CN107662525B

CN107662525B - Seat rotating apparatus for vehicle

Info

Publication number: CN107662525B
Application number: CN201710629132.4A
Authority: CN
Inventors: 南宫准; 彭炫星; 池评宰
Original assignee: Seoyon E Hwa Co Ltd
Current assignee: Seoyon E Hwa Co Ltd
Priority date: 2016-07-29
Filing date: 2017-07-28
Publication date: 2020-05-12
Anticipated expiration: 2037-07-28
Also published as: CN107662525A

Abstract

A seat rotating apparatus for a vehicle is disclosed. A seat rotating apparatus for a vehicle of an embodiment of the present invention includes: a support plate; an annular lower fixing plate having a first bent portion formed along an edge of the lower fixing plate; an annular upper fixing plate formed with a second bent portion capable of being positioned within the first bent portion; a rotating plate rotatably disposed between the lower fixing plate and the upper fixing plate and formed with a third bending part that can be positioned between the first bending part and the second bending part; a bearing portion provided between the first bent portion and the third bent portion and between the second bent portion and the third bent portion, the bearing portion including: a first set of bearings, a second set of bearings, and an annular bearing receiving plate. The seat rotating device of the invention can stably realize the rotation of the rotating plate when rotating, and simultaneously improve the dynamic strength and/or static strength of the rotating device, thereby ensuring the operation reliability of the rotating device.

Description

Seat rotating apparatus for vehicle

Technical Field

The present invention relates to a seat rotating apparatus, and more particularly, to a seat rotating apparatus for a vehicle capable of providing convenience to a passenger by rotating a seat for installation on the vehicle by 180 ° in a clockwise or counterclockwise direction.

Background

In general, a vehicle seat is mainly arranged to face forward, and adopts a structure that is movable only in the front-rear direction.

However, a seat rotating apparatus is provided on a seat of a partial Sport Utility Vehicle (SUV) or a Recreational Vehicle (RV) to be able to rotate in a clockwise or counterclockwise direction by a desired angle, so that the seat can be arranged in a desired state.

However, such a seat swiveling apparatus is only applicable to a very small number of Sport Utility Vehicles (SUVs) or Recreational Vehicles (RVs), and is not applicable to a driver seat and a passenger seat among them, and thus cannot activate the market related to the seat swiveling apparatus.

However, in recent years, unmanned vehicles that do not require direct driving by a driver have been actively developed and experimentally studied, and for this reason, it is expected that vehicles cross living spaces (mobile livingspaces) that can be used as a single means of transportation, and accordingly, seat rotating apparatuses for utilizing the indoor space of vehicles have become necessary and applicable technologies.

In particular, the seat swiveling apparatus for the unmanned vehicle is applied not only to the rear seat but also to the driver seat and the passenger seat, and particularly, to various configurations in which the driver seat and the passenger seat are provided with a forward-backward movement guide rail and a driving motor for electrically driving the seat to move along the forward-backward movement guide rail, and thus there is a need to secure a compact configuration and durability.

However, a conventional seat swivel device is known to include an upper fixed plate, a lower fixed plate, a swivel plate disposed between the upper fixed plate and the lower fixed plate, and bearings disposed between the upper fixed plate and the swivel plate, and between the swivel plate and the lower fixed plate, respectively, so that the seat swivels in accordance with the swiveling of the swivel plate on the upper fixed plate and the lower fixed plate. However, in order to form a space for accommodating the bearings provided between the upper fixed plate and the rotating plate and between the rotating plate and the lower fixed plate when the seat is rotated, it is necessary to bend the edges of the upper fixed plate, the lower fixed plate, and the rotating plate in a complicated manner, and the space for accommodating the bearings is opened to the outside, so that foreign substances frequently enter, and thus it is difficult to smoothly perform the operation of the rotating plate.

In addition, since a large amount of unnecessary space exists in the accommodating space for accommodating the bearing, the volume of the rotating device is unnecessarily increased, and the rotating plate moves during the operation when a gap is formed around the bearing, so that there are various problems such as poor riding comfort, incapability of responding to impact force during collision, and detachment of the rotating plate from the inside of the upper fixed plate and the lower fixed plate.

Further, the seat provided with the seat swivel device has a problem that a load is transferred to the swivel device by the weight of the seat itself and the weight of the occupant, and when an excessive load is applied to the swivel device, the load is concentrated on the bearing portion, and the seat cannot be smoothly swiveled.

Further, in order to rotate the seat, the occupant rotates the seat in a state of depressing the upper body and raising the lever portion releasing the locking of the rotating plate, and in this process, the state of raising the lever portion needs to be maintained until the seat is fixed to a desired fixed position, so that there is inconvenience, and there is inconvenience that the occupant needs to directly grip the seat to rotate in order to rotate the seat.

Disclosure of Invention

The present invention has been made to solve the above problems, and an object of the present invention is to provide a seat swivel device that improves a structure constituting the seat device, can stably rotate a swivel plate during swivel work, and can electrically lock and unlock the swivel plate and rotate a seat by a simple operation, thereby improving convenience of a user by improving dynamic strength and/or static strength of the swivel device to ensure operational reliability of the swivel device.

According to an embodiment of the present invention, there can be provided a seat rotating apparatus for a vehicle, including: a support plate installed on a floor in a vehicle compartment or a front-to-rear movement rail of a seat; an annular lower fixing plate mounted on the support plate and having a first bent portion formed along an edge thereof; an annular upper fixing plate which is fixedly connected to the lower fixing plate and the seat and is formed with a second bending portion which can be positioned within the first bending portion; a rotating plate rotatably disposed between the lower fixing plate and the upper fixing plate, and having a third bending portion formed thereon so as to be positioned between the first bending portion and the second bending portion; a bearing portion disposed between the first and third bent portions and between the second and third bent portions for reducing friction generated when the rotation plate rotates. Wherein the bearing portion includes: a first set of bearings disposed between the first flexure and the third flexure; a second set of bearings disposed between the second bend and a third bend; an annular bearing receiving plate having bearing receiving portions formed thereon for separately and rotatably receiving the first and second sets of bearings.

According to another embodiment of the present invention, there can be provided a seat rotating apparatus for a vehicle, including: a support plate installed on a floor in a vehicle compartment or a front-to-rear movement rail of a seat; an annular lower fixing plate mounted on the support plate and having a first bent portion formed along an edge thereof; an annular upper fixing plate connected to the lower fixing plate and the seat and formed with a second bent portion capable of being positioned within the first bent portion; a rotating plate rotatably disposed between the lower fixing plate and the upper fixing plate, and having a third bending portion formed thereon so as to be positioned between the first bending portion and the second bending portion; a bearing portion provided between the first and third bent portions and between the second and third bent portions for reducing friction generated when the rotation plate rotates; and a rotation locking part including a stopper seat and a fixing device formed on the rotation plate, the stopper seat being provided on the upper fixing plate and having at least one pair formed to be symmetrical to each other at an angle of 180 ° so that the stopper seat can lock or unlock the rotation of the rotation plate according to whether the rotation plate is coupled to the fixing device or not when the rotation plate is rotated in one side direction.

According to still another embodiment of the present invention, there can be provided a seat rotating apparatus for a vehicle, including: a support plate installed on a floor in a vehicle compartment or a front-to-rear movement rail of a seat; an annular lower fixing plate mounted on the support plate and having a first bent portion formed along an edge thereof; an annular upper fixing plate which is fixedly connected to the lower fixing plate and the seat and is formed with a second bending portion which can be positioned within the first bending portion; a rotating plate rotatably disposed between the lower fixing plate and the upper fixing plate, and having a third bending portion formed thereon so as to be positioned between the first bending portion and the second bending portion; a bearing portion provided between the first and third bent portions and between the second and third bent portions for reducing friction generated when the rotation plate rotates; a rotation locking part including a stopper seat and a fixing device formed on the rotation plate, the stopper seat being provided on the upper fixing plate and having at least one pair formed to be symmetrical to each other at an angle of 180 ° so that the stopper seat can lock or unlock the rotation of the rotation plate according to whether the rotation plate is coupled to the fixing device or not when the rotation plate is rotated in one side direction; and a rotation driving unit that rotationally drives the rotating plate unlocked by the rotation locking unit in an electric manner.

The invention reduces friction among an upper fixing plate, a rotating plate and a lower fixing plate through a bearing part with a combination structure of a ball bearing and a roller bearing, thereby preventing noise and abrasion.

In addition, since the ball bearing and the roller bearing of the bearing portion are formed in an integrated injection molded part, it is possible to realize integrated manufacture and integrated arrangement into the swivel device, and it is possible to prevent the seat from shaking and the swivel plate from being detached due to impact by the bent portions of the lower fixing plate, the swivel plate, and the upper fixing plate.

Further, the operation switching of the locking, unlocking, and rotation of the seat can be selectively performed by an electric operation or a manual operation, and in the case of the manual operation, the unlocking of the seat and the locking of the rotation plate after the seat rotation can be easily performed by only a single simple operation without continuously operating the lever portion by the occupant, whereby the convenience of the occupant can be greatly improved.

In addition, in the case of an electrically operated vehicle, the occupant operates a seat rotation button provided in the vehicle interior, so that the unlocking of the rotation device, the rotation of the seat, and the locking after the seat rotation can be electrically realized, thereby maximizing the convenience of the occupant.

Drawings

Fig. 1 is an exploded perspective view of a swivel seat provided with a seat swivel device for a vehicle according to one embodiment of the present invention;

fig. 2 is a sectional view of a seat rotating apparatus for a vehicle according to an embodiment of the present invention;

fig. 3 is a perspective view of a bearing portion provided in an embodiment according to the present invention;

fig. 4 is a side view of a bearing portion provided in an embodiment according to the present invention;

fig. 5 is an exploded perspective view of a swivel seat provided with a seat swivel device for a vehicle according to another embodiment of the present invention;

fig. 6 is a sectional view of a seat rotating apparatus for a vehicle according to another embodiment of the present invention;

fig. 7 is an enlarged view of a main portion illustrating a state in which a stopper seat is combined to the upper fixing plate illustrated in fig. 5;

FIG. 8 is an exploded perspective view of the fixture illustrated in FIG. 5;

fig. 9 is a view showing an operation state in which the rotating plate is unlocked by the fixing device illustrated in fig. 8;

fig. 10 is an operation state diagram of a seat rotating apparatus according to another embodiment of the present invention;

fig. 11 is an exploded perspective view of a swivel seat provided with a seat swivel device for a vehicle according to yet another embodiment of the present aspect;

fig. 12 is a sectional view of an electric seat swivel device for a vehicle according to still another embodiment of the present invention;

FIG. 13 is an exploded perspective view of the fixture illustrated in FIG. 11;

fig. 14 is a view showing an operation state in which the rotating plate is manually unlocked by the fixing device shown in fig. 13;

fig. 15 is a view showing an operation state in which the rotating plate is electrically unlocked by the fixing device shown in fig. 13;

fig. 16 is an operation state diagram of a seat rotating apparatus according to still another embodiment of the present invention.

Description of the reference numerals

10: electric seat rotating device

100: support plate 110: supporting part

120: second hook 200: lower fixing plate

210: first curved portion 300: upper fixing plate

310: second curved portion 400: rotary plate

410: third curved portion 420: reinforcing plate

500: bearing portion 510: first set of bearings

520: second set of bearings 530: bearing housing plate

600: the rotation locking portion 610: stop seat

620: the fixing device 630: first latch part

640: second latch portion 650: rod part

660: the actuator 700: rotary driving part

710: the gear bracket 720: rotary gear

730: motor mount 740: driving motor

20: forward-backward movement guide 30: chair (Ref. now to FIGS)

Detailed Description

Embodiments of the present invention will be described below with reference to the accompanying drawings, thereby providing specific details for practicing the invention.

Fig. 1 is an exploded perspective view of a swivel seat provided with an electric seat swivel device for a vehicle according to an embodiment of the present invention. Fig. 2 is a sectional view of an electric seat swivel device for a vehicle according to an embodiment of the present invention;

referring to fig. 1 and 2, the seat rotating apparatus for a vehicle according to the present invention includes a support plate 100, a lower fixing plate 200, an upper fixing plate 300, a rotating plate 400, and a bearing portion 500.

The support plate 100 is fixed to a floor or a front-rear moving rail 20 in an interior room of a vehicle and is formed in a pair of quadrangular plate-shaped structures, support portions 110 are bent at outer corner sides of the support plate 100, and a plurality of coupling holes are formed at both end sides of each support portion 110 for mounting the support portion 110 on the floor or the front-rear moving rail 20 in the interior room.

The support plate 100 may be formed in various structures such as an integrated flat plate structure, and the number and shape of the support parts 110 may be variously formed according to the structure of the support plate, within a range of a structure that can be generally mounted on the floor or the front-rear movement rail 20 and can stably support the connection structure connected to the upper portion of the support plate 100, in addition to the pair of quadrangular plate-shaped structures.

The support plate 100 has second hook portions 120 formed on the support portions 110 to be connected to first hook portions 31, and the first hook portions 31 are formed on both side brackets on the back side of the seat 30 to be rotatable together with the seat 30. At this time, the first and

second hook portions

31 and 120 are formed to have a preset curvature to be easily coupled to or decoupled from each other by the rotation of the seat.

With the combination of the first hook portion 31 and the second hook portion 120 as described above, it is possible to stably fix (lock) the seat after the seat 30 rotates, and it is possible to reinforce the dynamic strength and the static strength of the seat rotating device and the seat 30, and it is possible to play a role in preventing the seat rotating device and the seat 30 from shaking or separating due to vibration caused by vehicle movement or external impact caused by vehicle collision or the like.

In order to mount the rotating plate 400 on the support plate 100, the lower fixing plate 200 and the upper fixing plate 300 are formed as annular plates.

Specifically, the lower fixing plate 200 is formed with a plurality of coupling holes for coupling the support plate 100 and the upper fixing plate 300, respectively, and is formed with a first bending part 210 bent upward along an outer diameter side edge. A bearing mounting portion 220 for mounting the bearing portion 500 is formed along the first bent portion 210 in the lower fixing plate 200.

The upper fixing plate 300 is formed with a plurality of coupling holes for coupling the lower fixing plate 200, and a second bending part 310, and the second bending part 310 is bent into a reversed u-shape structure by being wound upward and outward at the bent portions of the three parts.

The outer diameter of the upper fixing plate 300 having the second bent portion 310 is formed to be smaller than the outer diameter of the lower fixing plate 200 having the first bent portion 210, the second bent portion 310 is located inside the first bent portion 210 when the lower fixing plate 200 and the upper fixing plate 300 are coupled and fixed, and the first bent portion 210 and the second bent portion 310 partially (end portions) overlap each other when viewed from a side view.

The rotating plate 400 is formed in a quadrangular plate shape having a circular opening formed in the middle thereof so as to be rotatable between the lower fixing plate 200 and the upper fixing plate 300, and a plurality of coupling holes for fixing the seat 30 are formed in the side surfaces of both side edges of the rotating plate 400. In addition, the respective corner sides of the lower surface of the rotating plate 400 are provided with reinforcing plates 420 so that it is possible to prevent the rotating plate 400 from being deformed by a load (equal to a load of the seat and the occupant) applied to the rotating plate 400 due to the connection to the seat 30.

When the rotating plate 400 is positioned between the lower fixing plate 200 and the upper fixing plate 300, a third bent portion 410 is formed on the rotating plate 400, and the third bent portion 410 is positioned between the first bent portion 210 and the second bent portion 310.

The third curved portion 410 is formed along the center side edge of the circular opening of the rotating plate 400, and is formed as a "profile" by winding the three portions at the bent portions outward and downward. When the third bend 410 is positioned between the first bend 210 and the second bend 310, as shown in fig. 2, the end of the first bend 210, the end of the second bend 310, and the end of the third bend 410 partially overlap each other.

Since the first bent portion 210, the second bent portion 310, and the third bent portion 410 are formed in a simpler structure, an unnecessary void area is minimized in a space for placing (arranging) the bearing portion 500 within the

bent portions

210, 310, 410, thereby forming a miniaturized structure, and supporting and transmitting of load can be easily achieved through the bearing portion 500 while the bearing portion 500 can be stably provided.

In addition, since the third bent portion 410 is positioned between the first bent portion 210 and the second bent portion 310, the rotating plate 400 can be prevented from being separated from the upper and

lower fixing plates

300 and 200 due to shaking or external impact. That is, the first hook 31 and the second hook 120 are double-reinforced in the dynamic strength and/or the static strength of the seat rotating device by the shape and arrangement of the first bent 210, the second bent 310, and the third bent 410, thereby playing an effect of preventing the seat from shaking due to vibration or coming off due to impact, and the like.

Fig. 3 is a perspective view of a bearing portion 500 provided in an embodiment according to the present invention. Fig. 4 is a side view of a bearing portion 500 provided in an embodiment according to the present invention.

Referring to fig. 3 and 4, the bearing parts 500 are disposed between the upper fixed plate 300 and the rotating plate 400 and between the lower fixed plate 200 and the rotating plate 400, so that the bearing parts 500 function to reduce friction and gaps with the upper fixed plate 300 and the lower fixed plate 200 when the rotating plate 400 rotates. Such a bearing portion 500 includes a first group of bearings 510, a second group of bearings 520, and a bearing receiving plate 530.

The first set of bearings 510 are formed as roller bearings, are located on the bearing mounting part 200 of the lower fixing plate 200, and are in line contact with the upper surface of the first bent portion 210 and the lower surface of the third bent portion 410. When the rotation plate 400 is swung left and right by the rotation of the seat 30, the first group bearing 510 is in line contact with the lower surface of the third bent portion 410, so that stable support can be achieved with respect to the ball bearing, and a supporting (dispersing) force of a load transmitted in a vertical direction can be increased.

The second set of bearings 520 is formed as ball bearings and is located between the third bent portion 410 of the rotating plate 400 and the second bent portion 310 of the upper fixing plate 300. At this time, the second group of bearings 520 are respectively in contact with the two curved surfaces of the second and third

curved parts

310 and 410 to form a total of four contact points. Accordingly, the gaps between the inside of the second and

third bending parts

310 and 410 and the second group bearing 520, respectively, are minimized (almost not) so that the shaking of the seat rotating apparatus can be minimized, and the noise caused by the friction or shaking generated by the rotating motion of the rotating plate 400 can be minimized when the gaps are provided.

The bearing receiving plate 530 is formed in a ring-shaped structure, and may be divided into a horizontal plate 531 having a flat structure in a horizontal direction, and a vertical plate 532 curvedly extending in a vertical direction from an inner diameter side of the horizontal plate 531. Such a bearing receiving plate 530 may be injection-molded by a plastic (resin) material, so that the horizontal plate 531 and the vertical plate 532 can be integrally formed. In this case, the plastic used to form the bearing housing plate 530 is not limited to a specific material as long as it meets the reference physical properties such as corrosion resistance, durability, and rigidity.

In addition, the bearing receiving plate 530 is formed with a first bearing receiving portion 540 for receiving the first group of bearings 510 and a second bearing receiving portion 550 for receiving the second group of bearings 520.

The first bearing receiving portion 540 is formed on the horizontal plate 531 of the bearing receiving plate 530, and a plurality of first bearing receiving portions 540 are formed on the annular horizontal plate 531 at predetermined intervals, and the first bearing receiving portions 540 are formed in a quadrangular hole shape corresponding to a sectional shape of the first group bearing so that the first group bearing 510 can be inserted into the first bearing receiving portions 540.

The second bearing receiving portion 550 is formed on the vertical plate 532 of the bearing receiving plate 530, and a pair of supporting members for supporting both sides of the ball bearings are formed on the second bearing receiving portion 550, protruding from a distal end side of the vertical plate 532 toward an outer side of an edge of the horizontal plate 531 (back to the center of the horizontal plate), and a plurality of pairs are formed along the edge of the vertical plate 532 at predetermined intervals.

At this time, the second bearing housing portion 550 is positioned on the same straight line as the first bearing housing portion 540 in the vertical direction with respect to the formation position of the second bearing housing portion 550, and thus, when the bearing portion 500 is viewed from above, the first bearing housing portion 540 and the second bearing housing portion 550 may be overlapped (laminated) in a structure.

The bearing part 500 as described above functions to reduce the friction force generated when the rotating plate rotates between the upper fixing plate 300 and the lower fixing plate 200, and since the first and

second bearings

510 and 520 are positioned on the same straight line in the vertical direction, the load transmitted from the second bearing 520 in the vertical direction is supported (dispersed) by the first bearing 510, so that the maximum allowable load range of the seat rotating apparatus can be expanded.

In addition, since there is substantially no gap between the second group bearing 520 and the third bending part 410 of the rotating plate 400, horizontal and vertical movements (vertical and horizontal movements of the third bending part of the rotating plate) can be restricted, thereby preventing the rotating plate 400 from being shaken or separated from the upper and

lower fixing plates

300 and 200 and minimizing frictional noise. In addition, the first and

second bearings

510 and 520 are formed in one bearing receiving plate 530, so that the manufacturing of the bearing portion 500 and the arrangement (installation space) into the seat swivel device can be simplified. Meanwhile, since the bearing receiving plate 530 of the bearing portion 500 is made of a plastic material, the weight of the seat swivel can be reduced.

Fig. 5 is an exploded perspective view of a swivel seat provided with a swivel device for a vehicle according to another embodiment of the present invention. Fig. 6 is a sectional view of a seat rotating apparatus for a vehicle according to another embodiment of the present invention. Fig. 7 is an enlarged view of a main portion illustrating a state in which a stopper seat 610 is combined on the upper fixing plate illustrated in fig. 5.

Referring to fig. 5 to 7, a seat rotating apparatus for a vehicle according to another embodiment of the present invention is further provided with a rotation locking part 600, compared to the above-described embodiments.

The rotation locking part 600 is used to lock the rotation plate 400 such that the rotation plate 400 cannot be further rotated when rotated to a preset angle, and is formed to be able to manually operate the rotation and fixation of the seat. Such a rotation locking part 600 includes a stopper seat 610 and a fixing means 620.

The stopper seats 610 are formed in a structure corresponding to the locking pieces for coupling with the fixing device 620, and at least one pair of stopper seats 610 are formed at an angle of 180 ° to each other on the upper side of the upper fixing plate 300. The stopper seat 610 is formed with a predetermined curvature corresponding to an edge side of the upper fixing plate 300, and a catching hole is formed at a predetermined position of the stopper seat 610.

Specifically, the stopper seat 610 is formed in a curved structure corresponding to the edge-side curved shape of the upper fixing plate 300, and the stopper seat 610 is formed with a lower horizontal surface 611, a vertical surface 612, an upper horizontal surface 613, a latching hole 614, and a guide surface 615 formed at one side of the upper horizontal surface 613.

The lower horizontal surface 611 serves as a surface closely fixed to a horizontally disposed lower surface of the upper fixing plate 300 which is formed to be bent, and a plurality of connection holes for connecting the upper fixing plate 300 are formed on the lower horizontal surface 611.

The vertical surface 612 serves as a surface that is bent to extend perpendicularly from the lower horizontal surface 611, and when the stopper seat 600 is fixed to the upper fixing plate 300, the vertical surface 612 is disposed at a predetermined interval from the vertical surface of the upper fixing plate 300 to form a space 616 for corresponding to the vertical surface bent to be formed in the upper fixing plate 300.

The upper horizontal surface 613 is formed to be bent horizontally from the vertical surface 612 toward the outside (a direction away from the center of the upper fixing plate), and the upper horizontal surface 613 is tightly fixed to the horizontally arranged upper surface of the outermost corner side formed by the bending in the upper fixing plate 300.

The locking hole 614 is formed in a substantially quadrangular hole shape on the upper horizontal surface 614, so that a space 616 formed between the vertical surface 612 of the stopper base 600 and the vertically arranged surface of the upper fixing plate 300 can be opened. Accordingly, the rotation of the rotating plate 400 to which the fixing device 620 is coupled is restricted by introducing (inserting) the locking part of the fixing device moving along the guide surface 615 into the locking hole 614. A stopper 617 is formed on one side of the locking hole 614 so as to prevent the locking portion moving along the guide surface 615 from passing through the locking hole 614.

The stopper 617 is formed to extend and curve upward from one side of the latching hole 614 to serve as a safety device for preventing the latching portion of the fixing device 620 from passing over the latching hole 614 due to an excessively high rotation speed of the rotating plate 400.

When the rotation plate 400 rotates rapidly, the stopper 617 collides with the locking portion passing through the locking hole 614 to block the movement of the locking portion, and a damper 618 is formed on the stopper 617 to absorb impact or vibration noise generated by the collision between the locking portion and the stopper 617. Here, the shock absorbing member 618 may be formed in a structure in which a shock absorbing member is inserted into the end of the stopper, or the shock absorbing member 618 may be implemented in various forms and methods by a structure in which a shock absorbing member is adhered to a side surface contacting the fixing device 620.

The guide surface 615 for guiding the locking portion of the fixture 620 to move toward the locking hole 614 of the stopper seat 610 may be formed by adopting a structure in which one side of the horizontal surface 613 in a direction in which the locking portion of the fixture 620 moves to approach is partially cut to form a remaining portion, and the remaining portion is formed to be inclined toward the direction of the lower horizontal surface 611, thereby forming the guide surface 615. In more detail, one side of the remaining portion formed by cutting is inclined to be positioned below the end position of the locking portion of the fixture 620 moving along the upper fixing portion 300, thereby forming the guide surface 615. Accordingly, when the rotating plate 400 rotates, the locking portion of the fixing device 620 is guided along the guide surface 615 to the upper side where the locking hole 614 is formed while moving along the upper fixing plate 300, and the guided locking portion is inserted into the locking hole 614.

Fig. 8 is an exploded perspective view of the fixing device 620 illustrated in fig. 5. Fig. 9 is a view showing an operation state in which the rotating plate is unlocked by the fixing device shown in fig. 8.

Referring to fig. 8 and 9, the fixing means 620 is formed at an upper side of the rotating plate 400 as means for locking or unlocking the rotation of the rotating plate 400 by being coupled to or decoupled from the stopper 610, and the fixing means 620 includes a first latch part 630, a second latch part 640, a lever part 650, and an actuator 660.

The first latch part 630 is capable of seesawing

In order that the locking part makes an action of being drawn into or out of the locking hole 614 of the stopper seat 610 by the above-mentioned seesaw movement, the first locking part 630 includes a first support seat 631, a first connection plate 632, a support pin 633, and a spring 634.

The first support seat 631 is to support the first connection plate 632, and is formed with a support surface 631a having a quadrangular flat plate shape and a first fixing surface 631b extended and bent in a vertical direction from both side surfaces of the support surface 631a, and a connection hole to which a support pin 633 is connected is formed at an upper end side of the first fixing surface 631 b.

The first connection plate 632 is configured to move vertically in a seesaw manner with a support pin 633 coupled with the first support base 631 as a rotation center to selectively couple to and decouple from the stopper base 610, and the first connection plate 632 is formed in a rectangular flat plate shape, and one end of the first connection plate 632 is formed with a locking portion 632a bent downward to be able to be introduced into the locking hole 614 of the stopper base 610, and the other end is formed with a first linking portion 632b bent upward to be able to link with the second locking portion 640.

In addition, a second fixing surface 632c, which is partially extended and bent upward, is formed at a predetermined portion (middle position) of both side surfaces of the first connection plate 632, and a connection hole for inserting the support pin 633 is formed at an upper end side of the second fixing surface 632 c. Here, a "T" shaped washer 635 is inserted into the coupling hole of the first fixing surface 631b and the coupling hole of the second fixing surface 632 c.

The structure of the "T" shaped washer 635 enables the support pin 633 to be easily and stably coupled to the coupling hole of the first fixing surface 631b, while the "T" shaped washer 635 can minimize friction between the first coupling plate 632 and the support pin 633 when the first coupling plate 632 rotates centering on the support pin 633. Here, the "T" shaped washer 635 may be made of a variety of materials, but is preferably made of a plastic material having a low coefficient of friction and relatively easy to reduce manufacturing costs and reduce noise.

The spring 634, which is a structure that provides the latch portion 632a with a force that can always urge the latch portion 632a to move (or be disposed) downward, is located between the second fixing surfaces 632c and is coupled to the support pin 633. As described above, when the force is not transmitted to the first interlocking portion 632b after the locking portion 632a is drawn out from the stopper seat 610, the spring 634 urges the locking portion 632a to return to the initial position in time.

The second latch portion 640 is interlocked with the first latch portion 630 to apply a downward force to the first interlocking portion 632b of the first link plate 632, thereby releasing the engagement state of the latching portion 632a with the latching hole 614 of the stopper holder 640, and the second latch portion 640 is arranged on the rotating plate 400 to be aligned with the first latch portion 630, thereby being interlocked with the operation of the first latch portion 630.

Such a second latch portion 640 may include a second support seat 641, a second connection plate 642, a support pin 643, and a spring 644.

At this time, the second latch portion 640 has similar structural elements and coupling structures to those of the first latch portion 630 except for the bent portions at both end sides of the second connection plate 642, and here, the structures of the second support seat 641, the support pin 643, and the spring 644 of the second latch portion 640 are substantially the same as those of the first support seat 631, the support pin 633, and the spring 634 of the first latch portion 630, and thus, a detailed description thereof will be omitted. In addition, the second latch portion 640 has substantially the same structural elements as the first latch portion 630 except for the second connection plate, but is illustrated using different reference numerals for the convenience of understanding the present invention.

The second connecting plate 642 of the second latch portion 640 is formed in a rectangular flat plate shape similar to the first connecting plate 632, and a second fixing surface 642c is formed at a predetermined position on both side surfaces of the second latch portion 640 in the same manner as the first connecting plate 632, so that the second connecting plate 642 can seesaw up and down about a support pin 643 coupled with the second support seat 641 as a rotation center, in which point the second connecting plate 642 is similar to the first connecting plate 632.

However, the second link plate 642 is different from the first link plate 632 in that a second interlocking portion 642a is formed at one end thereof, the second interlocking portion 642a is interlocked with the first interlocking portion 632b of the first link plate 632 by seesaw movement, and a rod coupling portion 642b is formed at the other end of the second link plate 642.

The second linkage portion 642a is formed at one end of the second connection plate 642 on the side close to the first linkage portion 632b of the first connection plate 632, the distal end side of the second linkage portion 642a is formed bent upward in a mutually symmetrical fashion with the first linkage portion 632b such that the distal end side of the second linkage portion 642a is located more upward than the distal end side of the first linkage portion 632b, and the second linkage portion 642a is arranged to partially overlap the first linkage portion 632 b. Meanwhile, when the second linkage portion 642a is positioned above the first linkage portion 632b, a gap of a predetermined interval is formed between the second linkage portion 642a and the first linkage portion 632 b. At this time, the gap functions to make the first latch portion 630 less responsive to the action by the second latch portion 640. That is, a temporal and mechanical gap is formed so that the first latch portion 630 does not need to be operated to immediately respond to the operation of the user.

In addition, the spring 644 provided on the second latch portion 640 applies a force to the second interlocking portion 642a that always urges the second interlocking portion 642a upward, so that the second interlocking portion 642a maintains a gap of a preset interval from the first interlocking portion 632b, while the second interlocking portion 642a does not normally come into contact with the first interlocking portion 632b, whereby the first interlocking portion 632b comes into contact with the second interlocking portion 642a only by an operation of the occupant.

The lever coupling portion 642b is formed at the other end opposite to the end where the second linkage portion 642a is formed, and is formed in a flat shape without bending. A lever portion 650 for a passenger to hold and operate is connected to the function lever connection portion 642 b.

The rod portion 650 serves as a kind of handle connected to the rod coupling portion 642b as mentioned above to be held by a passenger to apply force to the rod portion 650. Such a lever portion 650 is formed with a handle portion 651 for a passenger to hold and a lever connecting portion 652, and the lever connecting portion 652 is formed to protrude from one side surface of the handle portion 651 so as to be inserted into and connected to the lever connecting portion 642b inside the lever connecting portion 652.

Fig. 10 is an operation state diagram of a seat rotating apparatus according to another embodiment of the present invention.

Referring to fig. 10, first, the first latch portion 630 of the fixing device 620 formed at the rotating plate 400 is coupled to the stopper seat 610 formed at the upper fixing plate 300, so that when the occupant pulls up the lever portion 650 in order to rotate the seat 30 in a state of locking the rotation of the seat 30, the second interlocking portion 642a of the second latch portion 640 moves downward by a seesaw type action, thereby pressing down the first interlocking portion 632b of the first latch portion 630.

The first link plate 632 makes a seesaw motion by the first link portion 632b moving downward by the second link portion 642a, and the latching portion 632a is drawn out of the latching hole 614 of the stopper 610 as it is lifted upward.

While the locking portion 632a is drawn out of the locking hole 614, the occupant rotates the seat 30, and while the occupant rotates the seat 30, the lever portion 650 is released.

At the moment when the occupant releases the lever 650, the latch portion 632a of the first link plate 632 is moved downward by the spring 634, and the first interlocking portion 632b on the opposite side is moved upward to return to the initial position. Meanwhile, the second linkage portion 642a of the second connecting plate 642 is moved upward to be restored to the initial position by the spring 644 formed on the second latch portion 640, wherein the above-described action of the second linkage portion 642a is not performed by the contact with the first linkage portion 632b, whereby the lever portion 650 is restored to the initial position.

As described above, the process from the lever part 650 being moved upward by the passenger to the restoration to the original position after the unlocking of the rotating plate 400 is performed in a relatively short time.

In addition, the locking portion 632a of the first connection plate 632, which is drawn out from the stopper 640 and then returned to the initial position, rotates clockwise as shown in the drawing together with the rotation plate 400 along with the upper fixing plate 300 in a state of being spaced apart from a vertical plane formed by bending the upper fixing plate 300 by a predetermined interval.

The locking portion 632a moving in the clockwise direction moves again along the inclined guide surface 615 of the stopper seat 610, where the stopper seat 610 is formed at a position corresponding to an angle of 180 ° with respect to the stopper seat formed at the initial position, and when the locking portion 632a guided along the guide surface 615 is located at the locking hole 614, the locking portion 632a is moved (reset) downward by the spring 634 of the first locking portion 630, so that the locking portion 632a is introduced into the locking hole 614 to realize the movement of the locking rotation plate 400.

Meanwhile, in the case where it is necessary to rotate the seat 30 to the initial position again, the seat 30 may be restored to the initial position by repeatedly performing the above-described sequence.

Fig. 11 is an exploded perspective view of a swivel seat provided with a seat swivel device for a vehicle according to still another embodiment of the present aspect. Fig. 12 is a sectional view of an electric seat swivel device for a vehicle according to still another embodiment of the present invention. Fig. 13 is an exploded perspective view of the fixing device illustrated in fig. 11.

Referring to fig. 11 to 13, in contrast to the other embodiment described above, the seat swivel device for a vehicle according to the still another embodiment of the present invention further includes an actuator 660 for driving the second connection plate 642 and a swivel driving unit 700 for rotating the swivel plate 400 in an electric manner, which are provided in the fixing device 620.

First, an actuator 660 is formed on the second latch portion 640 as a structure for driving the second connection plate 642 to operate, and specifically, the actuator 660 is activated in accordance with an electric signal, thereby applying a force to the second connection plate 642 such that the second linkage portion 642a of the second connection plate 642 is moved downward. Such an actuator 660 includes a start motor 661, a pushing gear 662, and a pushing boss 663 driven by an electric signal.

The starter motor 661 is driven in accordance with an electric signal applied through an operating device such as a switch formed in the vehicle interior, specifically, in a position where an occupant can operate, such as a vehicle instrument panel or a seat, and is formed with a worm wheel 661 a.

The pushing gear 662 is rotated by the starter motor 661, and a gear tooth profile 662a is formed on an outer circumferential side of the pushing gear 662 to mesh with and interlock with a worm gear 661a of the starter motor 661, so that the pushing gear 662 can operate together with the starter motor 661 by a worm-gear screw interlock method. The pushing gear 662 is fixed to a support pin 643 of the second latch portion 640 by a fixing pin 662b and is rotatable about the fixing pin 662 b.

A push protrusion 663 is formed at one side of the push gear 662 to transmit a force to move it downward to the second coupling portion 642a through the push gear 662 rotated by the starter motor 661.

In addition, the actuator 660 is further provided with a housing 664 for covering the starter motor 661, the pushing gear 662, and the pushing protrusion 663, so that foreign substances can be prevented from entering or being subjected to external impact by the housing 664.

The rotation driving unit 700 is configured to unlock the rotation plate 400 by the rotation locking unit 600 and to electrically rotate the rotation plate 400, and the rotation driving unit 700 includes a gear holder 710, a rotation gear 720, a motor holder 730, and a driving motor 740.

The gear bracket 710 is coupled and fixed to the upper fixing plate 300, and in detail, the gear bracket 710 is formed with a plurality of coupling holes for coupling the rotating gear 720, and is formed in a ring plate shape with a hole formed in the middle, and opposite sides of the ring plate are extended to form a structure of a bracket supporting part 711, and the bracket supporting part 711 is formed with a plurality of coupling holes for coupling with the upper fixing plate 300.

The rotary gear 720 is fixed on the ring plate of the gear holder 710 and may be formed as a Spur gear (Spur gear). Here, the rotary gear 720 may be made of a general metal material, but in order to reduce the weight of the seat and to improve the fuel consumption rate accordingly, the rotary gear 720 may be made of a plastic material having a certain strength.

The motor mount 730 is coupled and fixed to the rotating plate 400, and has a quadrangular plate shape with a hole formed in the middle thereof, and both sides of the motor mount 730 are formed with a plurality of coupling holes for coupling the rotating plate. In addition, at least one side of the hole formed at the middle portion side of the motor mount 730 is formed with a motor insertion hole 731 positioned on the same straight line. Here, the motor insertion hole 731 may be formed only on one side of the middle side hole of the motor holder 730 as a hole for inserting a part of the rotation shaft of the driving motor 740, but a pair of motor insertion holes 731 may be formed symmetrically with respect to the middle side hole, so that it is possible to accommodate a change in the installation position of the driving motor 740 depending on the installation position of the seat (driver seat, passenger seat) and the seat rotation direction.

The driving motor 740 is coupled and fixed to the motor mount 730 to enable a part of a rotation shaft of the driving motor to be inserted into the motor insertion hole 731, and a Spur gear (Spur gear) is provided on the rotation shaft for being engaged with the rotation gear 720 to be interlocked therewith. Here, although the rotation gear 720 and the gear formed on the driving shaft of the driving motor 740 are disclosed as spur gears in the present invention, the gear may be formed in various gear forms as long as the rotation gear can be rotated by the motor cooperating with the rotation gear, and the kind of the gear is not particularly limited.

Fig. 14 is a diagram showing an operation state in which the rotating plate 400 is manually unlocked by the fixing device 620 shown in fig. 13. Fig. 15 is a view showing an operation state in which the rotating plate 400 is electrically unlocked by the fixing device 620 shown in fig. 13. Fig. 16 is an operation state diagram of a seat rotating apparatus according to still another embodiment of the present invention.

The operation of the seat rotating apparatus according to still another embodiment of the present invention will be described below with reference to fig. 14 to 16. Here, the seat swiveling apparatus for a vehicle according to still another embodiment of the present invention can perform locking and swiveling in accordance with manual and electric modes, and thus will be described in a manner divided into a manual seat swiveling mode and an electric seat swiveling mode.

1. Manual seat rotation

Referring to fig. 14, the first latch portion 630 formed at the fixing device 620 of the rotating plate 400 is coupled to the stopper seat 610 formed at the upper fixing plate 300, so that when the occupant pulls up the lever portion 650 in order to rotate the seat 30 in a state of locking the rotation of the seat 30, the second linkage portion 642a of the second latch portion 640 moves down by a seesaw type action, thereby pressing down the first linkage portion 632b of the first latch portion 630.

As described above, the process from the lever 650 being moved upward by the passenger to the unlocking rotation plate 400 and then being returned to the original position is accomplished in a relatively short time.

In addition, the locking portion 632a of the first connection plate 632, which is drawn out from the stopper 640 and then returned to the initial position, rotates clockwise as shown in the drawing together with the upper fixing plate 300 together with the rotation plate 400 in a state where the locking portion 632a is spaced apart from a vertical plane formed by bending the upper fixing plate 300 by a predetermined interval.

The locking portion 632a moving in the clockwise direction moves again along the inclined guide surface 615 of the stopper seat 610, the stopper seat 610 is formed at a position corresponding to the stopper seat formed at the initial position by an angle of 180 °, and the locking portion 632a guided along the guide surface 615 moves (returns) the locking portion 632a downward by the spring 634 of the first locking portion 630 when it is located at the locking hole 614, so that the locking portion 632a is introduced into the locking hole 614 to realize the movement of the locking rotation plate 400.

2. Electric seat rotation

Referring to fig. 15, the first latch part 630 of the fixing device 620 formed on the rotating plate 400 is coupled to the stopper seat 610 formed on the upper fixing plate 300, so that the occupant presses or touches the seat rotation button located in the vehicle interior (an instrument panel, a seat, a door trim, etc.) in order to rotate the seat 30 in a state in which the rotation of the seat 30 is locked.

When the occupant presses or touches the seat rotation button, the driving actuator 660 presses the second linkage portion 642a of the second connection plate 642, so that the first linkage portion 632b of the first connection plate 632 moves downward to release the locked state of the rotation plate 400. At this time, the actuator 660 is driven in the reverse direction to return to the initial position immediately after pressing the second linkage portion 642a, and the first connection plate 632 and the second connection plate 642 return to the initial positions.

In addition, the actuator 660 is driven to unlock the rotating plate 400, in other words, the locking portion 632a of the first connection plate 632 is drawn out from the stopper 610 so that the locking of the rotating plate 400 is unlocked, and at the same time, the driving motor 740 of the rotation driving unit 700 is driven. Accordingly, in a state where the driving motor 740 is fixed to the rotating plate 400, the rotating gear 720 is fixed to the upper fixing plate 300, and thus the rotating plate 400 moves relative to the upper fixing plate 300.

In addition, the locking portion 632a of the first connection plate 632, which is drawn out from the stopper 610 and restored to the initial position again, rotates clockwise as shown in the drawing together with the upper fixing plate 300 together with the rotation plate 400 in a state of being spaced apart from the vertical plane formed by bending the upper fixing plate 300 by a predetermined interval.

The locking portion 632a moving in the clockwise direction moves again along the inclined guide surface 615 of the stopper seat 610, the stopper seat 610 is formed at a position corresponding to an angle of 180 ° with the stopper seat formed at the initial position, and the locking portion 632a guided along the guide surface 615 moves (resets) the locking portion 632a downward by the spring 634 of the first locking portion 630 when it is located at the locking hole 614, so that the locking portion 632a is introduced into the locking hole 614 to realize the movement of the locking rotation plate 400.

Meanwhile, in the case where it is necessary to rotate the seat 30 to the initial position again, when the seat rotation button is operated again, the unlocking and locking of the rotation plate 400 are similarly achieved, and the driving direction is switched by the driving motor 700 such that the rotation direction of the seat 30 is changed in the opposite direction, thereby enabling the seat 30 to be restored to the initial position.

The seat rotating apparatus for a vehicle according to various embodiments of the present invention as described above is an apparatus for rotating the rotating plate 400 by 180 ° in the upper and

lower fixing plates

300 and 200, by providing bearings of a first group of bearings 510 and a second group of bearings 520, which are different types from each other, in an integrated bearing accommodating plate 530 injection-molded of a plastic material, wherein the first group of bearings 510 is located between the lower fixing plate 200 and the rotating plate 400, and the second group of bearings 520 is located between the upper fixing plate 300 and the rotating plate 400, it is possible to simplify the structure of the rotating apparatus and reduce the increase in manufacturing costs.

In addition, since the respective

bent portions

310, 210, 410 of the upper fixing plate 300, the lower fixing plate 200 and the rotating plate 400 are formed in a relatively simple structure and a space for accommodating the bearing portion 500 is formed to be small by the arrangement of the respective

bent portions

310, 210, 410, and at the same time, the first group of bearings 510 and the second group of bearings 520 adopt a structure located on the same straight line in the vertical direction, whereby not only an effect of reducing friction can be achieved, but also stable support, prevention of shaking (movement) and detachment, reduction of frictional noise, and the like can be achieved by dispersing a load applied to the rotating plate 400.

Further, the locking and unlocking of the seat 30 and the rotation of the seat 30 can be selectively switched by an electric operation or a manual operation, and in the case of the manual operation, the unlocking of the rotating plate 400 and the locking of the rotating plate 400 after the rotation can be automatically realized by a single simple operation without the occupant having to continuously operate (hold) the lever 620, whereby the convenience of the occupant can be greatly improved.

In the case of an electric operation, the occupant can automatically perform the process of being locked after the seat 30 is rotated in a state where the seat rotation button provided in the vehicle interior is operated to unlock the rotation device, thereby further improving the convenience of the occupant.

Meanwhile, the seat rotating apparatus can be manually operated, thereby rotating the seat even in a state where power is not supplied to the vehicle (before starting or at the time of an accident), thereby having an advantage of further maximizing convenience of a passenger by operating the seat in various situations.

In the above description, a person having ordinary knowledge in the art to which the present invention pertains can make various substitutions, modifications, and alterations to the present invention without departing from the scope of the technical idea of the present invention, and therefore, the present invention is not limited to the above embodiments and attached drawings, and various modifications can be realized by selectively combining all or a part of the respective embodiments.

Claims

1. A seat rotating apparatus for a vehicle, characterized by comprising:

a support plate installed on a floor in a vehicle compartment or a front-to-rear movement rail of a seat;

an annular lower fixing plate mounted on the support plate and having a first bent portion formed along an edge thereof;

an annular upper fixing plate which is fixedly connected to the lower fixing plate and the seat and is formed with a second bent portion which can be positioned within the first bent portion;

a rotating plate rotatably disposed between the lower fixing plate and the upper fixing plate, and having a third bending portion formed thereon so as to be positioned between the first bending portion and the second bending portion;

a bearing portion provided between the first bent portion and the third bent portion and between the second bent portion and the third bent portion for reducing friction generated when the rotation plate rotates,

wherein the bearing portion includes:

a first set of bearings disposed between the first flexure and the third flexure;

a second set of bearings disposed between the second flexure and the third flexure;

an annular bearing accommodating plate on which bearing accommodating portions are formed for individually and rotatably accommodating the first group of bearings and the second group of bearings,

the bearing accommodating plate is provided with an annular horizontal plate and a vertical plate extending in an upward bending manner of the horizontal plate, the horizontal plate is provided with a first bearing accommodating part for accommodating the first group of bearings, and the vertical plate is provided with a second bearing accommodating part for accommodating the second group of bearings.

2. The seat rotating apparatus for vehicles according to claim 1, wherein the first set of bearings is formed as roller bearings and the second set of bearings is formed as ball bearings.

3. The seat rotating apparatus for a vehicle according to claim 1,

the first set of bearings is arranged in contact with the upper surface of the first bend and the lower surface of the third bend to form two contact lines,

the second group of bearings is formed with four contact points by the second and third flexures being arranged in a manner to wrap the second group of bearings in a spiral.

4. The seat swiveling apparatus for a vehicle according to claim 1, wherein the second bearing receiving portion is protrudingly formed from a tip of the vertical plate toward an outer edge of the horizontal plate such that the second bearing receiving portion is parallel to the first bearing receiving portion.

5. The seat rotating apparatus for a vehicle according to claim 1, wherein the bearing receiving plate is made by injection molding using a plastic material.

6. The seat rotating apparatus for a vehicle according to claim 1, wherein the rotating plate is formed in a quadrangular flat plate shape having a circular opening at a central portion thereof, and a reinforcing plate is provided at a lower surface corner side of the rotating plate.

7. The seat rotating apparatus for vehicle as claimed in claim 1, wherein a second hook is formed on the support plate to be capable of combining with a first hook formed on the seat for reinforcing dynamic strength and/or static strength.

8. A seat rotating apparatus for a vehicle, characterized by comprising:

a bearing portion provided between the first bent portion and the third bent portion and between the second bent portion and the third bent portion for reducing friction generated when the rotation plate rotates; and

and a rotation locking part including a pair of stopper seats and fixing means formed on the rotation plate to rotate together with the rotation plate, the stopper seats being provided on the upper fixing plate and being formed to be symmetrical to each other at an angle of 180 °, the stopper seats being formed with a locking hole to which the fixing means can be coupled and a stopper block formed at one side of the locking hole to prevent the fixing means from rotating beyond the locking hole, the stopper seats being capable of locking or unlocking rotation of the rotation plate by coupling or uncoupling with the fixing means.

9. A seat rotating apparatus for a vehicle, characterized by comprising:

a bearing portion provided between the first bent portion and the third bent portion and between the second bent portion and the third bent portion for reducing friction generated when the rotation plate rotates;

a rotation locking part including a pair of stopper seats and fixing means formed on the rotation plate to rotate together with the rotation plate, the stopper seats being provided on the upper fixing plate and being formed to be symmetrical to each other at an angle of 180 °, the stopper seats being formed with a locking hole to which the fixing means can be coupled and a stopper block formed at one side of the locking hole to prevent the fixing means from rotating beyond the locking hole, the stopper seats being capable of locking or unlocking rotation of the rotation plate by coupling or non-coupling with the fixing means; and

a rotation driving unit configured to rotate the rotation plate unlocked by the rotation locking unit by electrically driving the rotation plate.

10. The seat rotating apparatus for a vehicle according to claim 8 or 9, wherein the bearing portion includes:

an annular bearing receiving plate having bearing receiving portions formed thereon for individually and rotatably receiving the first and second sets of bearings.

11. The seat rotating apparatus for vehicles according to claim 10, wherein the first set of bearings is formed as roller bearings and the second set of bearings is formed as ball bearings.

12. The seat swiveling apparatus for a vehicle according to claim 10, wherein the bearing receiving plate is formed with a ring-shaped horizontal plate on which a plurality of first bearing receiving portions for receiving the first group of bearings are separately formed at predetermined intervals and a vertical plate extending upward from the horizontal plate, and the vertical plate is formed with a plurality of second bearing receiving portions for receiving the second group of bearings, the second bearing receiving portions being formed to protrude from a distal end of the vertical plate toward an outer side of an edge of the horizontal plate such that the second bearing receiving portions are positioned at an upper side of the first bearing receiving portions.

13. The seat rotating apparatus for a vehicle according to claim 10, wherein the bearing receiving plate is manufactured by injection molding using a plastic material.

14. The seat rotating apparatus for vehicle as claimed in claim 8 or 9, wherein a second hook is formed on the support plate to be capable of combining with a first hook formed on the seat for reinforcing dynamic strength and/or static strength.

15. The seat rotating apparatus for a vehicle according to claim 8 or 9,

the stopper seat includes:

a lower horizontal plane which is closely fixed on a horizontally arranged lower surface bent to be formed in the upper fixing plate and on which a plurality of coupling holes are formed for being mounted on the horizontally arranged lower surface of the upper fixing plate;

a vertical surface which is bent vertically from the lower horizontal surface to be capable of corresponding to a vertically disposed surface bent to be formed in an upper fixing plate, and which is disposed to be parallel to and spaced apart from the vertically disposed surface of the upper fixing plate at a preset interval when the stopper seat is provided on the upper fixing plate;

an upper horizontal plane which is formed to be bent from the vertical plane in a horizontal direction away from the center of the upper fixing plate and which is closely fitted on an outermost-corner-side horizontal upper surface bent in the upper fixing plate;

a guide surface formed by inclining a part of the upper horizontal surface in a direction of the lower horizontal surface for guiding movement of the locking portion of the fixing device into the locking groove.

16. The seat swiveling apparatus for a vehicle according to claim 15, wherein the locking hole is penetratingly formed on the upper horizontal surface to open a space formed between the vertical surface and a vertically disposed surface of the upper fixing plate.

17. The seat rotating apparatus for vehicles as claimed in claim 8 or 9, wherein a shock absorber is formed on the stopper block for reducing impact and noise generated by collision of the fixing device with the stopper block.

18. The seat rotating apparatus for a vehicle according to claim 8,

the fixing device includes:

a first latch portion selectively engageable with the stopper seat;

a second latch portion arranged on the same line as the first latch portion for transmitting a force to the first latch portion, the force causing the first latch portion to perform an engagement or disengagement action with the stopper seat; and

a lever part connected with the second latch part for being held by a passenger to be operated.

19. The seat rotating apparatus for a vehicle according to claim 9,

the fixing device includes:

a first latch portion selectively engageable with the stopper seat;

a second latch portion arranged on the same line as the first latch portion for transmitting a force to the first latch portion, the force causing the first latch portion to perform an engagement or disengagement action with the stopper seat;

a lever part connected with the second latch part for being held by a passenger to be operated; and

an actuator disposed on the second latch portion and capable of being driven by an electrical signal to actuate the second latch portion.

20. The seat rotating apparatus for a vehicle according to claim 18 or 19,

the first latch portion includes:

the support device comprises a first support seat and a second support seat, wherein the first support seat comprises a support surface and a first fixing surface, the support surface is in a quadrilateral flat plate shape, and the first fixing surface extends from two side surfaces of the support surface and is bent along the vertical direction;

a first connecting plate having a quadrangular plate shape and disposed inside the first supporting seat, one end of the first connecting plate being formed with a downwardly bent locking portion to be inserted into the locking hole of the stopper seat, and the other end thereof being formed with an upwardly bent first interlocking portion to be interlocked with the second locking portion, the first connecting plate being formed with a second fixing surface by bending a portion of both side surfaces thereof to extend upwardly;

a support pin penetrating and coupled to a first fixing surface of the first support seat and a second fixing surface of the first connection plate so that the first connection plate can be rotatably coupled in the first support seat; and

a spring coupled with the support pin for providing a force to the latch of the first connection plate to urge the latch to always move downward.

21. The seat rotating apparatus for a vehicle according to claim 18 or 19,

the second latch portion includes:

the second supporting seat comprises a supporting surface and a first fixing surface, the supporting surface is in a quadrilateral flat plate shape, and the first fixing surface extends from two side surfaces of the supporting surface and is bent along the vertical direction;

a second connecting plate having a quadrangular plate shape and disposed inside the second support base, one end of the second connecting plate being formed with a second interlocking part bent upward to transmit a force for moving the first interlocking part downward to the first interlocking part of the first connecting plate, and the other end thereof being formed with a rod coupling part for coupling with the rod part, the second connecting plate being bent to form a second fixing surface by extending a portion of both side surfaces upward;

a support pin penetrating through and connected to a first fixing surface of the second support base and a second fixing surface of the second connection plate so that the second connection plate can be rotatably connected to the inside of the second support base; and

a spring connected with the support pin for providing a force to the second linkage portion of the second connection plate to always urge the second linkage portion to move upward.

22. The seat rotating apparatus for a vehicle according to claim 21, wherein the second interlocking portion of the second latch portion is provided on an upper side of the first interlocking portion at a preset interval from the first interlocking portion of the first latch portion, and is arranged such that the second interlocking portion and the first interlocking portion partially overlap each other.

23. The seat rotating apparatus for a vehicle according to claim 19, wherein the actuator includes:

starting the motor;

a push gear connected to the support pin of the second latch unit and rotatable about the support pin in conjunction with the starter motor;

a push protrusion formed at one side of the push gear to transmit a force to move the second linkage portion of the second connection plate downward to the second linkage portion by the rotation of the push gear; and

a housing for covering the starter motor, the push gear and the push protrusion.

24. The seat rotating apparatus for a vehicle according to claim 9,

the rotation driving part includes:

a gear bracket provided on the upper fixing plate;

a rotary gear provided on the gear bracket;

a motor support provided on the rotation plate and formed with a motor insertion hole; and

a driving motor provided on the motor mount and having a part of a rotation shaft of the driving motor inserted into the motor insertion hole, the driving motor being interlocked with the rotation gear.