Automobile seat disc type rotating device

Abstract

The invention discloses a disc type rotating device of an automobile seat, and belongs to the technical field of automobile seats. Comprising a lower chassis; the group of lower gaskets are arranged on the upward side of the lower chassis; the rotating disc is supported on the group of lower gaskets and is provided with a rotating disc centering mechanism abdicating hole; the rotating disc centering mechanism is fixed with the lower chassis; the rotating disc driving mechanism is used for driving the rotating disc to rotate; the structure is characterized in that a gear ring plate is directly formed in the middle area of the lower chassis, a lower chassis center hole is formed in the center area of the gear ring plate, and a gear ring is formed on the wall body of the side, facing the lower chassis center hole, of the gear ring plate; the rotating disc centering mechanism is fixed to the lower chassis, a rotating disc locking and unlocking executing mechanism is arranged on the rotating disc, and a lock shaft traction connecting mechanism is arranged on the rotating disc driving mechanism. The device has the advantages of compact structure and convenience in manufacturing and assembling; the stable effect tending to be gapless when the rotating disc rotates can be fully guaranteed; the safety is embodied; the requirements for flattening and light weight can be met, and the adaptability to different vehicles is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile seats, and in particular relates to a disc-type rotating device for an automobile seat. Background Art

[0002] The above-mentioned car seat disc rotating device can be referred to as a car seat rotating device, which has the following advantages but is not limited to: improve comfort, because it can be adjusted according to the height and body shape of the passengers, providing a more comfortable riding experience, for example, the passengers can adjust the seat to the position that best suits them to obtain a better field of view and operational convenience; meet the needs of application scenarios, the seat rotating device can rotate the seat to facilitate the requirements of face-to-face business meetings on the vehicle; facilitate getting on and off the vehicle, for example, the seat can be rotated to face the door to facilitate getting on and off the vehicle, which is particularly humane for passengers with limited mobility; increase safety, because the rotating device will consider safety in the structural design to ensure that the seat can remain stable during the rotation process and will not move suddenly due to external forces, which is very beneficial to the safety of passengers; it is conducive to forming a multi-person mode, for example, a five-person negotiation and entertainment mode with a small table in the middle can be created (non-rotating rear three-person seats, two rotating single seats in the front), etc. In short, rotatable car seats are generally popular in both business cars and family cars.

[0003] In the public Chinese patent documents, technical information related to the rotating device of the car seat can be seen, such as CN220429943U recommends "a rotating seat for a car" and CN222223952U provides "a rotating and locking mechanism for a car seat". A typical example is the "a rotating mechanism for a car seat" introduced in CN109017460A. This patent is proposed to address the shortcomings of rotating devices such as ball bearings. Specifically, in paragraph 0002 of its specification, there is the following evaluation: "The rotating function is realized by using components such as ball bearings. As the ball bearings roll, the seat may be longitudinally offset relative to the bottom plate of the car, which may cause the seat to collide with other parts in the car in serious cases."

[0004] The positive significance of the above-mentioned CN109017460A is as recorded in paragraph 0015 of the specification: "A nested and clamped structure is adopted between the upper rotating part and the lower fixed part. When the upper rotating disk rotates, the clamping disk is driven to rotate together. Since the clamping disk is limited by the fixed disk, no lateral deviation will occur." However, through the interpretation of the contents of the specification of this patent, it is found that it has the following shortcomings: since the fixed disk with an annular gear ring at the center position is fixed to the non-rotating lower chassis by fasteners distributed at intervals in the circumferential direction of the fixed disk, and since the clamping sleeve with a C-shaped or U-shaped cross-section is embedded in the accommodating space formed in the clamping disk in a state of clamping the edge of the fixed disk, the aforementioned fixed disk and the lower chassis form independent structural components, and the clamping sleeve and the fixed disk also form independent structural components, so the number of parts is large and the structure is small. The structure is loose, which is not conducive to manufacturing, assembly and economical. Since it is necessary to consider the two upper limit projections at the bottom of the upper rotating disk (which can be called "rotating disk") as the moving disk and the lower limit projection fixed on the upper surface of the lower chassis, and the buckle groove of the upper tensile fixing seat fixed on the lower surface of the upper rotating disk and the Z-shaped lower tensile fixing seat fixed on the lower chassis, the structural complexity of the upper rotating disk is significantly increased. The patent does not provide a technical inspiration for locking the upper rotating disk with the lower chassis as the fixed disk in the normal state when the rotating disk is not activated or not used, such as when the seat seat is facing the front of the vehicle's driving direction, so as to avoid the possibility of even a slight abnormal autonomous rotation that may cause fear to the passengers. Since the thickness of the entire mechanism is the sum of the thickness of the lower chassis, the clamping disk and the upper rotating disk, it is not flat and lightweight. In view of the above, it is necessary to make improvements, and the technical solution to be introduced below is produced in this context. Summary of the invention

[0005] The task of the present invention is to provide a car seat disc rotating device which helps to directly construct a gear ring on the lower chassis, thereby abandoning the clamping sleeve and significantly reducing the number of parts and components, embodying a compact structure, facilitating manufacturing and assembly, and embodying good economy; it is beneficial to abandon the rotation limit mechanism composed of upper and lower limit protrusions respectively arranged on the rotating plate and the lower chassis, thereby significantly reducing the stringent requirements on the rotating plate and the lower chassis structure and ensuring a smooth effect of almost no gap when the rotating plate rotates; it is beneficial to lock the rotating plate and the lower chassis in a non-use state to ensure safety and is easy to meet the requirements of flatness and lightweight to enhance the adaptability to different vehicles.

[0006] The task of the present invention is accomplished in this way. A car seat disc rotating device includes a lower chassis; a group of lower gaskets, which are arranged on the upper side of the lower chassis; a rotating disk, which is rotatably supported on the group of lower gaskets on the lower side, and a rotating disk centering mechanism clearance hole is formed at the central position of the rotating disk; a rotating disk centering mechanism, which is fixed to the lower chassis at a position corresponding to the rotation disk centering mechanism clearance hole and simultaneously limits the surrounding area of ​​the rotation disk centering mechanism clearance hole; a rotating disk driving mechanism for rotating the rotating disk, which is arranged on the upper side of the rotating disk; the characteristics are The invention relates to a method of according to claim 1, wherein: a gear ring plate is directly formed in the middle area of ​​the lower chassis, the central area of ​​the gear ring plate forms the lower chassis center hole of the lower chassis, a gear ring is formed on the wall of the gear ring plate facing the lower chassis center hole and in the circumferential direction of the hole wall of the lower chassis center hole, and the rotating disk driving mechanism is meshed with the gear ring; the rotating disk centering mechanism is fixed to the lower chassis at a position corresponding to the gear ring plate, a rotating disk locking and unlocking actuator for locking or unlocking the rotating disk and the lower chassis is arranged on the rotating disk, and a lock shaft traction connection mechanism is arranged on the rotating disk driving mechanism, and the lock shaft traction connection mechanism is connected to the rotating disk locking and unlocking actuator.

[0007] In a specific embodiment of the present invention, a lower gasket accommodating cavity which is recessed downward and has a width adapted to the width of a group of lower gaskets is formed in the circumferential direction of the lower chassis at a position corresponding to the group of lower gaskets on the upward side of the lower chassis, the group of lower gaskets are arranged in the lower gasket accommodating cavity, and at least one pair of lower gasket bosses which protrude from the surface of the lower gasket and are spaced from each other are formed on the upward side of the group of lower gaskets, the upper surfaces of the lower gasket bosses protrude out of the upper surface of the lower gasket accommodating cavity, the space between two adjacent lower gasket bosses constitutes a lower gasket recess, and the rotating disk is rotatably supported on the lower gasket bosses on the downward side; the group of lower gaskets are each C-shaped, and are composed of two, three or four pieces connected end to end to form an integral annular structure.

[0008] In another specific embodiment of the present invention, a lower chassis outer boss with a cross-sectional shape of a "︹" is formed on the upward side of the lower chassis and around the outer side of the lower gasket accommodating cavity; a certain center disk supporting cavity is formed on the upward side of the rotating disk and around the yield hole of the rotating disk centering mechanism, and dynamic disk seat fixing screws are arranged in a spaced state on the edge parts of the chassis, and in a state of use, the dynamic disk seat fixing screws are fixed to the car seat; the rotating disk centering mechanism fixed to the lower chassis at a position corresponding to the ring gear plate is supported on the bottom wall of the centering disk supporting cavity; the rotating disk driving mechanism together with the lock shaft traction connection mechanism are arranged on the rotating disk in a state of being suspended on the upward side of the rotating disk; the rotating disk locking and unlocking actuator locks or unlocks the lower chassis at a position corresponding to the lower chassis outer boss.

[0009] In another specific embodiment of the present invention, the rotating disk centering mechanism includes a certain center locking disk and a group of upper gaskets, the central position of the centering locking disk is formed with a certain center locking disk hole, and a certain center locking disk stack ring is formed on the side facing upward around the centering locking disk hole, and a centering locking disk fixing groove recessed in the surface of the centering locking disk is formed around the outer side of the centering locking disk stack ring, and a gear ring plate screw is arranged in a spaced state on the gear ring plate and at a position corresponding to the centering locking disk fixing groove, the upper end of the gear ring plate screw is inserted into the centering locking disk fixing groove through the gear ring plate screw hole provided on the groove bottom wall of the centering locking disk fixing groove and is locked by the gear ring plate screw locking nut located in the centering locking disk fixing groove The base of the gear ring plate screw is located on the downward side of the gear ring plate, and upper gasket embedding flange insertion holes equal to the number of a group of upper gaskets are arranged in pairs on the centering locking disk and located around the outer side of the centering locking disk fixing groove. The upper surfaces of a group of upper gaskets each constitute a pair of upper gasket embedding flanges, and the lower surfaces each constitute a pair of upper gasket supporting bosses, and an inclined rib is respectively formed at one end of a group of upper gaskets facing the centering locking disk fixing groove, the pair of upper gasket embedding flanges are embedded with the upper gasket embedding flange insertion holes, the pair of upper gasket supporting bosses are supported on the bottom wall of the centering disk supporting cavity, and the inclined rib is abutted against the outer wall of the centering locking disk fixing groove of the centering locking disk fixing groove.

[0010] In another specific embodiment of the present invention, a first fixing screw of a motor mounting frame and a second fixing screw of a motor mounting frame are arranged on the rotating disk, and the first and second fixing screws of the motor mounting frame are 180° apart from each other around the circumferential direction of the rotating disk; the rotating disk driving mechanism comprises a motor mounting frame, a rotating disk driving motor, a rotating disk driving reduction box, a reduction box fixing frame and a ring gear meshing gear, a left fixing ear of the motor mounting frame is extended from the left end of the motor mounting frame, and the first fixing screw of the motor mounting frame is fixed to the left fixing ear of the motor mounting frame, and a right fixing ear of the motor mounting frame is extended from the right end of the motor mounting frame, and the second fixing screw of the motor mounting frame is fixed to the right fixing ear of the motor mounting frame The fixing ear is fixed, and the middle part of the motor mounting frame corresponds to the top of the rotating disk in a vacant state, and the rotating disk driving motor is arranged in a horizontal state, and the rotating disk driving motor is connected to the rotating disk driving reduction box and is fixed to the reduction box fixing frame together with the rotating disk driving reduction box, and the reduction box fixing frame is fixed to the downward side of the motor mounting frame, and the ring gear meshing gear is fixed on the rotating disk driving reduction box shaft of the rotating disk driving reduction box and meshes with the ring gear at a position corresponding to the center hole of the lower chassis; the lock shaft traction connection mechanism connected to the rotating disk locking and unlocking actuator arranged on the rotating disk is arranged on the downward side of the left end of the motor mounting frame.

[0011] In another specific embodiment of the present invention, the lock shaft traction connection mechanism includes a zipper rope drum drive motor, a zipper rope drum and a zipper rope, the zipper rope drum drive motor is arranged in a horizontal state, the zipper rope drum drive motor is transmission-connected to the zipper rope drum and the zipper rope drum together with the zipper rope drum drive motor is fixed on the left end of the motor mounting frame facing downward, one end of the zipper rope facing the zipper rope drum is connected to the zipper rope drum, and one end of the zipper rope facing the rotating disk locking and unlocking actuator is connected to the rotating disk locking and unlocking actuator, wherein the zipper rope is movably arranged in a zipper rope outer sheath.

[0012] In a further specific embodiment of the present invention, the rotating disk drive motor and the zipper rope disk drive motor are motors with forward and reverse functions; a lead tube is fixed in a longitudinal cantilever state in the middle of the motor mounting seat, and a lead seat fixing flange is formed on the four edges of the bottom of the outer wall of the lead tube, and a lead seat is fixed on the lead seat fixing flange by a pair of lead seat fixing screws, the lead seat having a lead seat cavity corresponding to the lead tube cavity of the lead tube, and a sleeve hole is opened on the upward side of the lead seat and at a position corresponding to the rotating disk drive reducer shaft, and a sleeve is arranged in the sleeve hole, and the end of the rotating disk drive reducer shaft cooperates with the sleeve.

[0013] In a further specific embodiment of the present invention, a lock tongue hole is provided on the outer boss of the lower chassis and at a position corresponding to the rotating disk locking and unlocking actuator. When the rotating disk locking and unlocking actuator is in a state of matching with the lock tongue hole, the rotating disk and the lower chassis are locked to each other, and when the rotating disk locking and unlocking actuator is in a state of releasing the matching with the lock tongue hole, the rotating disk and the lower chassis are unlocked.

[0014] In yet another specific embodiment of the present invention, a pair of lock shaft support seats are formed on the rotating disk and at positions corresponding to the rotating disk locking and unlocking actuators, and the space between the pair of lock shaft support seats constitutes a lock tongue clearance cavity. When the rotating disk and the lower chassis are in a locked state, the lock tongue clearance cavity corresponds to the lock tongue hole; an anti-impact protection mechanism is arranged with the rotating disk and the lower chassis as carriers, and the number of the anti-impact protection mechanisms is at least a pair arranged at intervals and each includes a pull-down seat and an upper pull-up seat, and the pull-down seat is located at the outer edge of the lower chassis and is connected to the lower chassis by a pull-down seat screw. The lower chassis is fixed, the upper pull-up seat is located at the outer edge of the rotating disk and is fixed to the rotating disk by the upper pull-up seat screws, the upper and lower pull-up seats are restrained and cooperated with each other, and the cross-sectional shape of the lower pull-up seat is in the shape of a letter "]", while the cross-sectional shape of the upper pull-up seat is in the shape of a letter "L" and extends into the lower pull-down seat cavity of the lower pull-down seat; in a state of use, the lower pull-down seat screws are also fixed to the chassis fixing plate located below the lower chassis; chassis fixing plate fixing screws are also arranged at intervals on the lower chassis and located on the outer side of the outer boss of the lower chassis in the circumferential direction around the lower chassis, and the upper pull-up seat screws are also fixed to the car seat in a state of use.

[0015] In yet another specific embodiment of the present invention, the rotating disk locking and unlocking actuator includes a lock shaft, a lock shaft traction arm, a lock tongue, a reset torsion spring and an outer sheath fixing plate, the middle part of the lock shaft is placed on the pair of lock shaft support seats formed on the rotating disk, and the two ends of the lock shaft are rotatably supported on lock shaft pivot seats formed on the rotating disk and respectively located on both sides of the pair of lock shaft support seats, the lock shaft traction arm is sleeved on one end of the lock shaft facing the outer sheath fixing plate, and is limited by the traction arm limiting clamps arranged on the lock shaft and respectively located on both sides of the lock shaft traction arm, the zipper rope is fixed to the lock shaft traction arm at one end of the rotating disk locking and unlocking actuator, and the zipper rope outer sheath The lock tongue is fixed to an outer sheath fixing plate, and the outer sheath plate is fixed to an upward side of the rotating disk, the lock tongue has a lock tongue sleeve, the lock tongue sleeve is sleeved on the lock shaft at a position corresponding to the lock tongue yielding cavity and the lock tongue sleeve is limited by a limiting foot located on the lock shaft at a position corresponding to a limiting foot groove provided on the lock tongue sleeve, when the lock tongue is inserted into the lock tongue hole, the rotating disk is locked with the lower chassis, and when the lock tongue is withdrawn from the lock tongue hole, the rotating disk is released from the lock with the lower chassis, a reset torsion spring is sleeved on the lock shaft, a first torsion spring foot of the reset torsion spring abuts against a downward side of the rotating disk, and a second torsion spring foot of the reset torsion spring abuts against a torsion spring foot stop screw fixed on the lock shaft.

[0016] One of the technical effects of the technical solution provided by the present invention is that, since the gear ring plate is directly formed on the lower chassis, the clamping sleeve is omitted compared with the existing technology, so that the number of required parts is significantly reduced, which can not only embody a compact structure, but also be convenient for manufacturing and assembly and embody good economy; secondly, since the concentricity of the rotating disk and the lower chassis can be ensured by the rotating disk centering mechanism that is fixed to the lower chassis and simultaneously limits the surrounding area of ​​the rotating disk centering mechanism yielding hole of the rotating disk, the stringent manufacturing requirements for the rotating disk and the lower chassis structure can be significantly reduced, and the smooth effect of the rotating disk tending to be gapless when the rotating disk rotates can be fully guaranteed; thirdly, since a rotating disk locking and unlocking actuator and a lock shaft traction connection mechanism are added, the rotating disk and the lower chassis can be reliably locked when the rotating disk is in a non-rotating operating state, which embodies safety; fourthly, since the entire thickness is only the sum of the thickness of the lower chassis and the rotating disk, it can meet the requirements of flatness and lightweight, and can improve the adaptability to different vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of an embodiment of the present invention; Figure 2 for Figure 1 A bottom view of the rotating disk drive mechanism and the locking shaft traction connection mechanism shown; Figure 3 for Figure 1The detailed structural diagram of the lock shaft traction arm, the lock tongue and the reset torsion spring arranged on the rotating shaft of the rotating disk locking and unlocking actuator shown; Figure 4 for Figure 1 A cross-sectional view of the rotating disk and lower chassis is shown. DETAILED DESCRIPTION

[0018] In order to more clearly understand the technical essence and beneficial effects of the present invention, the applicant provides a detailed description in the form of embodiments below. However, the description of the embodiments is not a limitation of the present invention. Any equivalent changes made based on the concept of the present invention that are merely formal and not substantial should be regarded as within the scope of the technical solution of the present invention.

[0019] In the following description, all concepts related to up, down, left, right, front and back directions or orientations are based on Figure 1 The position state currently shown is a reference, and thus cannot be understood as a special limitation on the technical solution provided by the present invention.

[0020] See also Figure 1 , showing a lower chassis 1; showing a group of lower gaskets 2, which are arranged on the upper side of the lower chassis 1; showing a rotating disk 3, which is rotatably supported on the group of lower gaskets 2 on the lower side, and a rotating disk centering mechanism clearance hole 31 is formed at the central position of the rotating disk 3; showing a rotating disk centering mechanism 4, which is fixed to the aforementioned lower chassis 1 at a position corresponding to the aforementioned rotating disk centering mechanism clearance hole 31, and at the same time limits the surrounding area of ​​the rotating disk centering mechanism clearance hole 31; showing a rotating disk driving mechanism 5 for rotating the rotating disk 3, and the rotating disk driving mechanism 5 is arranged on the upper side of the rotating disk 3.

[0021] As the technical highlights of the technical solution provided by the present invention: a gear ring plate 11 is directly formed in the middle area of ​​the aforementioned lower chassis 1, and the central area of ​​the gear ring plate 11 constitutes the lower chassis center hole 12 of the lower chassis 1, and a gear ring 111 is formed on the wall of the gear ring plate 11 facing the lower chassis center hole 12 and around the circumferential direction of the hole wall of the lower chassis center hole 12, and the aforementioned rotating disk driving mechanism 5 is meshed with the gear ring 111; the aforementioned rotating disk centering mechanism 4 is fixed to the aforementioned lower chassis 1 at a position corresponding to the gear ring plate 11, and a rotating disk locking and unlocking actuator 6 for locking or unlocking the rotating disk 3 and the lower chassis 1 is arranged on the aforementioned rotating disk 3, and a lock shaft traction connection mechanism 7 is arranged on the aforementioned rotating disk driving mechanism 5, and the lock shaft traction connection mechanism 7 is connected to the aforementioned rotating disk locking and unlocking actuator 6.

[0022] See also Figure 4 And combined with Figure 1 , a lower gasket accommodating cavity 13 which is concave downward and has a width adapted to the width of a group of lower gaskets 2 is formed in the circumferential direction of the lower chassis 1 at the position corresponding to the aforementioned group of lower gaskets 2 on the upper side of the aforementioned lower chassis 1, and the aforementioned group of lower gaskets 2 are arranged in the lower gasket accommodating cavity 13, and a pair of lower gasket bosses 21 which protrude from the surface of the lower gasket 2 and are spaced from each other are formed on the upper side of the group of lower gaskets 2, the upper surface of the lower gasket bosses 21 protrudes out of the upper surface of the lower gasket accommodating cavity 13, and the space between two adjacent lower gasket bosses 21 constitutes a lower gasket groove 22, and the aforementioned rotating disk 3 is rotatably supported on the lower gasket bosses 21 on the lower side; in this embodiment, the aforementioned group of lower gaskets 2 are each C-shaped, and are formed into an integral annular structure by a number of four pieces connected end to end (also known as "connected") to each other, of course, the number of a group of lower gaskets 2 can also be two or three pieces of the same length (arc length).

[0023] In the present embodiment, the number of the lower gasket bosses 21 mentioned above is a pair, but this obviously cannot be considered as a necessary number based on this, for example, it can be three or four, etc.; although the number of the aforementioned set of lower gaskets 2 is four, it can also be two or three, etc. Therefore, the present invention cannot be limited by the number of the aforementioned components. The aforementioned set of lower gaskets 2 preferably adopts gaskets made of self-lubricating materials, such as polytetrafluoroethylene, ceramics or copper-based inlaid self-lubricating materials, etc. However, if a gasket made of metal materials, rubber or asbestos with stable friction, isolation, sealing and elastic effects is used, it should be regarded as an equivalent technical means and still belongs to the technical connotation scope disclosed in the present invention.

[0024] Depend on Figure 1 As shown, lower chassis foot holes 15 are provided in an interval state in the aforementioned lower gasket accommodating cavity 13 and around the circumferential direction of the lower gasket accommodating cavity 13. The function of the lower chassis foot holes 15 is: when the lower chassis 1 of the present invention is installed with a lower chassis fixing plate (not shown in the figure) having a foot 9 that is separately equipped, the lower chassis foot holes 15 are matched with the foot 9, that is, the foot 9 is inserted into the lower chassis foot holes 15.

[0025] There are at least three forms of installing the aforementioned lower chassis 1 on the vehicle, but not limited to the following: one is to set (i.e. fix) a lower chassis fixing plate on the vehicle floor of the vehicle, form the aforementioned clamping foot 9 on the lower chassis fixing plate, set the lower chassis 1 on the lower chassis fixing plate at a position corresponding to the clamping foot 9 through the lower chassis clamping foot hole 15 thereon, and simultaneously fix it to the lower chassis fixing plate through the chassis fixing plate screw 16 and the lower pull seat screw 811 mentioned below; the second is to set a pair of car seat static slide rails (i.e. fixed slide rails) parallel to each other on the vehicle compartment floor, and set a pair of car seat dynamic slide rails that form a sliding pair with the car seat static slide rails on the lower chassis fixing plate, and set the lower chassis 1 on the lower chassis fixing plate in the aforementioned first form; the third is to directly set the aforementioned clamping foot on the vehicle compartment floor, and fix the lower chassis 1 to the lower chassis fixing plate through the lower chassis clamping foot hole 15 thereon. In the aforementioned second form, considering the structure of the slide rail, the lower chassis fixing plate adopts a rectangular plate. Of course, the several installation methods listed above are merely non-limiting examples and should not be construed as being limited to these methods.

[0026] On the upward side of the aforementioned lower chassis 1 and around the outer side of the aforementioned lower gasket accommodating cavity 13, an arched lower chassis outer boss 14 with a cross-sectional shape of a "︹" is formed; on the upward side of the aforementioned rotating disk 3 and around the aforementioned rotating disk centering mechanism clearance hole 31, a certain center disk support cavity 32 is formed, and dynamic disk seat fixing screws 36 are arranged in a spaced state on the edge parts of the rotating disk 3. In the use state, the dynamic disk seat fixing screws 36 are fixed to the car seat, and the aforementioned rotating disk centering mechanism 4 fixed to the aforementioned lower chassis 1 at a position corresponding to the aforementioned ring gear plate 11 is supported on the cavity bottom wall of the aforementioned centering disk support cavity 32; the aforementioned rotating disk driving mechanism 5 together with the aforementioned lock shaft traction connection mechanism 7 are arranged on the rotating disk 3 in a state of being suspended on the upward side of the rotating disk 3; the aforementioned rotating disk locking and unlocking actuator 6 is locked or unlocked with the aforementioned lower chassis 1 at a position corresponding to the aforementioned lower chassis outer boss 14.

[0027] See you next time Figure 2 and Figure 4The aforementioned rotating disk centering mechanism 4 includes a certain center locking disk 41 and a group of upper gaskets 42. A certain center locking disk hole 411 is formed in the central position of the center locking disk 41, and a certain center locking disk stack ring 4111 is formed on the upper side around the center locking disk hole 411. A center locking disk fixing groove 43 recessed in the surface of the center locking disk 41 is formed on the outer side of the center locking disk stack ring 4111. A gear ring plate screw 112 is arranged in a spaced state on the aforementioned gear ring plate 11 and at a position corresponding to the center locking disk fixing groove 43. The upper end of the gear ring plate screw 112 penetrates into the center locking disk fixing groove 43 through the gear ring plate screw hole 431 opened on the groove bottom wall of the center locking disk fixing groove 43 and is locked by the gear ring plate screw locking nut 1121 located in the center locking disk fixing groove 43. The base of 112 is located on the downward side of the gear ring plate 11, and upper gasket embedding flange insertion holes 44 equal to the number of a group of upper gaskets 42 are spaced apart in pairs on the centering locking disk 41 and located around the outer side of the aforementioned centering locking disk fixing groove 43. The upper surfaces of a group of upper gaskets 42 each constitute a pair of upper gasket embedding flanges 421, and the lower surfaces each constitute a pair of upper gasket supporting bosses 422, and an inclined rib 423 is respectively constituted at one end of a group of upper gaskets 42 facing the aforementioned centering locking disk fixing groove 43, the aforementioned pair of upper gasket embedding flanges 421 are embedded with the aforementioned upper gasket embedding flange insertion holes 44, the aforementioned pair of upper gasket supporting bosses 422 are supported on the bottom wall of the aforementioned centering disk supporting cavity 32, and the aforementioned inclined rib 422 is in contact with the outer wall 432 of the centering locking disk fixing groove of the centering locking disk fixing groove 43. The material of the aforementioned set of upper gaskets 42 is the same as described for the set of lower gaskets 2 .

[0028] A first fixing screw 33 a and a second fixing screw 33 b of the motor mounting frame are arranged on the aforementioned rotating disk 3 . The first and second fixing screws 33 a and 33 b of the motor mounting frame are spaced 180° apart from each other in the circumferential direction of the rotating disk 3 .

[0029] See also Figure 2 And combined with Figure 1The aforementioned rotating disk driving mechanism 5 includes a motor mounting frame 51, a rotating disk driving motor 52, a rotating disk driving reduction box 53, a reduction box fixing frame 54 and a ring gear meshing gear 55. A left fixing ear 511 of the motor mounting frame is extended from the left end of the motor mounting frame 51, and a left fixing ear hole 5111 of the motor mounting frame is provided on the left fixing ear 511 of the motor mounting frame. The aforementioned first fixing screw 33a of the motor mounting frame is fixed to the left fixing ear 511 of the motor mounting frame at a position corresponding to the left fixing ear hole 5111 of the motor mounting frame and is locked by the left locking nut 33c. A right fixing ear 512 of the motor mounting frame is extended from the right end of the motor mounting frame 51, and a right fixing ear hole 5121 of the motor mounting frame is provided on the right fixing ear 512 of the motor mounting frame. The aforementioned second fixing screw 33b of the motor mounting frame is fixed to the right fixing ear 512 of the motor mounting frame and is locked by the right The locking nut 33d is locked, and the middle part of the motor mounting frame 51 corresponds to the top of the rotating disk 3 in a vacant state. The rotating disk driving motor 52 is arranged in a horizontal state. The rotating disk driving motor 52 is transmission-connected with the rotating disk driving reduction box 53 and is fixed to the reduction box fixing frame 54 together with the rotating disk driving reduction box 53 and the rotating disk driving motor 52, and the reduction box fixing frame 54 is fixed to the downward side of the motor mounting frame 51, and the ring gear meshing gear 55 is fixed on the rotating disk driving reduction box shaft 531 of the rotating disk driving reduction box 53 by a flat key fixing method or a locking screw locking method and is meshed with the aforementioned ring gear 111 at a position corresponding to the aforementioned lower chassis center hole 12; the aforementioned lock shaft traction connection mechanism 7 connected to the aforementioned rotating disk locking and unlocking actuator 6 arranged on the aforementioned rotating disk 3 is arranged on the left end of the aforementioned motor mounting frame 51 facing downward.

[0030] The aforementioned lock shaft traction connection mechanism 7 includes a zipper cable drum drive motor 71, a zipper cable drum 72 and a zipper rope 73. The zipper cable drum drive motor 71 is arranged in a horizontal state. The zipper cable drum drive motor 71 is transmission-connected with the zipper cable drum 72 and is fixed to the left end of the aforementioned motor mounting frame 51 facing downward together with the zipper cable drum 72. The end of the zipper rope 73 facing the zipper cable drum 72 is connected to the zipper cable drum 72, and the end of the zipper rope 73 facing the aforementioned rotary disk locking and unlocking actuator 6 is connected to the rotary disk locking and unlocking actuator 6, wherein the aforementioned zipper rope 73 is movably arranged in a zipper rope outer sheath 731. The aforementioned zipper rope 73 with the zipper rope outer sheath 731 is similar to the structural form of the throttle cable of a motorcycle that is commonly seen.

[0031] The aforementioned zipper cord reel 72 can also be called a wire rope reel, which is driven by the aforementioned zipper cord reel driving motor 71, and the working principle is roughly as follows: the zipper cord reel driving motor 71 provides power for the zipper cord reel 72, that is, when the zipper cord reel driving motor 71 is powered on, it starts to rotate, and the rotation of the motor is transmitted to the transmission wheel through a transmission device such as a gear, a belt or a chain. The transmission wheel is usually located at the bottom of the zipper cord reel 72 and directly contacts the working surface. The transmission wheel drives the zipper cord 73 to move, that is, to move along the working surface. When the bottom of the zipper cord reel 72 contacts the object that needs to be rotated, the zipper cord 73 pulls the object that needs to be rotated.

[0032] In the present embodiment, the aforementioned rotating disk drive motor 52 and the zipper rope disk drive motor 71 are motors with forward and reverse rotation functions; a lead tube 513 is fixed in a longitudinal cantilever state in the middle of the aforementioned motor mounting seat 51, and a lead seat fixing flange 5132 is formed on the edges around the bottom of the outer wall of the lead tube 513, and a lead seat 10 is fixed on the lead seat fixing flange 5132 by a pair of lead seat fixing screws 102, and the lead seat 10 has a lead seat cavity 101 of a generally U-shaped shape corresponding to the lead tube cavity 5131 of the lead tube 513, and a shaft sleeve hole 103 is provided on the upper side of the lead seat 10 and at a position corresponding to the aforementioned rotating disk drive reduction gearbox shaft 531, and a shaft sleeve 1031 is arranged in the shaft sleeve hole 103, and the end of the aforementioned rotating disk drive reduction gearbox shaft 531 is matched with the shaft sleeve 1031. The power line is led to the aforementioned rotating disk drive motor 52 and the zipper cord disk drive motor 71 through the lead seat cavity 101 and the lead tube cavity 5131 in turn. The power source referred to here is the vehicle-mounted power source.

[0033] Depend on Figure 1 As shown, a lock tongue hole 141 is provided on the aforementioned lower chassis outer boss 14 and at a position corresponding to the aforementioned rotating disk locking and unlocking actuator 6. When the rotating disk locking and unlocking actuator 6 is in a state of matching with the lock tongue hole 141, the aforementioned rotating disk 3 and the aforementioned lower chassis 1 are locked to each other, and when the rotating disk locking and unlocking actuator 6 is in a state of releasing the matching with the lock tongue hole 141, the rotating disk 3 and the lower chassis 1 are unlocked.

[0034] See you next time Figure 1 A pair of lock shaft support seats 34 are formed on the aforementioned rotating disk 3 and at positions corresponding to the aforementioned rotating disk locking and unlocking actuator 6. The space between the pair of lock shaft support seats 34 constitutes a lock tongue clearance cavity 341. When the aforementioned rotating disk 3 and the aforementioned lower chassis 1 are in a locked state, the lock tongue clearance cavity 341 corresponds to the aforementioned lock tongue hole 141, that is, it penetrates into the lock tongue hole 341; Figure 1As shown, an anti-impact protection mechanism 8 is provided with the aforementioned rotating disk 3 and the lower chassis 1 as carriers. The number of the anti-impact protection mechanism 8 is at least a pair of intervals and each includes a pull-down seat 81 and an upper pull-up seat 82. The pull-down seat 81 is located at the outer edge of the aforementioned lower chassis 1 and is fixed to the lower chassis 1 by the pull-down seat screw 811. The upper pull-up seat 82 is located at the outer edge of the aforementioned rotating disk 3 and is fixed to the rotating disk 3 by the upper pull-up seat screw 821. The upper and lower pull-down seats 82 and 81 are mutually restrained and matched (interlocked), and the cross-sectional shape of the pull-down seat 82 is in the shape of a letter], while the cross-sectional shape of the upper pull-up seat 82 is in the shape of an L and penetrates into the pull-down seat cavity 812 of the pull-down seat 81. In this embodiment, the aforementioned anti-impact protection mechanism 8 has a pair, each of which is buckled by the pull-down seat 81 and the upper pull-up seat 82. When the vehicle encounters a severe impact, the buckling of the upper and lower pull-down seats 82 and 81 ensures that the rotating disk 3 and the lower chassis 1 are in a good matching state. As mentioned above, when in use, the lower pull-down seat screw 811 is also fixed to the chassis fixing plate located below the lower chassis 1; chassis fixing plate fixing screws 16 for fixing to the aforementioned lower chassis fixing plate are also arranged at intervals on the lower chassis 1 and located on the outside of the aforementioned lower chassis outer boss 14 around the lower chassis 1, and the aforementioned upper pull-up seat screw 821 is also fixed to the car seat when in use.

[0035] See also Figure 3 And combined with Figure 1The aforementioned rotating disk locking and unlocking actuator 6 includes a lock shaft 61, a lock shaft traction arm 62, a lock tongue 63, a reset torsion spring 64 and an outer sheath fixing plate 65. The middle part of the lock shaft 61 is placed on the aforementioned pair of lock shaft support seats 34 formed on the aforementioned rotating disk 3. The two ends of the lock shaft 61 are rotatably supported on the lock shaft pivot seats 35 formed on the rotating disk 3 and respectively located on both sides of the pair of lock shaft support seats 34. The lock shaft traction arm 62 is sleeved on one end of the lock shaft 61 facing the outer sheath fixing plate 65, and is limited by the traction arm limiting clamps 613 arranged on the lock shaft 61 and located on both sides of the lock shaft traction arm 62. The aforementioned zipper rope 73 is fixed to the lock shaft traction arm 62 at one end of the rotating disk locking and unlocking actuator 6, and the aforementioned zipper rope outer sheath 731 is fixed to the outer sheath fixing plate 65, and the outer sheath plate 65 The locking tongue 63 is fixed to the upward side of the aforementioned rotating disk 1, and has a locking tongue sleeve 631, which is sleeved on the lock shaft 61 at a position corresponding to the aforementioned locking tongue yielding cavity 341 and is limited by a limiting foot 611 located on the lock shaft 61 at a position corresponding to a limiting foot groove 6311 provided on the locking tongue sleeve 631. When the locking tongue 63 penetrates into the aforementioned locking tongue hole 141, the aforementioned rotating disk 3 is locked with the aforementioned lower chassis 1, and when the locking tongue 63 withdraws from the locking tongue hole 141, the aforementioned rotating disk 3 is released from the lock with the aforementioned lower chassis 1, and a reset torsion spring 64 is sleeved on the lock shaft 61, and a first torsion spring foot 641 of the reset torsion spring 64 abuts against the downward side of the aforementioned rotating disk 3, and a second torsion spring foot 642 of the reset torsion spring 64 abuts against a torsion spring foot stop screw 612 fixed on the lock shaft 61.

[0036] According to common sense, the car seat is fixed on the rotating disk 3, that is to say, Figure 1The movable plate seat fixing screws 36 shown and mentioned above fix the car seat. When the rotating plate 3 is to drive the car seat installed thereon to rotate an angle, for example, to rotate the car seat from the front corresponding to the driving direction of the car to the direction toward the rear of the car, the passenger operates the button switch installed on the side of the seat or other reasonable positions to operate the zipper rope drum driving motor 71, and the zipper rope drum 72 drives the zipper rope 73, and the zipper rope 73 pulls the lock shaft traction arm 62 of the structural system of the rotating plate locking and unlocking actuator 6. The lock shaft traction arm 62 rotates an angle while overcoming the reaction force of the reset torsion spring 64, driving the lock tongue sleeve 631 together with the lock tongue 63 to move upward out of the lock tongue hole 141. Then, the corresponding button switch is operated to operate the rotating disk drive motor 52 of the structural system of the rotating disk drive mechanism 5, and the rotating disk drive motor 52 drives the rotating disk drive reduction box 53, and the rotating disk drive reduction box shaft 531 of the rotating disk drive reduction box 53 drives the ring gear meshing gear 55 to move along the ring gear 111, until the seat occupant changes from the previous direction facing the vehicle to the direction facing away from the vehicle (the adjustment method of other angle positions is the same as the example, which will not be repeated). When the aforementioned lock tongue 63 corresponds to the lock tongue hole 141, it means that the seat occupant is facing the front of the vehicle.

[0037] In summary, the technical solution provided by the present invention makes up for the shortcomings of the existing technology, successfully completes the invention task, and faithfully realizes the technical effects stated by the applicant in the technical effect column above.

Claims

1. A car seat disc rotating device, comprising a lower chassis (1); a group of lower gaskets (2), the group of lower gaskets (2) being arranged on the upper side of the lower chassis (1); a rotating disk (3), the side of the rotating disk (3) facing downward is rotatably supported on the group of lower gaskets (2), and a rotating disk centering mechanism clearance hole (31) is formed at the central position of the rotating disk (3); a rotating disk centering mechanism (4), the rotating disk centering mechanism (4) is fixed to the lower chassis (1) at a position corresponding to the rotating disk centering mechanism clearance hole (31), and at the same time limits the surrounding area of ​​the rotating disk centering mechanism clearance hole (31); a rotating disk driving mechanism (5) for rotating the rotating disk (3), the rotating disk driving mechanism (5) being arranged on the upper side of the rotating disk (3); characterized in that: A gear ring plate (11) is directly formed in the middle area of ​​the lower chassis (1), and the central area of ​​the gear ring plate (11) constitutes the lower chassis center hole (12) of the lower chassis (1). A gear ring (111) is formed on the wall of the gear ring plate (11) facing the lower chassis center hole (12) and around the circumferential direction of the hole wall of the lower chassis center hole (12), and the rotating disk driving mechanism (5) is meshed with the gear ring (111); the rotating disk centering mechanism (4) is fixed to the lower chassis (1) at a position corresponding to the gear ring plate (11), and a rotating disk locking and unlocking actuator (6) for locking or unlocking the rotating disk (3) and the lower chassis (1) is arranged on the rotating disk (3), and a locking shaft traction connection mechanism (7) is arranged on the rotating disk driving mechanism (5), and the locking shaft traction connection mechanism (7) is connected to the rotating disk locking and unlocking actuator (6).

2. The car seat disc rotating device according to claim 1, characterized in that: A lower gasket accommodating cavity (13) is formed on the upper side of the lower chassis (1) and at a position corresponding to the group of lower gaskets (2) in the circumferential direction around the lower chassis (1). The group of lower gaskets (2) are arranged in the lower gasket accommodating cavity (13). On the upper side of the group of lower gaskets (2), at least one pair of lower gasket bosses (21) protruding from the surface of the lower gasket (2) and spaced from each other are formed. The upper surface of the lower gasket bosses (21) protrudes out of the upper surface of the lower gasket accommodating cavity (13). The space between two adjacent lower gasket bosses (21) forms a lower gasket groove (22). The rotating disk (3) is rotatably supported on the lower gasket bosses (21) on the lower side. The group of lower gaskets (2) are each C-shaped and are composed of two, three or four lower gaskets connected end to end to form an integral annular structure.

3. The car seat disc rotating device according to claim 2, characterized in that: A lower chassis outer boss (14) having a cross-sectional shape of a "︹" is formed on the upper side of the lower chassis (1) and around the outer side of the lower gasket accommodating cavity (13); a certain center disk support cavity (32) is formed on the upper side of the rotating disk (3) and around the rotating disk centering mechanism clearance hole (31), and movable disk seat fixing screws (36) are arranged in a spaced state at the edges of the chassis (3). In a use state, the movable disk seat fixing screws (36) are aligned with the vehicle seat. The rotating disk centering mechanism (4) is fixed to the lower chassis (1) at a position corresponding to the gear ring plate (11) and is supported on the bottom wall of the centering disk support cavity (32); the rotating disk driving mechanism (5) together with the locking shaft traction connection mechanism (7) are arranged on the rotating disk (3) in a state of being suspended on the upward side of the rotating disk (3); the rotating disk locking and unlocking actuator (6) is locked or unlocked with the lower chassis (1) at a position corresponding to the outer boss (14) of the lower chassis.

4. The car seat disc rotating device according to claim 3, characterized in that: The rotating disk centering mechanism (4) comprises a fixed center locking disk (41) and a group of upper gaskets (42), wherein a fixed center locking disk hole (411) is formed at the central position of the fixed center locking disk (41), a fixed center locking disk stacking ring (4111) is formed on one side facing upward around the fixed center locking disk hole (411), and a fixed center locking disk fixing groove (4111) is formed on the outer side of the fixed center locking disk stacking ring (4111) which is recessed in the surface of the fixed center locking disk (41). 3), a gear ring plate screw (112) is provided in a spaced state on the gear ring plate (11) and at a position corresponding to the centering locking disk fixing groove (43), the upper end of the gear ring plate screw (112) penetrates into the centering locking disk fixing groove (43) through a gear ring plate screw hole (431) provided on the groove bottom wall of the centering locking disk fixing groove (43) and is locked by a gear ring plate screw locking nut (1121) located in the centering locking disk fixing groove (43), the gear ring plate screw ( The base of the gear ring plate (112) is located on the side of the gear ring plate (11) facing downward, and upper gasket embedding flange insertion holes (44) are arranged in pairs on the centering locking disk (41) and on the outer side of the centering locking disk fixing groove (43), and the number of upper gasket embedding flange insertion holes (44) is equal to the number of a group of upper gaskets (42). The upper surface of a group of upper gaskets (42) is respectively formed with a pair of upper gasket embedding flanges (421), and the lower surface is respectively formed with a pair of upper gasket supporting bosses (422), and in a group of upper gaskets The sheet (42) is formed with an inclined rib (423) at one end facing the centering locking disk fixing groove (43), the pair of upper gasket embedding flanges (421) are engaged with the upper gasket embedding flange insertion hole (44), the pair of upper gasket supporting bosses (422) are supported on the bottom wall of the centering disk supporting cavity (32), and the inclined rib (422) is in contact with the outer wall (432) of the centering locking disk fixing groove of the centering locking disk fixing groove (43).

5. The car seat disc rotating device according to claim 3, characterized in that: A first fixing screw (33a) of a motor mounting frame and a second fixing screw (33b) of the motor mounting frame are arranged on the rotating disk (3), and the first and second fixing screws (33a, 33b) of the motor mounting frame are 180 degrees apart from each other in the circumferential direction of the rotating disk (3); the rotating disk driving mechanism (5) comprises a motor mounting frame (51), a rotating disk driving motor (52), a rotating disk driving reduction box (53), a reduction box fixing frame (54) and a ring gear meshing gear (55); a left fixing ear (511) of the motor mounting frame is extended from the left end of the motor mounting frame (51), the first fixing screw (33a) of the motor mounting frame is fixed to the left fixing ear (511) of the motor mounting frame, and a right fixing ear (511) of the motor mounting frame is extended from the right end of the motor mounting frame (51). 2), the second fixing screw (33b) of the motor mounting frame is fixed to the right fixing ear (512) of the motor mounting frame, the middle part of the motor mounting frame (51) corresponds to the upper part of the rotating disk (3) in a vacant state, the rotating disk driving motor (52) is arranged in a horizontal state, the rotating disk driving motor (52) is connected to the rotating disk driving reduction box (53) by transmission, and the rotating disk driving reduction box (53) and the rotating disk driving motor (52) are fixed to the reduction box fixing frame (54), and the reduction box fixing frame (54) is fixed to the side of the motor mounting frame (51) facing downward, and the ring gear meshing gear (55) is fixed on the rotating disk driving reduction box shaft (531) of the rotating disk driving reduction box (53) and meshes with the ring gear (111) at a position corresponding to the central hole (12) of the lower chassis; The lock shaft traction connection mechanism (7) connected to the rotating disk locking and unlocking actuator (6) arranged on the rotating disk (3) is arranged on the left end of the motor mounting frame (51) facing downward.

6. The car seat disc rotating device according to claim 5, characterized in that: The lock shaft traction connection mechanism (7) comprises a zipper rope disc drive motor (71), a zipper rope disc (72) and a zipper rope (73). The zipper rope disc drive motor (71) is arranged in a horizontal state. The zipper rope disc drive motor (71) is transmission-connected with the zipper rope disc (72) and the zipper rope disc drive motor (71) is fixed on the left side of the motor mounting frame (51) facing downward together with the zipper rope disc (72). One end of the zipper rope (73) facing the zipper rope disc (72) is connected to the zipper rope disc (72), and one end of the zipper rope (73) facing the rotating disk locking and unlocking actuator (6) is connected to the rotating disk locking and unlocking actuator (6), wherein the zipper rope (73) is movably arranged in a zipper rope outer sheath (731).

7. The car seat disc rotating device according to claim 6, characterized in that: The rotating disk drive motor (52) and the zipper rope disk drive motor (71) are motors with forward and reverse rotation functions; a lead tube (513) is fixed in a longitudinal cantilever state in the middle of the motor mounting seat (51), and a lead seat fixing flange (5132) is formed on the edge of the bottom of the outer wall of the lead tube (513), and a lead seat (102) is fixed on the lead seat fixing flange (5132) by a pair of lead seat fixing screws (102). 0), the lead base (10) has a lead base cavity (101) corresponding to the lead tube cavity (5131) of the lead tube (513), a sleeve hole (103) is provided on the upper side of the lead base (10) and at a position corresponding to the rotating disk drive reduction gearbox shaft (531), a sleeve (1031) is provided in the sleeve hole (103), and the end of the rotating disk drive reduction gearbox shaft (531) is matched with the sleeve (1031).

8. The car seat disc rotating device according to claim 6, characterized in that: A lock tongue hole (141) is provided on the outer boss (14) of the lower chassis and at a position corresponding to the rotating disk locking and unlocking actuator (6); when the rotating disk locking and unlocking actuator (6) is in a state of matching with the lock tongue hole (141), the rotating disk (3) and the lower chassis (1) are locked to each other; and when the rotating disk locking and unlocking actuator (6) is in a state of releasing the matching with the lock tongue hole (141), the rotating disk (3) and the lower chassis (1) are unlocked.

9. The car seat disc rotating device according to claim 8, characterized in that: A pair of lock shaft support seats (34) are formed on the rotating disk (3) and at positions corresponding to the rotating disk locking and unlocking actuator (6), and the space between the pair of lock shaft support seats (34) constitutes a lock tongue clearance cavity (341). When the rotating disk (3) and the lower chassis (1) are in a locked state, the lock tongue clearance cavity (341) corresponds to the lock tongue hole (141); an anti-impact protection mechanism (8) is provided with the rotating disk (3) and the lower chassis (1) as carriers, and the number of the anti-impact protection mechanisms (8) is at least a pair arranged at intervals and each includes a pull-down seat (81) and an upper pull-up seat (82), the pull-down seat (81) is located at the outer edge of the lower chassis (1) and is fixed to the lower chassis (1) by a pull-down seat screw (811), and the upper pull-down seat (82) is fixed to the lower chassis (1) by a pull-down seat screw (811). The pull seat (82) is located at the outer edge of the rotating disk (3) and is fixed to the rotating disk (3) by an upper pull seat screw (821). The upper and lower pull seats (82) and (81) are mutually restrained and cooperated, and the cross-sectional shape of the lower pull seat (82) is in the shape of a letter "]", while the cross-sectional shape of the upper pull seat (82) is in the shape of a letter "L" and extends into the lower pull seat cavity (812) of the lower pull seat (81); in a state of use, the lower pull seat screw (811) is also fixed to a chassis fixing plate located below the lower chassis (1); chassis fixing plate fixing screws (16) are also arranged at intervals on the lower chassis (1) and located on the outer side of the lower chassis outer boss (14) in the circumferential direction around the lower chassis (1), and the upper pull seat screw (821) is also fixed to the car seat in a state of use.

10. The car seat disc rotating device according to claim 9, characterized in that: The rotating disk locking and unlocking actuator (6) comprises a lock shaft (61), a lock shaft pulling arm (62), a lock tongue (63), a return torsion spring (64) and an outer sheath fixing plate (65); the middle portion of the lock shaft (61) is placed on the pair of lock shaft support seats (34) formed on the rotating disk (3); both ends of the lock shaft (61) are rotatably supported on lock shaft pivot seats (35) formed on the rotating disk (3) and respectively located on both sides of the pair of lock shaft support seats (34); The lock shaft traction arm (62) is sleeved on one end of the lock shaft (61) facing the outer sheath fixing plate (65), and is limited by traction arm limiting clamps (613) arranged on the lock shaft (61) and located on both sides of the lock shaft traction arm (62), one end of the zipper rope (73) facing the rotating disk locking and unlocking actuator (6) is fixed to the lock shaft traction arm (62), and the zipper rope outer sheath (731) is fixed to the outer sheath fixing plate (65), and the outer sheath plate (65) is fixed to the The rotating disk (1) is fixed on one side facing upwards, and the locking tongue (63) has a locking tongue sleeve (631). The locking tongue sleeve (631) is sleeved on the locking shaft (61) at a position corresponding to the locking tongue clearance cavity (341), and the locking tongue sleeve (631) is limited by a limiting foot (611) located on the locking shaft (61) at a position corresponding to a limiting foot groove (6311) provided on the locking tongue sleeve (631). When the locking tongue (63) is inserted into the locking tongue hole (141), the rotating disk (1) is rotated. The disk (3) is locked with the lower chassis (1), and when the lock tongue (63) exits the lock tongue hole (141), the lock between the rotating disk (3) and the lower chassis (1) is released, and the reset torsion spring (64) is sleeved on the lock shaft (61), and the first torsion spring foot (641) of the reset torsion spring (64) abuts against the downward side of the rotating disk (3), and the second torsion spring foot (642) of the reset torsion spring (64) abuts against the torsion spring foot stop screw (612) fixed on the lock shaft (61).

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