shaped tooth at the end of an arc-shaped rack that engages the drive motor to eliminate backlash during stalling. Because the special-shaped tooth is larger than the drive motor's meshing teeth, it generates an additional horizontal force component on the turntable during stalling, causing the seat to deviate from its designed position.

[0005] Chinese Patent Publication No. CN108556691B discloses an electric seat rotation mechanism that utilizes a hollowed-out arcuate slot in the rotating bracket, which, in conjunction with the motor, limits the seat's rotation angle. This technical solution only achieves locking at the ends, not in the middle. Furthermore, since a larger arcuate slot angle requires a larger hollowed-out area in the rotating bracket, this reduces bracket rigidity.

[0006] Korean Patent Publication No. KR1020230072736A discloses a brake actuator and an electric swivel seat equipped with the brake actuator. The system utilizes a dual-motor drive structure mounted on a transmission ring gear at the base of the swivel seat. The drive motor drives the transmission ring gear, while the stalled-rotor motor brakes the transmission ring gear. The stalled-rotor motor, with its built-in electronically controlled clutch brake, only performs the braking function. However, the motor with an overrunning clutch increases assembly cost.

[0007] Chinese Patent Publication Nos. CN116279039A and CN116039464A both disclose a powered rotation device for a vehicle seat. A moving plate and a fixed plate are connected by a two-way clutch. A brake roller locks the moving plate and the fixed plate, allowing the seat to rotate only from the motor. While this solves the problem of wobbling, the clutch components are difficult to manufacture and take up significant space within the vehicle.

[0008] Summary of the Invention

[0009] In view of the disadvantages of abnormal noise and shaking caused by the gap in the meshing structure between the drive gear and the drive rack when the drive motor drives the movable plate to stop at any position in the electric seat rotation structure existing in the prior art, the present disclosure provides a rotating device which can eliminate the gap in the meshing structure between the drive gear and the drive rack when the drive motor drives the movable plate to stop at any position.

[0010] In order to achieve the above-mentioned objectives of the present disclosure, the first aspect of the present disclosure relates to a rotating device, comprising:

[0011] Set the plate;

[0012] A moving plate rotatably arranged on a fixed plate via rolling elements;

[0013] A driving device for driving the movable plate to rotate relative to the fixed plate; the driving device drives the movable plate to rotate relative to the fixed plate through a gear pair; characterized in that: the rotating device further includes:

[0014] At least one limiting mechanism for limiting the rotation of the movable plate, which limits the rotation of the movable plate when the driving device drives the movable plate to stop at any position, so that the driving device is locked to eliminate the gap between the teeth in the gear pair.

[0015] In some disclosed embodiments, the driving device includes a driving motor; the gear pair includes a driving rack fixed on a movable plate or a fixed plate, and a driving gear fixed on an output shaft of the driving motor.

[0016] In some disclosed embodiments, the limiting mechanism includes a compensation motor and at least one shifting tooth fixed on the output shaft of the compensation motor; when the driving motor drives the movable plate to rotate through the gear pair, the shifting tooth does not engage with the driving rack; when the driving motor drives the movable plate to stop at any position, the compensation motor rotates in a direction opposite to the driving direction of the movable plate, drives the shifting tooth to rotate to an engaged position, engages with the driving rack, and limits the rotation of the movable plate.

[0017] In some disclosed embodiments, when the shifting teeth are engaged with the driving rack, the compensation motor is also stalled, eliminating the gap between the shifting teeth and the driving rack, and the driving device stops rotating.

[0018] In some disclosed embodiments, a paddle wheel is provided on the output shaft of the compensation motor, and at least one paddle tooth is circumferentially provided on the paddle wheel; when the movable plate rotates normally, the driving rack does not contact the paddle wheel under normal circumstances.

[0019] In some disclosed embodiments, the drive motor and the compensation motor are circumferentially arranged in the periphery or inner hole of the drive rack.

[0020] In some disclosed embodiments, the drive motor and the compensation motor are mounted on the fixed plate, and the drive rack is mounted on the movable plate; or the drive motor and the compensation motor are mounted on the movable plate, and the drive rack is mounted on the fixed plate.

[0021] In some disclosed embodiments, for the solution in which the drive motor and the compensation motor are installed on the fixed plate and the drive rack is installed on the movable plate, the rotating device also includes a transmission member that rotates synchronously with the movable plate, and the drive rack is fixed on the transmission member.

[0022] In some disclosed embodiments, the drive rack is a first arc-shaped rack or an annular rack.

[0023] In some disclosed embodiments, the central angle of the first arc-shaped rack is any angle greater than 0° and less than 360°.

[0024] In some disclosed embodiments, the central angle of the first arc-shaped rack is 90°, 180°, or 270°.

[0025] In some disclosed embodiments, the driving rack is a second arc-shaped rack, the limiting mechanism includes a first stop point structure arranged at both ends of the second arc-shaped rack, the driving device includes a driving motor and a driving gear fixed on the output shaft of the driving motor, the driving gear is engaged with the second arc-shaped rack, and drives the movable plate to rotate relative to the fixed plate; when the driving motor drives the driving rack to rotate to the position of the first stop point structure, the driving gear engages with the first stop point structure, causing the driving motor to be stalled.

[0026] In some disclosed embodiments, the central angle of the second arc-shaped rack is any angle greater than 0° and less than 360°, and the central angle of the second arc-shaped rack is limited by the first stop point structure.

[0027] In some disclosed embodiments, the central angle of the second arc-shaped rack is 90°, 180°, or 270°.

[0028] In some disclosed embodiments, the drive motor is mounted on the fixed plate, and the second arc-shaped rack is mounted on the movable plate; or the drive motor is mounted on the movable plate, and the second arc-shaped rack is mounted on the fixed plate.

[0029] In some disclosed embodiments, for the solution in which the drive motor is installed on the fixed plate and the second arc-shaped rack is installed on the movable plate, the rotating device further includes a transmission member that rotates synchronously with the movable plate, and the second arc-shaped rack is fixed on the transmission member.

[0030] In some disclosed embodiments, the driving rack is an annular rack, the limiting mechanism includes a compensation rack, the compensation rack is fixed together circumferentially with the driving rack, and the driving gear is engaged with the driving rack and the compensation rack at the same time; the central angle of the compensation rack is any angle greater than 0° and less than 360°; a second stop point structure is provided at each end of the compensation rack; when the driving motor drives the driving rack and the compensation rack to rotate to the position of the second stop point structure, the driving gear engages with the second stop point structure, causing the driving motor to be stalled.

[0031] In some disclosed embodiments, the central angle of the compensation rack is 90°, 180°, or 270°.

[0032] In some disclosed embodiments, the drive motor is mounted on the fixed plate, and the drive rack and the compensation rack are mounted on the movable plate; or the drive motor is mounted on the movable plate, and the drive rack and the compensation rack are mounted on the fixed plate.

[0033] In some disclosed embodiments, for the solution in which the drive motor is installed on the fixed plate and the drive rack and the compensation rack are installed on the movable plate, the rotating device also includes a transmission member that rotates synchronously with the movable plate, and the drive rack and the compensation rack are fixed on the transmission member.

[0034] In some disclosed embodiments, the limiting mechanism includes a thickened portion arranged at at least one angular position of the drive rack, and a third gear point structure is provided on the thickened portion; when the drive motor drives the drive rack to rotate to the position of the third gear point structure, the drive gear engages with the third gear point structure, causing the drive motor to be stalled.

[0035] In some disclosed embodiments, the angular position is a 0° position and / or a 270° position.

[0036] In some disclosed embodiments, the drive motor is mounted on the fixed plate, and the drive rack is mounted on the movable plate; or the drive motor is mounted on the movable plate, and the drive rack is mounted on the fixed plate.

[0037] In some disclosed embodiments, for the solution in which the drive motor is installed on the fixed plate and the drive rack is installed on the movable plate, the rotating device further includes a transmission member that rotates synchronously with the movable plate, and the drive rack is fixed on the transmission member.

[0038] In some disclosed embodiments, the limiting mechanism includes a cam arranged on the output shaft of the drive motor and a transmission member that rotates synchronously with the moving disk; the drive motor is mounted on the fixed disk, and the drive rack is mounted on the transmission member or the moving disk; a stop groove with a central angle greater than 0° and less than 360° is circumferentially arranged on the transmission member, and a stop position is respectively provided at both ends of the stop groove; the cam passes through the stop groove and can move in the stop groove; when the cam moves to the stop position at both ends of the stop groove, the transmission member, the drive rack and the moving disk are restricted from rotating, so that the drive motor is stalled.

[0039] In some disclosed embodiments, the limiting mechanism includes a cam arranged on the output shaft of the drive motor and a transmission member that rotates synchronously with the moving disk, the drive motor is mounted on the fixed disk, and the drive rack is mounted on the transmission member or the moving disk; at least one protrusion with a central angle greater than 0° and less than 360° is circumferentially arranged on the transmission member, and a recess is provided between the two ends of the protrusion or between adjacent protrusions, the cam extends into the cavity below the protrusion and can move in the cavity, and when the cam moves to the position of the recess at both ends of the cavity below the protrusion, the transmission member, the drive rack and the moving disk are restricted from rotating, so that the drive motor is stalled.

[0040] In some disclosed embodiments, a top surface of the protruding shaft is lower than a lower side of a top portion of the raised portion and higher than an upper side surface of a bottom portion of the recessed portion.

[0041] In some disclosed embodiments, the central angle of the protrusion is 90°, 180°, or 270°.

[0042] In some disclosed embodiments, a first arc-shaped weight-reducing groove is provided on the raised portion.

[0043] In some disclosed embodiments, a second arc-shaped groove is provided on the recessed portion.

[0044] In some disclosed embodiments, the rotating device also includes: a locking mechanism installed on the movable plate or the fixed plate; the locking mechanism can lock the movable plate and the fixed plate together at at least one position, and limit the rotation of the movable plate relative to the fixed plate, so that the drive motor is stalled.

[0045] In some disclosed embodiments, the limiting mechanism also includes a transmission member that rotates synchronously with the moving plate; the locking mechanism is installed on the transmission member or the moving plate or the fixed plate, and the locking mechanism can lock the transmission member and / or the moving plate with the fixed plate at at least one position, and limit the rotation of the transmission member and the moving plate relative to the fixed plate, so that the drive motor is stalled.

[0046] In some disclosed embodiments, at least one through hole is provided on the movable plate or the transmission member, and at least one locking hole is provided on the fixed plate, the movable plate or the transmission member. At least one locking pin in the locking mechanism passes through the through hole and the locking hole to lock the transmission member and / or the movable plate and the fixed plate together.

[0047] In some disclosed embodiments, the locking mechanism is provided on any one of the transmission member, the movable plate and the fixed plate.

[0048] In some disclosed embodiments, the locking mechanism further comprises:

[0049] A locking pin bracket is fixed on any one of the transmission member, the movable plate and the fixed plate; at least one locking pin is arranged on the locking pin bracket so as to be vertically movable or horizontally movable.

[0050] In some disclosed embodiments, the first end of the locking pin to be engaged in the locking hole is conical to achieve gap-free locking.

[0051] In some disclosed embodiments, the locking pin bracket has a top and four sides, wherein the four side portions are a first side, a second side, a third side and a fourth side, and at least one through-hole is provided at the top for allowing the second end of the locking pin opposite to the first end to pass through.

[0052] In some disclosed embodiments, the first side portion and the second side portion are formed by bending the first side and the second side of the top downward and are symmetrically located on the first side and the second side of the top, and the third side portion and the fourth side portion are formed by bending both sides of the second side portion forward and are welded to the first side portion.

[0053] In some disclosed embodiments, a locking pin noise-absorbing bushing is installed in the corresponding through-hole, and the second ends of the two locking pins pass through the locking pin noise-absorbing bushing.

[0054] In some disclosed embodiments, the locking mechanism further comprises:

[0055] An unlocking bracket is hinged on the locking pin bracket, the unlocking bracket is drivingly connected to the locking pin and drives the locking pin to unlock.

[0056] In some disclosed embodiments, the unlocking bracket is hinged on the locking pin bracket through an unlocking handle fixing pin.

[0057] In some disclosed embodiments, two first hinge ears are symmetrically arranged on the unlocking bracket, and a first hinge hole is arranged in each first hinge ear.

[0058] In some disclosed embodiments, a first fixing pin bushing is installed in each first reaming hole, and both ends of the unlocking handle fixing pin pass through the fixing pin bushings respectively.

[0059] In some disclosed embodiments, two second locking ears are symmetrically arranged on the first side of the locking pin bracket, and a second hinge hole is arranged in each second hinge ear. Both ends of the unlocking handle fixing pin pass through the second hinge holes and are anchored.

[0060] In some disclosed embodiments, a second fixing pin bushing is installed in each second reaming hole, and both ends of the unlocking handle fixing pin pass through the second fixing pin bushings respectively.

[0061] In some disclosed embodiments, an unlocking portion is provided on the unlocking bracket, at least one lock pin slot is provided on the unlocking portion, and a convex ring is provided at the middle position of the corresponding lock pin. The unlocking portion can be inserted into the locking pin bracket from the bottom of the first side portion of the locking pin bracket, and the corresponding lock pin slot on the unlocking portion can be inserted into the position below the convex ring on the corresponding locking pin and make the upper surface of the unlocking portion contact the lower surface of the convex ring, and the unlocking bracket drives the lock pin to move upward through the convex ring to unlock.

[0062] In some disclosed embodiments, a locking pin return spring is sleeved on the second end of the corresponding locking pin, the lower end of the locking pin return spring abuts against the convex ring, and the upper end of the locking pin return spring abuts against the lower side of the top of the locking pin bracket.

[0063] In some disclosed embodiments, the rotating device also includes a lock mounting bracket, which is installed on any one of the transmission part, the movable plate and the fixed plate using fasteners, and the bottoms of the first side, the second side, the third side and the fourth side of the locking pin bracket are welded to the lock mounting bracket.

[0064] In some disclosed embodiments, a gap is left between the bottom of the first side portion and the upper surface of the lock mounting bracket, and the unlocking portion can be inserted into the locking pin bracket through the gap.

[0065] In some disclosed embodiments, at least one lock pin hole is provided on the lock mounting bracket, the lock pin hole is aligned with the through hole on the movable disk, and the first end of the lock pin can pass through the lock pin hole and the through hole.

[0066] In some disclosed embodiments, an unlocking operating portion is provided on the unlocking bracket, and the unlocking bracket can be driven to flip by operating the unlocking operating portion to achieve unlocking.

[0067] In some disclosed embodiments, when the locking mechanism is installed on any one of the transmission member, the movable plate and the fixed plate, the locking mechanism can be installed with the unlocking operating part facing the outside of the movable plate, or with the unlocking operating part facing the inside of the movable plate.

[0068] In some disclosed embodiments, an unlocking cable hanging ear is provided on the unlocking operating portion, and one end of the unlocking cable is connected to the unlocking cable hanging ear.

[0069] In some disclosed embodiments, an unlocking pin is installed on the unlocking operating part and also includes an unlocking handle, which is hinged on the movable disk; an unlocking groove is provided on the unlocking handle, and the unlocking groove has an arc-shaped groove edge; the unlocking pin is inserted into the unlocking groove and contacts the arc-shaped groove edge; when the unlocking handle is rotated, the unlocking handle drives the unlocking pin to move through the arc-shaped groove edge, and drives the unlocking bracket to unlock.

[0070] In some disclosed embodiments, ramps are provided on both sides of the lock hole on the fixed disk surface along the rotation direction of the movable disk, and the lock hole is located at the level of the highest position of the ramp.

[0071] In some disclosed embodiments, two locking pins are provided, and two through holes are correspondingly provided, and the locking holes are waist-shaped holes.

[0072] In some disclosed embodiments, the two locking pins are arranged in parallel and can respectively pass through the two through holes and be inserted into the locking hole for locking.

[0073] In some disclosed embodiments, two through-holes are opened at the top.

[0074] In some disclosed embodiments, two locking pin notches are arranged side by side on the unlocking portion.

[0075] In some disclosed embodiments, two lock pin holes are provided side by side on the lock mounting bracket, and the two lock pin holes are aligned one by one with corresponding through holes on the movable disk.

[0076] In some disclosed embodiments, the rotating device includes a transmission member that rotates synchronously with the moving disk, the limiting mechanism includes a cam arranged on the output shaft of the driving motor, a circumferentially arranged protrusion on the transmission member, and at least one stop block arranged at any position in the protrusion, the driving motor is mounted on the fixed disk, and the driving rack is mounted on the transmission member or the moving disk; the cam extends into the cavity below the protrusion and can move in the cavity, and when the cam moves to the position of the stop block, the transmission member, the driving rack and the moving disk are restricted from rotating, so that the driving motor is stalled.

[0077] In some disclosed embodiments, a top surface of the protruding shaft is lower than a lower side surface of a top portion of the protruding portion and higher than a bottom surface of the stopper.

[0078] In some disclosed embodiments, the stopper is set at a position of 90°, 180° or 270°.

[0079] A second aspect of the present disclosure relates to a seat, comprising the aforementioned rotating device.

[0080] The beneficial effects of the present disclosure are:

[0081] The rotating device and seat provided by the present disclosure eliminate the gaps between the teeth in the gear pair by blocking the rotation of the driving device. Specifically: on the one hand, by matching a compensation motor such as a single tooth, the operating sequence of the compensation motor and the driving motor is controlled, the driving motor is blocked in the form of a clutch, and gapless locking of each position is achieved; on the other hand, by adding a transmission member and setting a stop position on the transmission member, gapless locking of the end position is achieved in conjunction with the blocking of the driving motor; on the third hand, by providing a locking mechanism that can lock the moving plate and the fixed plate, gapless locking of the end position is achieved in conjunction with the blocking of the driving motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0082] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the following briefly introduces the drawings required for describing the embodiments or the prior art.

[0083] FIG1 is a schematic diagram of the engagement of the driving motor, the compensating motor, and the driving rack according to Example 1 of the present disclosure.

[0084] FIG2 is an exploded schematic diagram of the rotating device of Example 1 of the present disclosure (without the driving rack).

[0085] FIG3 is a schematic diagram of the assembly of the rotating device of Example 1 of the present disclosure.

[0086] FIG4 is a schematic diagram of the driving gear in the rotating device of Example 1 of the present disclosure rotating counterclockwise and engaging with the driving rack.

[0087] FIG5 is a schematic diagram of the driving gear in the rotating device of Example 1 of the present disclosure rotating clockwise and engaging with the driving rack.

[0088] FIG6 is a schematic diagram of the thumbwheel in the rotating device of Example 1 of the present disclosure rotating clockwise to contact the driving rack.

[0089] FIG7 is a schematic diagram of the thumbwheel in the rotating device of Example 1 of the present disclosure rotating counterclockwise to contact the driving rack.

[0090] FIG8 is a schematic diagram showing a situation in which the thumbwheel in the rotating device of Example 1 of the present disclosure rotates clockwise and engages with the driving rack to cause a stall.

[0091] FIG9 is a schematic diagram showing the counterclockwise rotation of the thumbwheel in the rotating device of Example 1 of the present disclosure and the engagement of the thumbwheel with the driving rack to cause a stall.

[0092] FIG10 is an overall schematic diagram of the rotating device of Example 2 of the present disclosure.

[0093] FIG11 is an exploded view of the rotating device of Example 2 of the present disclosure.

[0094] FIG12 is a schematic diagram showing the drive rack in the rotating device of Example 2 of the present disclosure being installed on the transmission frame.

[0095] FIG13 is an overall schematic diagram of the rotating device of Example 3 of the present disclosure

[0096] FIG14 is an exploded schematic diagram of the rotating device of Example 3 of the present disclosure.

[0097] FIG15 is a schematic diagram of the arc-shaped rack structure and installation of the rotating device of Example 3 of the present disclosure.

[0098] FIG16 is a schematic diagram of the driving gear in the rotating device of Example 3 of the present disclosure being locked after rotating counterclockwise and engaging with the blocking point structure on the arc-shaped rack.

[0099] FIG17 is a schematic diagram of the driving gear in the rotating device of Example 3 of the present disclosure being locked after rotating clockwise and engaging with the blocking point structure on the arc-shaped rack.

[0100] FIG18 is an overall schematic diagram of the rotating device of Example 4 of the present disclosure.

[0101] FIG19 is an exploded schematic diagram of the rotating device of Example 4 of the present disclosure (supplementation is required).

[0102] FIG20 is a schematic diagram of the arc-shaped rack structure and installation of the rotating device of Example 4 of the present disclosure (needs to be supplemented).

[0103] FIG21 is a schematic diagram of the driving gear in the rotating device of Example 4 of the present disclosure being locked after rotating counterclockwise and engaging with the blocking point structure on the arc-shaped rack.

[0104] FIG22 is a schematic diagram of the driving gear in the rotating device of Example 4 of the present disclosure being locked after rotating clockwise and engaging with the blocking point structure on the arc-shaped rack.

[0105] FIG23 is an overall schematic diagram of the rotating device of Example 5 of the present disclosure.

[0106] FIG24 is an exploded schematic diagram of the rotating device of Example 5 of the present disclosure.

[0107] FIG25 is a schematic diagram showing the compensating rack and the annular rack in the rotating device of the embodiment of the present disclosure being installed on the transition frame.

[0108] FIG26 is a schematic diagram of the driving gear in the rotating device of Example 5 of the present disclosure being locked after rotating counterclockwise and engaging with the blocking point structure on the compensation rack.

[0109] FIG27 is a schematic diagram of the driving gear in the rotating device of Example 5 of the present disclosure being locked after rotating clockwise and engaging with the blocking point structure on the compensation rack.

[0110] FIG28 is an overall schematic diagram of the rotating device of Example 6 of the present disclosure.

[0111] FIG29 is an exploded schematic diagram of the rotating device of Example 6 of the present disclosure.

[0112] Figure 30 is a schematic diagram of the annular rack and the compensation rack in the rotating device of Example 6 of the present disclosure being installed on the transmission frame.

[0113] Figure 31 is a schematic diagram of the combination and installation of the compensation rack and the annular rack in the rotating device of Example 6 of the present disclosure.

[0114] Figure 32 is a schematic diagram of the driving gear in the rotating device of Example 6 of the present disclosure being locked after rotating counterclockwise and engaging with the blocking point structure on the compensation rack.

[0115] FIG33 is a schematic diagram of the driving gear in the rotating device of Example 6 of the present disclosure being locked after rotating clockwise and engaging with the blocking point structure on the compensation rack.

[0116] FIG34 is an overall schematic diagram of the rotating device of Example 7 of the present disclosure.

[0117] FIG35 is an exploded schematic diagram of the rotating device of Example 7 of the present disclosure.

[0118] FIG36 is a schematic diagram of the annular rack structure and installation in the rotating device of Example 7 of the present disclosure.

[0119] Figure 37 is a schematic diagram of the driving gear in the rotating device of Example 7 of the present disclosure rotating counterclockwise and then being locked after engaging with the upper stop point structure of the thickened portion on the annular rack.

[0120] Figure 38 is a schematic diagram of the driving gear in the rotating device of Example 6 of the present disclosure rotating clockwise and then being locked after engaging with the upper blocking point structure of the thickened portion on the annular rack.

[0121] FIG39 is an overall schematic diagram of the rotating device of Example 8 of the present disclosure.

[0122] FIG40 is an exploded schematic diagram of the rotating device of Example 8 of the present disclosure.

[0123] Figure 41 is a schematic diagram of the annular rack structure and installation in the rotating device of Example 8 of the present disclosure.

[0124] Figure 42 is a schematic diagram of the driving gear in the rotating device of Example 8 of the present disclosure rotating counterclockwise and then being locked after engaging with the blocking point structure on the thickened portion of the annular rack.

[0125] Figure 43 is a schematic diagram of the driving gear in the rotating device of Example 8 of the present disclosure rotating clockwise and then being locked after engaging with the blocking point structure on the thickened portion of the annular rack.

[0126] Figure 44 is an overall schematic diagram of the rotating device of Example 9 of the present disclosure.

[0127] FIG45 is an exploded schematic diagram of the rotating device of Example 9 of the present disclosure.

[0128] Figure 46 is a schematic diagram of the combination of the driving motor, the moving plate and the fixed plate in the rotating device of Example 9 of the present disclosure.

[0129] Figure 47 is a schematic diagram of the annular rack in the rotating device of Example 9 of the present disclosure being installed on the transmission frame.

[0130] Figure 48 is a schematic diagram showing that the moving disk in the rotating device of Example 9 of the present disclosure moves counterclockwise so that the convex shaft stops when it hits the stop position at one end of the stop groove and causes the drive motor to be stalled.

[0131] Figure 49 is a schematic diagram showing that the moving disk in the rotating device of Example 9 of the present disclosure moves clockwise so that the convex shaft stops when it hits the stop position at the other end of the stop groove and causes the drive motor to be stalled.

[0132] Figure 50 is an overall schematic diagram of the rotating device of embodiment 10 of the present disclosure.

[0133] FIG51 is an exploded schematic diagram of the rotating device of Example 10 of the present disclosure.

[0134] Figure 52 is a schematic diagram of the annular rack in the rotating device of embodiment 10 of the present disclosure being installed on the transmission frame.

[0135] Figure 53 is a schematic structural diagram of the transmission frame in the rotating device of Example 10 of the present disclosure.

[0136] Figure 54 is a schematic diagram of the clockwise movement of the movable disk in the rotating device of embodiment 10 of the present disclosure, which causes the convex shaft to stop when it hits the concave portion and causes the drive motor to be stalled.

[0137] Figure 55 is an overall schematic diagram of the rotating device of Example 11 of the present disclosure.

[0138] FIG56 is an exploded schematic diagram of the rotating device of Example 11 of the present disclosure.

[0139] Figure 57 is a schematic diagram of the annular rack in the rotating device of Example 11 of the present disclosure being installed on the transmission frame.

[0140] Figure 58 is a schematic diagram of the clockwise movement of the movable disk in the rotating device of Example 11 of the present disclosure, causing the convex shaft to stop when hitting the block and causing the drive motor to be stalled.

[0141] Figure 59 is an overall schematic diagram of the rotating device of Example 12 of the present disclosure.

[0142] FIG60 is an exploded schematic diagram of the rotating device of Example 12 of the present disclosure.

[0143] Figure 61 is a schematic diagram of the annular rack in the rotating device of Example 12 of the present disclosure being installed on the transmission frame.

[0144] Figure 62 is a schematic diagram of the clockwise movement of the movable disk in the rotating device of Example 13 of the present disclosure, which causes the convex shaft to stop when it hits the recessed portion and causes the drive motor to be stalled.

[0145] Figure 63 is a schematic diagram of the decomposition of the locking mechanism of Example 14 of the present disclosure.

[0146] Figure 64 is a schematic diagram of the locking pin bracket structure in the locking mechanism of Example 14 of the present disclosure.

[0147] Figure 65 is a structural schematic diagram of the locking mechanism of Example 14 of the present disclosure.

[0148] Figure 66 is a schematic diagram of the assembly process of the locking mechanism of Example 14 of the present disclosure.

[0149] Figure 67 is a schematic diagram of the process of installing the locking mechanism of embodiment 14 of the present disclosure onto the moving plate in the first installation method.

[0150] Figure 68 is a schematic diagram of the first installation method of the locking mechanism of Example 14 of the present disclosure installed on the moving plate.

[0151] Figure 69 is an enlarged schematic diagram of point I in Figure 68.

[0152] Figure 70 is a schematic diagram of the process of installing the locking mechanism of Example 14 of the present disclosure onto the moving plate in the second installation method.

[0153] Figure 71 is a schematic diagram of the second installation method of the locking mechanism of Example 14 of the present disclosure installed on the movable plate.

[0154] Figure 72 is an enlarged schematic diagram of point I in Figure 71.

[0155] Figures 73a to 73d are schematic diagrams of the locking pin locking process of embodiment 14 of the present disclosure.

[0156] Figures 74a to 74g are schematic diagrams of the conversion process between locking and unlocking of the rotating seat vertical latch locking mechanism of embodiment 14 of the present disclosure.

[0157] Figure 75 is a structural schematic diagram of the locking mechanism of Example 15 of the present disclosure.

[0158] Figure 76 is a schematic diagram of the decomposition of the locking mechanism of Example 15 of the present disclosure.

[0159] Figures 77a to 77f are schematic diagrams of the conversion process between locking and unlocking of the locking mechanism of Example 15 of the present disclosure.

[0160] Figures 78a to 78i are schematic diagrams of the conversion process between locking and unlocking of the locking mechanism of Example 16 of the present disclosure.

[0161] Figure 79 is a schematic diagram of the assembly of the rotating device of Example 17 of the present disclosure.

[0162] Figure 80 is a schematic diagram of the exploded view of the rotating device of Example 17 of the present disclosure. DETAILED DESCRIPTION

[0163] In the description of the present disclosure, it should be noted that the terms "up", "down", "left", "right", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. Longitudinal (X direction)", "lateral (Y direction)" and "vertical (Z direction)" are terms used in the automotive field as spatial coordinate systems, and are professional terms well known to those skilled in the art. The above description is simplified for the sake of convenience in describing the present disclosure, and does not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, it should not be understood as a limitation on the present disclosure.

[0164] The disclosed concept of the present invention is a further improvement to the existing rotating device, which includes a fixed plate and a movable plate, and the movable plate is rotatably arranged on the fixed plate through rolling bodies (not shown in the figures of the following embodiments, but very familiar to those skilled in the art).

[0165] This rotating device is usually used for rotating seats in vehicles. When used for seat rotation, the fixed plate is usually fixedly mounted on the vehicle floor, and the movable plate is fixedly mounted and connected to the seat so that the seat can rotate like this.

[0166] The movable disc drives the rotation of the seat, which can be driven by a driving device. The driving device can be manual or electric. The present disclosure mainly improves the rotating device provided with an electric driving device, and does not consider the manual driving device.

[0167] The electric drive device can drive the movable plate together with the seat to rotate between 0° and 360° and can stop at any position, such as 90°, 180°, 270° and 360°. Of course, it can stop at positions other than these angles, which is set as needed.

[0168] As for the rotating device disclosed herein, since it is used for rotating seats in a vehicle, its electric drive device generally includes a drive motor and a gear pair. The gear pair generally includes a drive rack fixed to a movable plate or a fixed plate and a drive gear fixed to the output shaft of the drive motor. If the drive rack is fixed to the movable plate, the drive motor is mounted on the fixed plate; if the drive rack is fixed to the fixed plate, the drive motor is mounted on the movable plate. However, for the preferred embodiment, the following embodiments all adopt the embodiment in which the drive rack is fixed to the movable plate and the drive motor is mounted on the fixed plate, but this does not exclude the embodiment in which the drive rack is fixed to the fixed plate and the drive motor is mounted on the movable plate.

[0169] Regardless of the solution, after the drive motor is powered on, it drives the drive gear to rotate, and the drive gear drives the drive rack to rotate by engaging with the drive rack. The rotating drive rack drives the dynamic plate to rotate, and the dynamic plate drives the seat to rotate.

[0170] The above descriptions are all technical solutions currently adopted, but there is a problem with the above existing technologies, that is, when the drive motor is powered off and stops working, that is, the drive motor drives the movable plate together with the seat to rotate between 0° and 360° and can stop at any position, there is usually a gap between the teeth on the drive gear and the teeth on the drive rack. This gap will cause the seat to shake during the vehicle's driving process, causing noise and affecting the riding comfort. The present disclosure has made improvements to the above existing technologies. The disclosure point is to add at least one limiting mechanism for limiting the rotation of the movable plate. When the drive motor drives the movable plate to stop at any position, the limiting mechanism can limit the rotation of the movable plate, causing the drive motor to be stalled, and the gap between the teeth in the drive gear and the teeth in the drive rack is eliminated.

[0171] The following will describe exemplary embodiments of the present application with reference to the accompanying drawings to further illustrate the disclosed concepts. However, it should be understood that the present application can be presented in a variety of different ways and is not limited to the embodiments described below. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide more additional embodiments. In all figures, the same reference numerals represent the same or functionally identical elements.

[0172] Example 1

[0173] 1 to 9 , the rotating device of this embodiment includes a drive motor 100, which is fixedly mounted on a fixed plate 200; a gear pair includes a drive rack fixed on a movable plate 300 and a drive gear 110 fixed on an output shaft of the drive motor 100, the drive gear 110 being engaged with the drive rack and driving the movable plate 300 to rotate relative to the fixed plate 200.

[0174] In this embodiment, the drive rack is an annular rack 400 that can rotate 360 ​​degrees. Of course, depending on the rotation angle, the annular rack 400 can also be an arcuate rack (the aforementioned first arcuate rack), with the central angle of the arcuate rack being greater than 0° and less than 360°, such as 90°, 180°, or 270°. It can also be any angle other than 90°, 180°, or 270°, depending on the needs.

[0175] The limiting mechanism of this embodiment includes a compensating motor 500 and a thumbwheel 510 fixed to the output shaft of the compensating motor 500. The compensating motor 500 is also fixedly mounted on the fixed plate 200. The thumbwheel 510 is provided with at least one thumbtooth 511 around its circumference (of course, the number of thumbtooths 511 can be determined as needed and is not limited to one).

[0176] The annular rack 400 can have either an external tooth structure or an internal tooth structure. When the annular rack 400 has an external tooth structure, the drive motor 100 and the compensating motor 500 are circumferentially arranged around the periphery of the annular rack 400. When the annular rack 400 has an internal tooth structure, the drive motor 100 and the compensating motor 500 are circumferentially arranged within the inner hole of the annular rack 400. A preferred embodiment is a solution in which the annular rack 400 has an external tooth structure and the drive motor 100 and the compensating motor 500 are circumferentially arranged around the periphery of the annular rack 400.

[0177] The angle between the rotational centers of the respective gears of the drive motor 100 and the compensation motor 500 and the center of the movable plate 300 can be selected within a range greater than 0° and less than 360°. For example, the drive motor 100 and the compensation motor 500 can be arranged on the same side or on different sides of the outer periphery of the annular rack 400, depending on the needs. It is best to arrange the compensation motor 500 symmetrically with the drive motor 100 so that the annular rack 400 can be subjected to force from both sides.

[0178] In this embodiment, the drive motor 100 and the compensation motor 500 are mounted on the fixed plate 200, and the annular rack 400 is mounted on the movable plate 300 (of course, the drive motor 100 and the compensation motor 500 can be mounted on the movable plate 300, and the annular rack 400 can be mounted on the fixed plate 200).

[0179] 4 and 5 , when the drive motor 100 switches from normal rotation to stopped rotation, there must be a gap A on either side between the tooth 111 on the drive gear 110 and the two adjacent teeth 410 and 420 on the annular rack 400, which allows the annular rack 400 to continue to rotate slightly. The position of the gap A depends on the position of the contact point B between the tooth 110 on the drive gear 100 and the teeth 410 and 420 on either side of the annular rack 400.

[0180] Referring to Figures 6 and 8 , when the annular rack 400 rotates normally under the drive gear 110, the annular rack 400 normally does not contact the thumbwheel 510. After the drive motor 100 switches from the energized rotation state to the de-energized stop state (as shown in Figures 4 and 5 ), that is, when the movable plate 300 drives the seat to stop at any angle, the seat control system energizes the compensation motor 500 to drive the thumbwheel 510 to rotate clockwise. As shown in Figure 6 , the thumbwheel 510 tooth 511 on the thumbwheel 510 intersects clockwise between two adjacent teeth 430 and 440 of the annular rack 400 and contacts a tooth 430 of the annular rack 400 at contact point C, pushing the annular rack 400 to rotate counterclockwise. This causes the tooth 111 on the drive gear 110 to be pushed by a tooth 410 on the annular rack 400, thereby causing the drive motor 100 to self-lock. When the control module in the seat control system detects that the current of the compensation motor 500 reaches the specified value, the tooth 511 on the dial wheel 510 actually contacts a tooth 430 of the annular rack 400 at the contact point C, eliminating the gap between the tooth 511 on the dial wheel 510 and a tooth 430 of the annular rack 400. The compensation motor 500 is powered off and self-locked, so that the compensation motor 500, the annular rack 400 and the drive motor 100 form a two-way blocking structure on the transmission path to eliminate the shaking gap.

[0181] Similarly, referring to Figures 7 and 9, the compensation motor 500 can rotate counterclockwise, causing the shifting tooth 511 on the dial wheel 510 to actually contact the other tooth 440 of the annular rack 400 at contact point D, eliminating the gap between the shifting tooth 511 on the dial wheel 510 and the other tooth 440 of the annular rack 400. At the same time, the annular rack 400 is driven to rotate clockwise, causing the tooth 111 on the drive gear 110 to contact the other tooth 420 of the annular rack 400, causing the drive motor 100 to become stalled. At this time, the compensation motor 500 is also stalled.

[0182] The compensation motor 500 is engaged with the annular rack 400 only through an independent shifting tooth 511. Since the compensation motor 500 also has a self-locking function, when the annular rack 400, i.e., the moving disk 300, needs to be driven normally by the driving motor 100, the compensation motor 500 is energized, and first drives the dial wheel 510 to rotate in the opposite direction to disengage the shifting tooth 511, away from the annular rack 400, and cuts off the power after the stall state is released, and then energizes the driving motor 100 to drive the annular rack 400 to rotate.

[0183] In this way, the dual-motor structure enables the annular rack 400, i.e., the movable plate 300, to rotate throughout a full circle and achieve gapless locking at any position.

[0184] Example 2

[0185] This embodiment differs from the first embodiment in that, as shown in Figures 10 to 12 , it further includes a transmission frame 600 that rotates synchronously with the annular rack 400, i.e., the movable plate 300. The annular rack 400 is fixed to the transmission frame 600 via fasteners 450, and the drive motor 100 and the compensation motor 500 are mounted on the fixed plate 200. Of course, the drive motor 110 and the compensation motor 500 can also be mounted on the transmission frame 600, and the annular rack 400 on the fixed plate 200. The remainder of this embodiment is the same as that of the first embodiment.

[0186] Example 3

[0187] The difference between this embodiment and embodiment 1 is that: referring to Figures 13 to 17, the driving rack is an arc-shaped rack 400a (the aforementioned second arc-shaped rack), the limiting mechanism also includes a blocking point structure 410a arranged at both ends of the arc-shaped rack 400a, and the driving device also includes a driving motor 100 and a driving gear 110 fixed on the output shaft of the driving motor 100, the driving gear 110 is engaged with the arc-shaped rack 400a, and drives the movable plate 300 to rotate relative to the fixed plate 200; when the driving motor 100 drives the arc-shaped rack 400a to rotate to the blocking point structure 410a position through the driving gear 110 and stops due to power failure, any tooth 111 on the driving gear 110 is engaged with the blocking point structure 410a, so that the driving motor 100 is stalled to eliminate the gap between the tooth 111 on the driving gear 110 and the blocking point structure 410a on the arc-shaped rack 440a.

[0188] The central angle of the arc-shaped rack 400a in this embodiment is any angle greater than 0° and less than 360°, such as 90°, 180°, or 270°. The central angle of the arc-shaped rack 400a is also limited by the corresponding stop point structure, that is, the position of the stop point structure affects the range of the central angle of the arc-shaped rack 400a.

[0189] The arc-shaped rack 400a in this embodiment is fixed on a transition frame 310 that rotates along with the moving plate 300. In the present disclosure, both the transmission frame and the transition frame can be understood as transmission members.

[0190] This embodiment can retain the compensation motor 500 and the dial 510, so that the movable disk 300 stops rotating at any angle whose central angle is greater than 0° and less than 360°, as in embodiment 1. Alternatively, the compensation motor 500 can be eliminated, so that the movable disk 300 stops rotating only at the blocking point structures 410a at both ends of the arc-shaped rack 400a, so that the drive motor 100 is locked, thereby eliminating the gap between the teeth 111 on the drive gear 110 and the blocking point structures 410a on the arc-shaped rack 400a.

[0191] The remaining undescribed parts of this embodiment are the same as those of Embodiment 1.

[0192] Example 4:

[0193] The difference between this embodiment and embodiment 2 is that: referring to Figures 18 to 22, the driving rack is an arc-shaped rack 400a (the aforementioned second arc-shaped rack), the limiting mechanism also includes a blocking point structure 410a arranged at both ends of the arc-shaped rack 400a, and the driving device also includes a driving motor 100 and a driving gear 110 fixed on the output shaft of the driving motor 100, the driving gear 110 is engaged with the arc-shaped rack 400a, and drives the movable plate 300 to rotate relative to the fixed plate 200; when the driving motor 100 drives the arc-shaped rack 400a to rotate to the blocking point structure 410a position through the driving gear 110 and stops due to power failure, any tooth 111 on the driving gear 110 is engaged with the blocking point structure 410a, so that the driving motor 100 is stalled to eliminate the gap between the tooth 111 on the driving gear 110 and the blocking point structure 410a on the arc-shaped rack 400a.

[0194] The central angle of the arc-shaped rack 400a in this embodiment is any angle greater than 0° and less than 360°, such as 90°, 180°, or 270°. Similarly, the central angle of the arc-shaped rack 400a is also limited by the corresponding stop point structure, that is, the position of the stop point structure affects the range of the central angle of the arc-shaped rack 400a.

[0195] The arc-shaped rack 400 a is fixed on the transmission frame 600 .

[0196] This embodiment can retain the compensating motor 500 and the dial 510, allowing the movable disk 300 to stop at any angle within a central angle greater than 0° and less than 360°, as in Example 2. Alternatively, the compensating motor 500 can be eliminated, allowing the movable disk 300 to stop only at the stop point structures 410a at both ends of the arc-shaped rack 400a, thereby causing the drive motor 100 to be locked and eliminating the gap between the teeth 111 on the drive gear 110 and the stop point structures 410a on the arc-shaped rack 400a.

[0197] The remaining undescribed parts of this embodiment are the same as those of embodiment 2.

[0198] Example 5

[0199] This embodiment differs from Example 1 in that, as shown in Figures 23 and 27 , while retaining annular rack 400, the limiting mechanism further includes a compensating rack 400b. Compensating rack 400b is secured to annular rack 400 and to a transition frame 310 that rotates with movable plate 300. Drive gear 110 engages both annular rack 400 and compensating rack 400b simultaneously. Compensating rack 400b is also an arc-shaped rack, with a central angle of 90°, 180°, or 270°, being any angle greater than 0° and less than 360°.

[0200] A stop point structure 410b is provided at each end of the compensation rack 400b; when the drive motor 100 drives the annular rack 400 and the arc-shaped compensation rack 400b to rotate to the stop point structure 410b position through the drive gear 110, the drive gear 110 engages with the stop point structure 410b, so that the drive motor 120 is stalled to eliminate the gap between the teeth 111 on the drive gear 110 and the annular rack 400 and the gap between the teeth 111 on the drive gear 110 and the stop point structure 410b on the arc-shaped compensation rack 400b.

[0201] This embodiment can retain the compensation motor 500 and the dial 510, so that the movable disk 300 stops rotating at any angle with a central angle greater than 0° and less than 360°, as in Example 1. Alternatively, the compensation motor 500 can be eliminated, so that the movable disk 300 stops rotating only at the stop point structures 410b at both ends of the compensation rack 400b, causing the drive motor 100 to be locked, thereby eliminating the gaps between the teeth 111 on the drive gear 110 and the annular rack 400, and the gaps between the teeth 111 on the drive gear 110 and the stop point structures 410b on the arc-shaped compensation rack 400b.

[0202] Another advantage of this embodiment is that, for the rotating device of the existing annular rack 400, when it is necessary to stop the rotating disk 300 at a specific angle, there is no need to replace the annular rack 400 with an arc-shaped rack. Instead, a compensating rack 400b can be superimposed on the annular rack 400, which saves replacement time and reduces the inventory of parts.

[0203] The remaining undescribed parts of this embodiment are the same as those of embodiment 1.

[0204] Example 6

[0205] The difference between this embodiment and embodiment 2 is that: referring to Figures 28 and 33, while retaining the annular rack 400, the limiting mechanism also includes a compensation rack 400b, the compensation rack 400b is fixed together with the annular rack 400 and fixed on the transmission frame 600, and the driving gear 110 is engaged with the annular rack 400 and the compensation rack 400b at the same time; the compensation rack 400b is also an arc-shaped rack, and the central angle of the compensation rack 400b is any angle greater than 0° and less than 360°, for example, 90°, 180°, or 270°.

[0206] A stop point structure 410b is provided at each end of the compensation rack 400b; when the drive motor 100 drives the annular rack 400 and the arc-shaped compensation rack 400b to rotate to the stop point structure 410b position through the drive gear 110, the drive gear 110 engages with the stop point structure 410b, so that the drive motor 100 is stalled to eliminate the gap between the teeth 111 on the drive gear 110 and the annular rack 400 and the gap between the teeth 111 on the drive gear 110 and the stop point structure 410b on the arc-shaped compensation rack 400b.

[0207] This embodiment can retain the compensation motor 500 and the dial 510, so that the movable disk 300 stops rotating at any angle with a central angle greater than 0° and less than 360°, as in Example 2. Alternatively, the compensation motor 500 can be eliminated, so that the movable disk 300 stops rotating only at the stop point structures 410b at both ends of the compensation rack 400b, causing the drive motor 100 to be locked, thereby eliminating the gaps between the teeth 111 on the drive gear 110 and the annular rack 400, and the gaps between the teeth 111 on the drive gear 110 and the stop point structures 410b on the arc-shaped compensation rack 400b.

[0208] Another advantage of this embodiment is that, for the rotating device of the existing annular rack 400, when it is necessary to stop the rotating disk 300 at a specific angle, there is no need to replace the annular rack 400 with an arc-shaped rack. Instead, a compensating rack 400b can be superimposed on the annular rack 400, which saves replacement time and reduces the inventory of parts.

[0209] The remaining undescribed parts of this embodiment are the same as those of embodiment 2.

[0210] Example 7

[0211] The difference between this embodiment and embodiment 1 is that: referring to Figures 34 to 38, its limiting mechanism also includes a thickened portion 410c arranged at at least one arbitrary angular position of the annular rack 400c, for example, at the 0° position and / or the 270° position, and a blocking point structure 411c is provided on the thickened portion 410c. For example, the overall thickness of the annular rack 400c is 3 mm, and the thickened portion 410c is 6 mm.

[0212] The annular rack 400 c in the first embodiment is fixed on a transition frame 310 that rotates along with the moving plate 300 .

[0213] When the drive motor 100 drives the annular rack 400c to rotate to the blocking point structure 411c through the drive gear 110, the drive gear 110 engages with the blocking point structure 411c, causing the drive motor 100 to be locked to eliminate the gap between the teeth 111 on the drive gear 110 and the blocking point structure 411c.

[0214] This embodiment can retain the compensating motor 500 and the dial 510, so that the movable plate 300 stops rotating at any angle between a central angle greater than 0° and less than 360°, as in Embodiment 1. Alternatively, the compensating motor 500 can be eliminated, so that the movable plate 300 stops rotating only at the blocking point structure 411 c, causing the drive motor 100 to become locked, thereby eliminating the gap between the teeth 111 on the drive gear 110 and the blocking point structure 411 c.

[0215] Another advantage of this embodiment is that, for the rotating device of the existing annular rack 400c, when it is necessary to stop the rotating disk 300 at a specific angle, there is no need to replace the annular rack 400c with an arc-shaped rack. Instead, a thickened portion 410c can be superimposed on the annular rack 400c, which saves replacement time and reduces the inventory of parts.

[0216] Example 8

[0217] The difference between this embodiment and embodiment 2 is that: referring to Figures 39 to 43, its limiting mechanism also includes a thickened portion 410c arranged at at least one arbitrary angular position of the annular rack 400c, for example, at the 0° position and / or the 270° position, and a blocking point structure 411c is provided on the thickened portion 410c. For example, the overall thickness of the annular rack 400c is 3 mm, and the thickened portion 410c is 6 mm.

[0218] The annular rack 400 c in the first embodiment is fixed on a transmission frame 600 that rotates along with the moving plate 300 .

[0219] When the drive motor 100 drives the annular rack 400c to rotate to the blocking point structure 411c through the drive gear 110, the drive gear 110 engages with the blocking point structure 411c, causing the drive motor 100 to be locked to eliminate the gap between the teeth 111 on the drive gear 110 and the blocking point structure 411c.

[0220] This embodiment can retain the compensating motor 500 and the dial 510, so that the movable plate 300 stops rotating at any angle between a central angle greater than 0° and less than 360°, as in Embodiment 1. Alternatively, the compensating motor 500 can be eliminated, so that the movable plate 300 stops rotating only at the blocking point structure 411 c, causing the drive motor 100 to become locked, thereby eliminating the gap between the teeth 111 on the drive gear 110 and the blocking point structure 411 c.

[0221] Another advantage of this embodiment is that, for the rotating device of the existing annular rack 400c, when it is necessary to stop the rotating disk 300 at a specific angle, there is no need to replace the annular rack 400c with an arc-shaped rack. Instead, a thickened portion 410c can be superimposed on the annular rack 400c, which saves replacement time and reduces the inventory of parts.

[0222] Example 9

[0223] The difference between this embodiment and embodiment 1 is that: referring to Figures 44 to 49, a transmission frame 600a is added, and the transmission frame 600a is fixedly mounted on the movable plate 300 and rotates synchronously with the movable plate 300. Its limiting mechanism also includes a cam 120 provided on the output shaft of the drive motor 100 and at least one stop groove 610a provided on the transmission frame 600a, the central angle of which is greater than 0° and less than 360°. For example, the central angle of the stop groove 610a is 90°, 180°, or 270°.

[0224] The drive motor 100 is mounted on the fixed plate 200, and the annular rack 400 is mounted on the transmission frame 600a (of course, it can also be mounted on the movable plate 300); a stop position 611a, 612a is respectively provided at both ends of the stop groove 610a; the cam 120 passes through the stop groove 610a and can move relative to the movable plate 300 in the stop groove 610a; when the cam 120 moves relative to the movable plate 300 to the stop positions 611a, 612a at both ends of the stop groove 610a, the transmission member 610a and the movable plate 300 are restricted from rotating, so that the drive motor 100 is stalled to eliminate the aforementioned gap A.

[0225] In this embodiment, if only the stop positions 611a and 612a at the circumferential ends of the stop groove 610a are required to restrict the rotation of the movable plate 300 and the drive motor 100 from being locked, the compensation motor 500 and the dial wheel 510 in Example 1 can be eliminated.

[0226] In this embodiment, if it is also necessary to restrict the rotation of the movable disk 300 and the drive motor 100 from rotating at any position between the stop positions 611a and 612a at the circumferential ends of the stop groove 610a to eliminate the gap A, the compensation motor 500 and the dial wheel 510 are retained. Like Example 1, the movable disk 150 can be restricted from rotating at any position between the stop positions 611a and 612a at the circumferential ends of the stop groove 610a, so that the drive motor 100 and the compensation motor 500 are locked to eliminate the aforementioned gap A.

[0227] In this embodiment, a protrusion can be added to the stop groove 610a to increase the structural strength of the stop groove 610a area. A hollow portion 620a can be provided between these protrusions as a weight-reducing groove.

[0228] The undescribed parts of this embodiment are the same as those of embodiment 1.

[0229] Example 10

[0230] This embodiment differs from the first embodiment in that, as shown in Figures 50 to 54 , a transmission frame 600b is added. The transmission frame 600b is fixedly mounted on the movable plate 300 and rotates synchronously with the movable plate 300. The limiting mechanism includes a protruding shaft 120 provided on the output shaft of the drive motor 100 and at least one protruding portion 610b provided on the circumference of the transmission frame 600b, having a central angle greater than 0° and less than 360°. For example, the central angle of the protruding portion 610b is 90°, 180°, or 270°.

[0231] The driving motor 100 is mounted on the fixed plate 200 , and the annular rack 400 is mounted on the transmission frame 600 b (of course, it can also be mounted on the moving plate 300 ).

[0232] If there is one protrusion 610b, a recessed portion 620b is provided between two ends of the protrusion 610b. If there are two or more protrusions 610b, a recessed portion 620b is provided between adjacent protrusions 610b.

[0233] The top surface of the protruding shaft 120 is lower than the lower side of the top portion of the protruding portion 610b and higher than the upper side of the bottom portion of the recessed portion 620b, so that the protruding shaft 120 can move in the cavity below the protruding portion 610b and stop moving when encountering either end of the recessed portion 620b.

[0234] The protruding shaft 120 extends into the cavity below the protruding portion 610b and can move in the cavity. When the protruding shaft 120 moves to the position of the recessed portions 620b at both ends of the cavity below the protruding portion 610b, the transmission frame 600b and the movable plate 300 are restricted from rotating, causing the drive motor 100 to be blocked, thereby eliminating the aforementioned gap A.

[0235] In this embodiment, if only recessed portions 620b are provided at both circumferential ends of the protrusion 610b to restrict the rotation of the movable plate 300 and to stall the drive motor 100, the compensation motor 500 and the dial 510 in embodiment 1 can be eliminated.

[0236] In this embodiment, if it is also necessary to restrict the rotation of the movable disk 300 at any position in the protrusion 510b and the drive motor 100 to form a stall to eliminate the aforementioned gap A, the compensation motor 500 and the dial wheel 510 are retained. Like Example 1, the movable disk 300 can be restricted from rotating at any position in the protrusion 610b, so that the drive motor 100 and the compensation motor 500 are stalled to eliminate the aforementioned gap A.

[0237] The undescribed parts of this embodiment are the same as those of embodiment 1.

[0238] Example 11

[0239] The difference between this embodiment and embodiment 1 is that: referring to Figures 55 to 58, a transmission frame 600c is added, the transmission frame 600c is fixedly mounted on the movable plate 300 and rotates synchronously with the movable plate 300, and the limiting mechanism includes a cam 120 arranged on the output shaft of the drive motor 100, a protrusion 610c arranged on the circumference of the transmission frame 600c, and at least one stop block 611c arranged on the protrusion 610c at any position between 0° and 360°, for example, at 90°, 180°, or 270°.

[0240] The driving motor 100 is mounted on the fixed plate 200 , and the annular rack 400 is mounted on the transmission frame 600 c (of course, it can also be mounted on the moving plate 300 ).

[0241] The top surface of the protruding shaft 120 is lower than the lower side surface of the top part of the protruding portion 610c and higher than the bottom surface of the stopper 611c, so that the protruding shaft 120 can move in the cavity below the protruding portion 610c and stop moving when it encounters the end of the stopper 611c.

[0242] The protruding shaft 120 extends into the cavity below the protruding portion 610c and can move in the cavity. When the protruding shaft 120 moves to the position of the stop block 611c in the cavity below the protruding portion 610c, the transmission frame 600c and the movable plate 300 are restricted from rotating, causing the drive motor 100 to be blocked, eliminating the aforementioned gap A.

[0243] In this embodiment, if it is only necessary to set a stopper 611c at any position on the protrusion 610c to restrict the rotation of the movable plate 300 and to stall the drive motor 100, the compensation motor 500 and the dial 510 in embodiment 1 can be eliminated.

[0244] In this embodiment, if it is necessary to restrict the rotation of the movable disk 300 and the drive motor 100 at any other position in the protrusion 510b to eliminate the aforementioned gap A, the compensation motor 500 and the dial 510 are retained. Like Example 1, the movable disk 300 can be restricted from rotating at any position in the protrusion 610b, so that the drive motor 100 and the compensation motor 500 are blocked to eliminate the gap A.

[0245] The undescribed parts of this embodiment are the same as those of embodiment 1.

[0246] Example 12

[0247] The difference between this embodiment and embodiment 10 is that, referring to Figures 59 to 61 , an arc-shaped weight-reducing groove 611b is provided on the raised portion 610b.

[0248] In this embodiment, an arc-shaped weight-reducing groove 611 b is provided on the protrusion 610 b , thereby reducing the weight of the transmission frame 600 b .

[0249] The rest of the description of this embodiment is the same as that of embodiment 10.

[0250] Example 13

[0251] The difference between this embodiment and embodiment 10 is that, referring to FIG62 , an arc-shaped weight-reducing groove 621 b is also provided on the recessed portion 620 b to further reduce the weight of the transmission frame 600 b.

[0252] The rest of the description of this embodiment is the same as that of embodiment 10.

[0253] Example 14

[0254] This embodiment differs from Example 1 in that a locking mechanism is added. Referring to Figures 63 to 65 , the locking mechanism shown includes a vertical latch locking mechanism 700 mounted on the rotating disk 300 of the rotating device, a locking hole 210 defined in the surface of the fixed disk 200 of the rotating device, and two through-holes 310 defined side by side in the rotating disk 300. The locking hole 210 is a waist-shaped hole aligned with the two through-holes 310.

[0255] A climbing slope 220 and a top slope 230 are respectively provided on both sides of the locking hole 210 on the surface of the fixed plate 200 along the rotation direction of the movable plate 300 . The locking hole 210 is located at the highest position of the climbing slope 220 and the top slope 230 .

[0256] The vertical latch locking mechanism 700 includes a locking pin bracket 710 , two locking pins 720 , 730 , two locking pin return springs 740 , 750 , a lock mounting bracket 760 and an unlocking bracket 770 .

[0257] The locking pin bracket 710 has a top 711 and four side portions 712 (the aforementioned first side portion), 713 (the aforementioned second side portion), 714 (the aforementioned third side portion), and 715 (the aforementioned fourth side portion). Side portions 712 and 713 are formed by bending downward from opposite sides of the top 711 and are symmetrically located on either side of the top 711. Side portions 714 and 715 are formed by bending forward from opposite sides of the side portion 713 and are welded to the side portion 712. Two through-holes 711a and 711b are defined in the top 711 for the second ends 722 and 732 of the two locking pins 720 and 730 to pass through. A locking pin silencer bushing 711c and 711d is mounted in each through-hole 711a and 711b.

[0258] Two locking ears 712a and 712b (the aforementioned second locking ears) are symmetrically provided on the side portion 712 of the locking pin bracket 710, and a reamed hole 712aa and 712ba is provided in each of the locking ears 712a and 712b.

[0259] A bolt hole 761 , 762 is respectively provided at both ends of the lock mounting bracket 760 , and two lock pin holes 763 , 764 are provided side by side in the middle of the lock mounting bracket 760 .

[0260] Two hinge ears 771 and 772 (the aforementioned first hinge ears) are symmetrically arranged on the unlocking bracket 770, and a hinge hole 771a and 772a (the aforementioned first hinge hole) is provided in each hinge ear 771 and 772, and a fixing pin bushing 773 and 774 is installed in each hinge hole 771a and 772a.

[0261] The unlocking bracket 770 is provided with an unlocking portion 775 , and two locking pin notches 775 a and 775 b are arranged side by side on the unlocking portion 775 . In addition, the unlocking bracket 770 is provided with an unlocking operation portion 776 .

[0262] The first ends 721, 731 of the two locking pins 720, 730 are conical to achieve gapless locking. A convex ring 723, 733 is provided in the middle of each locking pin 720, 730.

[0263] During assembly, first put the locking pin return springs 740 and 750 on the second ends 722 and 732 of the two locking pins 720 and 730, and then pass the second ends 722 and 732 of the two locking pins 720 and 730 from bottom to top through the locking pin silencer bushings 711c and 711d. At this time, the lower ends of the two locking pin return springs 740 and 750 respectively rest on the convex rings 723 and 733 of the two locking pins 720 and 730, and the upper ends rest on the top 711 of the locking pin bracket 710.

[0264] Next, the two locking pin holes 763 and 764 of the lock mounting bracket 760 are respectively inserted into the first ends 721 and 731 of the two locking pins 720 and 730, and the two locking pin holes 763 and 764 of the lock mounting bracket 760 are aligned with the two through-holes 711a and 711b on the top 211 of the locking pin bracket 710. The bottoms of the side portions 712, 713, 714, and 715 of the locking pin bracket 710 are then welded to the upper surface of the lock mounting bracket 760, leaving a gap 712c between the bottom of the side portion 712 of the locking pin bracket 710 and the upper surface of the lock mounting bracket 760.

[0265] Then, the unlocking part 775 of the unlocking bracket 770 is inserted into the locking pin bracket 710 through the gap between the bottom of the side 712 of the locking pin bracket 710 and the upper surface of the lock mounting bracket 760, and the two locking pin notches 775a and 775b on the unlocking part 775 are inserted into the position below the convex rings 723 and 733 on the corresponding locking pins 720 and 730, and the upper surface of the unlocking part 775 is in contact with the lower surface of the convex rings 723 and 733, so that the unlocking bracket 770 is driven to connect with the two locking pins 720 and 730, driving the locking pins 720 and 730 to unlock.

[0266] At the same time, the two hinge ears 771 and 772 of the unlocking bracket 770 are inserted between the two locking ears 712a and 712b on the side 712 of the locking pin bracket 710, and the hinge holes 771a and 772a on the two hinge ears 771 and 772 are aligned one by one with the two locking ears 712a and 712b on the side 712 of the locking pin bracket 710.

[0267] Then, the unlocking handle fixing pin 779 is passed through the reamed hole on the locking ear 712b on the side 712 of the locking pin bracket 710, the reamed hole 772a with the fixing pin bushing 774 on the hinge ear 772 of the unlocking bracket 770, the reamed hole 771a with the fixing pin bushing 773 on the hinge ear 771 of the unlocking bracket 770, and the reamed hole on the locking ear 712a on the side 712 of the locking pin bracket 710, and then the two ends of the unlocking handle fixing pin 779 are anchored to the locking ears 712a and 712b on the side 712 of the locking pin bracket 710, so that the unlocking bracket 770 is hinged to the locking pin bracket 710.

[0268] Because the two locking pins 720 and 730 are vertically movably mounted on the locking pin bracket 710, the unlocking operating portion 776 can be operated to cause the unlocking bracket 770 to rotate about the unlocking handle fixing pin 779. When the unlocking operating portion 776 is operated to rotate, the unlocking portion 775 drives the locking pins 720 and 730 upward via the protruding rings 723 and 733 on the locking pins 720 and 730, compressing the locking pin return springs 740 and 750 to unlock the door. When the unlocking operating portion 776 is released, the locking pins 720 and 730 move downward to return to their original position, with the two locking pin return springs 740 and 750 no longer constrained. At the same time, the protruding rings 723 and 733 on the locking pins 720 and 730 and the unlocking portion 775 drive the unlocking bracket 770 to return to its original position.

[0269] 66 to 72 , the vertical latch locking mechanism 700 is mounted on the movable disk 300 as follows: two bolts 320 are anchored on the movable disk 300, the bolt holes 761 and 762 at both ends of the lock mounting bracket 760 are placed on the two bolts 320, and the two lock pin holes 763 and 764 on the lock mounting bracket 760 are aligned one by one with the two through holes 310 on the movable disk 150, the first ends 721 and 731 of the two lock pins 720 and 730 pass through the two through holes 310 on the movable disk 300, and finally are locked with nuts 330.

[0270] When the vertical latch locking mechanism 700 is installed on the movable disk 300, it can be installed with the unlocking operating part 776 facing the inner side of the movable disk 300 as shown in Figures 67 to 69, or with the unlocking operating part 776 facing the outer side of the movable disk 300 as shown in Figures 70 to 72.

[0271] 63 to 72 and 74a to 74g, an unlocking cable lug 777 is provided on the unlocking operation portion 776, and one end of the unlocking cable 800 is connected to the unlocking cable lug 777, so that the unlocking bracket 770 can be driven to flip through the unlocking cable 800 to achieve unlocking.

[0272] 74a to 74g , the unlocking process of the vertical latch locking mechanism 700 is as follows:

[0273] The unlocking cable 800 drives the unlocking bracket 770 to flip around the unlocking handle fixing pin 779, and the unlocking portion 775 drives the locking pins 720 and 730 to move upward through the protruding rings 723 and 733 on the locking pins 720 and 730, and exit the lock hole 111 to achieve unlocking.

[0274] Referring to Figures 73a to 73d, when the vertical latch locking mechanism 700 rotates with the movable disk 300 to the ready-to-lock position, the first ends 721 and 731 of the two locking pins 720 and 730 encounter the ramp 220 of the fixed disk 200. The ramp 220 pushes the two locking pins 720 and 730 upward, compressing the locking pin return springs 740 and 750. When the two locking pins 720 and 730 reach the top ramp 230 and the lock hole 210, the top ramp 230 loses its support for the two locking pins 720 and 730. Consequently, the two locking pins 720 and 730 move downward under the restoring action of the locking pin return springs 740 and 750, inserting into the lock hole 210 and locking.

[0275] Example 15

[0276] 75, 76, and 77a to 77f, there is only one locking pin, namely, the locking pin 720; only one through-hole 711a is provided on the top 711 of the locking pin bracket 710; only one locking pin notch 775a is provided on the unlocking portion 775 of the unlocking bracket 770; and only one through-hole 310 is provided on the movable disk 300; the locking hole 210 is a round hole; the lock mounting bracket 760, the locking pin return spring 750, and the locking pin silencer bushing 711d are eliminated; the ends of the top 711 of the locking pin bracket 710 are bent downward and outward to form two fixing ears 711e and 711f; bolt holes 761a and 762a are provided on the fixing ears 711e and 711f, respectively. During installation, the bolt holes 761a and 762a are fitted over the two bolts 320 and tightened with nuts 330.

[0277] The rest of this embodiment is the same as that of embodiment 13, and the unlocking principle and locking principle are also the same as those of embodiment 13.

[0278] Example 16

[0279] The difference between this embodiment and embodiment 14 is that: referring to Figures 78a to 78i, an unlocking pin 778 is installed on the unlocking operating part 776 and also includes an unlocking handle 900, which is hinged on the movable disk 300; an unlocking groove 910 is provided on the unlocking handle 900, and the unlocking groove 910 has an arc-shaped groove edge 911; the unlocking pin 778 is inserted into the unlocking groove 910 and contacts the arc-shaped groove edge 911; when the unlocking handle 900 is rotated, the unlocking handle 900 drives the unlocking pin 778 to move through the arc-shaped groove edge 911, driving the unlocking bracket to flip around the unlocking handle fixing pin 779, and the unlocking part 775 drives the locking pins 720 and 730 to move upward through the convex rings 723 and 733 on the locking pins 720 and 730, and exit the lock hole 210 to achieve unlocking.

[0280] Example 17

[0281] The difference between this embodiment and embodiment 14, 15 or 16 is that, referring to Figures 79 and 80, a locking mechanism and a rotating frame 600d that rotates following the moving plate 300 are added.

[0282] A notch 610d is provided on the rotating frame 600d, and the locking mechanism includes a vertical latch locking mechanism 700 installed on the rotating frame 600d at a position corresponding to the notch 610d, a locking hole 210 or two locking holes 210 opened on the surface of the fixed plate 200, and a through hole 310 or two through holes 310 opened side by side on the movable plate 300.

[0283] When locked, one locking pin 720 or two locking pins 720, 730 in the vertical latch locking mechanism 700 pass through one through hole 310 or two through holes 310 and are inserted into one locking hole 210 or two locking holes 210. When unlocked, one locking pin 720 or two locking pins 720, 730 exit one through hole 310 or two through holes 310 and one locking hole 210 or two locking holes 210.

[0284] The rest of this embodiment is the same as that of Embodiment 14, 15 or 16.

[0285] In order to facilitate understanding of the technical solutions described in each embodiment, the following Table 1 briefly lists the technical features of the technical solutions of each embodiment to correspond to the description of the embodiment.

[0286] Table 1

[0287] As used in this specification, the singular forms "a," "an," "said," and "the" include the plural forms unless otherwise expressly stated. The terms "include," "comprise," and "contain" as used in this specification indicate the presence of the claimed features, but do not exclude the presence of one or more additional features. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0288] In the specification, when an element is referred to as being “on,” “fixed” to, “connected to,” or “engaged to,” etc., another element, the element may be directly on, fixed to, connected to, engaged to, or in contact with the other element, or intervening elements may be present. In the specification, when a feature is arranged “adjacent” to another feature, it may mean that the feature has a portion overlapping with the adjacent feature or a portion located above or below the adjacent feature.

Claims

1. Rotating device, comprising: Set the plate; A moving plate rotatably arranged on a fixed plate via rolling bodies; A driving device for driving the movable plate to rotate relative to the fixed plate; The driving device drives the movable plate to rotate relative to the fixed plate through a gear pair; the characteristic is that the rotating device also includes: At least one limiting mechanism for limiting the rotation of the moving plate, when the driving device drives the moving plate to stop at any position, the limiting mechanism limits the rotation of the moving plate, so that the driving device is locked to eliminate the gap between the teeth in the gear pair.

2. The rotating device according to claim 1, characterized in that: The driving device comprises a driving motor; the gear pair comprises a driving rack fixed on a moving plate or a fixed plate, and a driving gear fixed on an output shaft of the driving motor.

3. The rotating device according to claim 2, characterized in that: The limiting mechanism includes a compensation motor and at least one shifting tooth fixed on the output shaft of the compensation motor; when the driving motor drives the movable plate to rotate through the gear pair, the shifting tooth does not mesh with the driving rack; When the driving motor drives the movable plate to stop at any position, the compensation motor rotates in the direction opposite to the driving direction of the movable plate, drives the shifting tooth to rotate to an engagement position, engages with the driving rack, and limits the rotation of the movable plate.

4. The rotating device according to claim 3, characterized in that: When the shifting teeth are meshed with the driving rack, the compensation motor is also blocked to eliminate the gap between the shifting teeth and the driving rack, and the driving device stops rotating at this time.

5. The rotating device according to claim 3, characterized in that: A paddle wheel is arranged on the output shaft of the compensation motor, and at least one paddle tooth is circumferentially arranged on the paddle wheel; when the moving plate rotates normally, the driving rack does not contact the paddle wheel under normal circumstances.

6. The rotating device according to claim 3, characterized in that: The drive motor and the compensation motor are circumferentially arranged in the periphery or inner hole of the drive rack.

7. The rotating device according to claim 6, characterized in that: The driving motor and the compensating motor are mounted on the fixed plate, and the driving rack is mounted on the moving plate; or the driving motor and the compensating motor are mounted on the moving plate, and the driving rack is mounted on the fixed plate.

8. The rotating device according to claim 7, characterized in that: With respect to the solution in which the driving motor and the compensating motor are installed on the fixed plate, and the driving rack is installed on the moving plate, the rotating device further comprises a transmission member that rotates synchronously with the moving plate, and the driving rack is fixed on the transmission member.

9. The rotating device according to any one of claims 3 to 8, characterized in that: The driving rack is a first arc-shaped rack or an annular rack.

10. The rotating device according to claim 9, characterized in that: The central angle of the first arc-shaped rack is any angle greater than 0° and less than 360°.

11. The rotating device according to claim 10, characterized in that: The central angle of the first arc-shaped rack is 90°, 180° or 270°.

12. The rotating device according to claim 2 or 3, characterized in that: The driving rack is a second arc-shaped rack, the limiting mechanism includes a first stop point structure arranged at both ends of the second arc-shaped rack, the driving device includes a driving motor and a driving gear fixed to the output shaft of the driving motor, the driving gear is meshed with the second arc-shaped rack, and drives the moving plate to rotate relative to the fixed plate; When the driving motor drives the driving rack to rotate to the first gear point structure position, the driving gear engages with the first gear point structure, so that the driving motor is locked.

13. The rotating device according to claim 12, characterized in that: The central angle of the second arc-shaped rack is any angle greater than 0° and less than 360°.

14. The rotating device according to claim 13, characterized in that The central angle of the second arc-shaped rack is 90°, 180° or 270°.

15. The rotating device according to claim 12, characterized in that: The driving motor is mounted on the fixed plate, and the second arc-shaped rack is mounted on the movable plate; or the driving motor is mounted on the movable plate, and the second arc-shaped rack is mounted on the fixed plate.

16. The rotating device according to claim 15, characterized in that With respect to the solution in which the driving motor is mounted on the fixed plate and the second arc-shaped rack is mounted on the moving plate, the rotating device further comprises a transmission member that rotates synchronously with the moving plate, and the second arc-shaped rack is fixed on the transmission member.

17. The rotating device according to claim 2 or 3, characterized in that: The driving rack is an annular rack, and the limiting mechanism includes a compensation rack, which is fixed together with the driving rack cocircumferentially, and the driving gear is meshed with the driving rack and the compensation rack at the same time; the central angle of the compensation rack is any angle greater than 0° and less than 360°; a second stop point structure is respectively provided at both ends of the compensation rack; when the driving motor drives the driving rack and the compensation rack to rotate to the position of the second stop point structure, the driving gear engages with the second stop point structure, so that the driving motor is stalled.

18. The rotating device according to claim 17, characterized in that The central angle of the compensation rack is 90°, 180° or 270°.

19. The rotating device according to claim 17, characterized in that: The driving motor is mounted on the fixed plate, and the driving rack and the compensating rack are mounted on the moving plate; or the driving motor is mounted on the moving plate, and the driving rack and the compensating rack are mounted on the fixed plate.

20. The rotating device according to claim 19, characterized in that With respect to the solution in which the driving motor is installed on the fixed plate, and the driving rack and the compensating rack are installed on the moving plate, the rotating device further includes a transmission member that rotates synchronously with the moving plate, and the driving rack and the compensating rack are fixed on the transmission member.

21. The rotating device according to claim 2 or 3, characterized in that: The limiting mechanism includes a thickened portion arranged at at least one angular position of the driving rack, and a third gear point structure is arranged on the thickened portion; when the driving motor drives the driving rack to rotate to the position of the third gear point structure, the driving gear engages with the third gear point structure, so that the driving motor is blocked.

22. The rotating device according to claim 21, characterized in that The angular position is a 0° position and / or a 270° position.

23. The rotating device according to claim 22, characterized in that The driving motor is mounted on the fixed plate, and the driving rack is mounted on the movable plate; or the driving motor is mounted on the movable plate, and the driving rack is mounted on the fixed plate.

24. The rotating device according to claim 23, characterized in that With respect to the solution in which the driving motor is mounted on the fixed plate and the driving rack is mounted on the moving plate, the rotating device further comprises a transmission member that rotates synchronously with the moving plate, and the driving rack is fixed on the transmission member.

25. The rotating device according to claim 2 or 3, characterized in that: The rotating device includes a transmission member that rotates synchronously with the moving disk, and the limiting mechanism includes a cam arranged on the output shaft of the driving motor and a stop groove circumferentially arranged on the transmission member with a central angle greater than 0° and less than 360°; the driving motor is installed on the fixed disk, and the driving rack is installed on the transmission member or the moving disk; a stop position is respectively provided at both ends of the stop groove; the cam passes through the stop groove and can move in the stop groove; when the cam moves to the stop positions at both ends of the stop groove, the transmission member, the driving rack and the moving disk are restricted from rotating, so that the driving motor is blocked.

26. The rotating device according to claim 2 or 3, characterized in that: The rotating device includes a transmission member that rotates synchronously with the moving disk, the limiting mechanism includes a cam arranged on the output shaft of the driving motor, a protrusion arranged circumferentially on the transmission member, and at least one stopper arranged at any position in the protrusion, the driving motor is mounted on the fixed disk, and the driving rack is mounted on the transmission member or the moving disk; the cam extends into a cavity below the protrusion and can move in the cavity, and when the cam moves to the position of the stopper, the transmission member, the driving rack and the moving disk are restricted from rotating, so that the driving motor is blocked.

27. The rotating device according to claim 2 or 3, characterized in that: The rotating device includes a transmission member that rotates synchronously with the moving disk, and the limiting mechanism includes a convex shaft arranged on the output shaft of the driving motor and at least one protrusion circumferentially arranged on the driving member with a central angle greater than 0° and less than 360°, the driving motor is mounted on the fixed disk, and the driving rack is mounted on the transmission member or the moving disk; a recessed portion is arranged between the two ends of the protruding portion or between adjacent protruding portions, the convex shaft extends into the cavity below the protruding portion and can move in the cavity, and when the convex shaft moves to the position of the recessed portion at both ends of the cavity below the protruding portion, the transmission member, the driving rack and the moving disk are restricted from rotating, so that the driving motor is blocked.

28. The rotating device according to claim 27, characterized in that The top surface of the protruding shaft is lower than the lower side surface of the top portion of the protruding part and higher than the upper side surface of the bottom portion of the recessed part.

29. The rotating device according to claim 27, characterized in that The central angle of the protrusion is 90°, 180° or 270°.

30. The rotating device according to claim 26 or 27, characterized in that A first arc-shaped weight-reducing groove is provided on the raised portion.

31. The rotating device according to claim 27, characterized in that A second arc-shaped weight-reducing groove is provided on the recessed portion.

32. The rotating device according to claim 2 or 3, characterized in that: The rotating device also includes: a locking mechanism installed on the movable plate or the fixed plate; the locking mechanism can lock the movable plate and the fixed plate together at at least one position and limit the rotation of the movable plate relative to the fixed plate, so that the drive motor is blocked.

33. The rotating device according to claim 32, characterized in that The rotating device also includes a transmission member that rotates synchronously with the moving plate; the locking mechanism is installed on the transmission member or the moving plate or the fixed plate, and the locking mechanism can lock the transmission member and / or the moving plate with the fixed plate at at least one position, and limit the rotation of the transmission member and the moving plate relative to the fixed plate, so that the drive motor is blocked.

34. The rotating device according to claim 33, characterized in that At least one through hole is provided on the moving plate or the transmission member, and at least one locking hole is provided on the fixed plate. The locking mechanism includes at least one locking pin, which can pass through the through hole and the locking hole to lock the transmission member and / or the moving plate with the fixed plate.

35. The rotating device according to claim 34, characterized in that The locking mechanism is arranged on any one of the transmission member, the moving plate and the fixed plate.

36. The rotating device according to claim 35, characterized in that The locking mechanism also includes: A locking pin bracket is correspondingly fixed on any one of the transmission member, the moving plate and the fixed plate; at least one locking pin is vertically or horizontally movably arranged on the locking pin bracket.

37. The rotating device according to claim 36, characterized in that The first end of the locking pin to be engaged in the locking hole is conical to achieve gap-free locking.

38. The rotating device according to claim 37, characterized in that The locking pin bracket has a top and four side portions, wherein the four side portions are a first side portion, a second side portion, a third side portion and a fourth side portion, and at least one through hole is provided at the top, and the through hole is used for allowing the second end of the locking pin opposite to the first end to pass through.

39. The rotating device according to claim 38, characterized in that The first side portion and the second side portion are formed by bending the first side and the second side of the top downward and are symmetrically located on the first side and the second side of the top. The third side portion and the fourth side portion are formed by bending both sides of the second side portion forward and are welded to the first side portion.

40. The rotating device according to claim 38, characterized in that A locking pin noise-absorbing bushing is installed in the corresponding through-hole, and the second end of the locking pin passes through the locking pin noise-absorbing bushing.

41. The rotating device according to claim 40, characterized in that The locking mechanism also includes: An unlocking bracket is hinged on the locking pin bracket, the unlocking bracket is drivingly connected to the locking pin and drives the locking pin to unlock.

42. The rotating device according to claim 41, characterized in that The unlocking bracket is hinged on the locking pin bracket through an unlocking handle fixing pin.

43. The rotating device according to claim 42, characterized in that Two first hinge ears are arranged on the unlocking bracket, and a first hinge hole is arranged in each of the first hinge ears.

44. The rotating device according to claim 43, characterized in that A first fixing pin bushing is installed in each first reaming hole, and two ends of the fixing pin of the unlocking handle pass through the first fixing pin bushings respectively.

45. The rotating device according to claim 43, characterized in that Two second locking ears are arranged on the first side portion of the locking pin bracket, and a second hinge hole is arranged in each second hinge ear. Both ends of the fixing pin of the unlocking handle pass through the second hinge holes and are anchored respectively.

46. ​​The rotating device according to claim 45, characterized in that A second fixing pin bushing is installed in each second reaming hole, and two ends of the fixing pin of the unlocking handle pass through the second fixing pin bushing respectively.

47. The rotating device according to claim 41, characterized in that An unlocking portion is provided on the unlocking bracket, at least one locking pin slot is provided on the unlocking portion, and a convex ring is provided at the middle position of the corresponding locking pin. The unlocking portion can be inserted into the locking pin bracket from the bottom of the first side portion of the locking pin bracket, and the corresponding locking pin slot on the unlocking portion can be inserted into the position below the convex ring on the corresponding locking pin and make the upper surface of the unlocking portion contact with the lower surface of the convex ring, and the unlocking bracket drives the locking pin to move upward through the convex ring to unlock.

48. The rotating device according to claim 47, characterized in that A locking pin return spring is sleeved on the second end of the corresponding locking pin, the lower end of the locking pin return spring abuts against the convex ring, and the upper end of the locking pin return spring abuts against the lower side of the top of the locking pin bracket.

49. The rotating device according to claim 48, characterized in that The rotating device also includes a lock mounting bracket, which is mounted on any one of the transmission member, the moving plate and the fixed plate by means of fasteners, and the bottoms of the first side, the second side, the third side and the fourth side of the locking pin bracket are welded to the lock mounting bracket.

50. The rotating device according to claim 49, characterized in that A gap is left between the bottom of the first side portion and the upper surface of the lock mounting bracket, and the unlocking portion can be inserted into the locking pin bracket through the gap.

51. The rotating device according to claim 49, characterized in that At least one lock pin hole is provided on the lock mounting bracket, the lock pin hole is aligned with the through hole on the movable disk, and the first end of the lock pin can pass through the lock pin hole and the through hole.

52. The rotating device according to claim 49, characterized in that An unlocking operation portion is arranged on the unlocking bracket, and the unlocking bracket can be driven to flip by operating the unlocking operation portion to achieve unlocking.

53. The rotating device according to claim 52, characterized in that When the locking mechanism is installed on any one of the transmission member, the movable plate and the fixed plate, the locking mechanism can be installed with the unlocking operating part facing the outer side of the movable plate, or with the unlocking operating part facing the inner side of the movable plate.

54. The rotating device according to claim 52, characterized in that An unlocking cable hanging ear is arranged on the unlocking operation part, and one end of the unlocking cable is connected to the unlocking cable hanging ear.

55. The rotating device according to claim 52, characterized in that An unlocking pin is installed on the unlocking operation part and also includes an unlocking handle, which is hinged on the moving plate; an unlocking groove is arranged on the unlocking handle, and the unlocking groove has an arc-shaped groove edge; the unlocking pin is inserted into the unlocking groove and contacts with the arc-shaped groove edge; when the unlocking handle is rotated, the unlocking handle drives the unlocking pin to move through the arc-shaped groove edge, and drives the unlocking bracket to unlock.

56. The rotating device according to claim 34, characterized in that Climbing ramps are respectively arranged on both sides of the locking hole on the disk surface of the fixed disk along the rotation direction of the movable disk, and the locking hole is located at the level of the highest position of the climbing ramp.

57. The rotating device according to claim 34, characterized in that Two locking pins are provided, and two through holes are provided accordingly, and the locking holes are waist-shaped holes.

58. The rotating device according to claim 57, characterized in that The two locking pins are arranged in parallel and can pass through the two through holes respectively and be inserted into the locking hole for locking.

59. The rotating device according to claim 38, characterized in that Two perforations are provided at the top.

60. The rotating device according to claim 47, characterized in that Two locking pin notches are arranged side by side on the unlocking portion.

61. The rotating device according to claim 51, characterized in that Two lock pin holes are arranged side by side on the lock mounting bracket, and the two lock pin holes are aligned one by one with the corresponding through holes on the moving disk.

62. The rotating device according to claim 26, characterized in that The top surface of the protruding shaft is lower than the lower side surface of the top portion of the protruding part and higher than the bottom surface of the stopper.

63. The rotating device according to claim 26, characterized in that The stopper is arranged at a position of 90°, 180° or 270°.

64. A seat, characterized in that A rotating device comprising the rotating device described in any one of claims 1 to 63.

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