KR20200025321A - Seat swivel device of vehicle - Google Patents

Abstract

The present invention relates to a swivel device for a vehicle seat. An upper plate and a lower plate are directly mounted on a cushion frame and a seat rail without a separate connection bracket, thereby reducing the number of components and weight. In addition, a detachment prevention hook is installed adjacent to the cushion frame of the upper plate and the lower plate and a seat rail mounting point, thereby improving anti-deformation performance of the upper plate.

Description

Seat swivel device of car {SEAT SWIVEL DEVICE OF VEHICLE}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seat swivel device of an automobile. More specifically, when a swivel device is applied to a seat in seat (BIS) type, the support strength of the seat belt is made stronger by stiffening the seat fixing state by the swivel device. It relates to a seat swivel device of a vehicle so that can be improved.

In general, two or more rows of cars may be provided with a rotatable seat that can be rotated laterally and rearward in order to improve conversational convenience between passengers during driving. Such a rotatable sheet is called a swivel sheet, and a rotating device applied to the swivel sheet is a swivel device.

The swivel device is a device that rotatably connects the cushion frame of the seat to the seat rail fixed to the floor, and is installed between the lower plate mounted on the seat rail, the upper plate mounted on the cushion frame, and the lower plate and the upper plate. It consists of a structure including a rolling member that enables relative rotation between the two. As the rolling member, one having a plurality of balls or rollers is usually used in a circular retainer.

Meanwhile, since a rolling member for rotation is installed between the lower plate and the upper plate, the lower plate and the upper plate are usually manufactured in a disc shape, and the swivel device also basically has a disc shape. However, the seat rail connected to the swivel device is a pair of linear members arranged in parallel in the front and rear direction of the vehicle, and since the cushion frame of the seat cushion is also rectangular in shape, the circular swivel device is geometrically coupled with the seat rail and the cushion frame. It is not easy to do.

Therefore, additional connection brackets are additionally applied to the upper and lower portions of the swivel device, and the connecting brackets are mounted on the seat rail and the cushion frame, thereby increasing the number of parts.

On the other hand, in the case of the swivel seat, it is difficult to mount the end of the seat belt (that is, the seat belt anchor) on the vehicle body side because the seat rotates. This is because when the end position of the seat belt is fixed to the vehicle body, the occupant support position by the seat belt is continuously changed according to the rotational position of the seat, so that the occupant cannot be stably fixed.

Therefore, in the case of the swivel seat, the seat belt of the BIS (Belt in seat) type (all the fixed points of the seat belt are formed on the seat) is installed. If the rigidity of the swivel device is not good because it is transmitted to the seat, the fixed state of the seat is not firm, and as a result, occupant support strength of the seat belt is lowered, resulting in a problem of deterioration in safety.

Republic of Korea Patent Publication No. 10-2003-0080512 (published Oct. 17, 2003)

Accordingly, an object of the present invention is to provide a vehicle swivel device capable of reducing the number of parts and improving the occupant support strength of the seat belt.

The present invention for achieving the above object, the upper plate connected to the cushion frame side of the seat, the lower plate connected to the seat rail side of the floor, and the lower plate is installed between the upper plate and the lower plate It includes a rolling member to enable the rotation of the upper plate, wherein the upper plate is formed in a size corresponding to the size of the cushion frame is mounted in direct contact with the cushion frame without using an intermediate connecting member, the lower plate Is formed in a size corresponding to the gap between the seat rails on both sides is mounted in a direct contact state without using the intermediate connecting member to the seat rail.

A separation prevention hook is installed between the upper plate and the lower plate, and the separation prevention hook is composed of an upper hook mounted on the upper plate and a lower hook mounted on the lower plate, and the upper hook and the lower hook are each J-shaped. The engaging portions of each other are hung in the vertical direction.

A damper for supporting the lower end of the upper hook is provided.

The upper plate and the lower plate are formed in a square shape, and the upper plate and the lower plate are mounted at the four corner portions of the cushion frame and the seat rail via bolts, and the release preventing hook is the cushion frame of the upper plate and the lower plate. And adjacent to the seat rail mounting point.

An upper reinforcing plate is provided on the lower surface side of the upper plate to form a two-ply structure spaced apart from the upper plate by a predetermined interval, and a lower reinforcing plate is formed on the upper surface side of the lower plate to form a two-ply structure spaced apart from the lower plate. do.

A second hook is installed between the upper plate and the lower plate, and the second hook has a structure in which the upper hook mounted on the upper plate and the lower hook mounted on the lower plate are hung with each other in the vertical direction. Is installed closer to the rotation center of the swivel device than the separation prevention hook.

The upper hook and the lower hook of the separation prevention hook and the upper hook and the lower hook of the second hook have an arc-shaped planar shape which forms a part of concentric circles about the central axis of rotation of the swivel device.

According to the present invention as described above, the upper plate and the lower plate of the swivel device is formed in a rectangular shape, the upper plate and the lower plate is directly mounted on the cushion frame and the seat rail without a separate connection bracket, so that the number of parts is reduced, There is an effect that the device configuration is reduced.

In addition, the separation prevention hook composed of the upper hook and the lower hook is installed at the four corners closest to the point where the cushion frame and the seat rail are connected to the upper plate and the lower plate, respectively, to effectively suppress the upper deformation of the upper plate. In this case, it is possible to maintain the seat firmly in the event of a crash, thereby improving the occupant support strength of the seat belt, thereby improving safety.

In addition, the lower plate is provided with a damper for supporting the lower portion of the lower hook to prevent downward deformation (sag) of the upper plate.

As described above, the upper plate and the lower plate of the upper plate are prevented from being deformed, thereby preventing the swivel device from failing and smoothly rotating.

1 is a perspective view of a seat swivel device of a vehicle according to the present invention.
2 is a cross-sectional view taken along the line AA of FIG.
Figure 3 is a view of the upper plate and the lower plate removed in Figure 1;
4 is an exploded perspective view of FIG. 1;
5 is an installation state diagram and an enlarged view of a seat swivel device of a vehicle according to the present invention.
Figure 6 is a view showing the test of the support strength of the seat belt in the BIS type seat is installed seat swivel device of the vehicle according to the present invention.

As the present invention allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the written description. However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention. The thickness of the lines or the size of the components shown in the accompanying drawings may be exaggerated for clarity and convenience of description.

In addition, terms to be described below are terms defined in consideration of functions in the present invention, which may vary depending on the intention or precedent of a user or an operator. Therefore, definitions of these terms should be made based on the contents throughout the specification.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view of a seat swivel device of a vehicle according to the present invention, the seat swivel device (S) of the car according to the present invention is the upper plate 10, the lower plate 20, the rolling members 30, 31, detachment And a prevention hook 40.

The upper plate 10 and the lower plate 20 have a substantially square flat plate shape, and the cloud members 30 and 31 and the separation preventing hook 40 are disposed therebetween.

Bolts 15 for mounting the cushion frame 140 (see FIG. 5) of the seat are provided at the left and right ends of the seat at the four corners of the upper plate 10. The bolt 15 is provided in pairs at each corner, and the head of the bolt 15 is welded to the lower surface of the upper plate 10.

It can be seen in FIG. 1 that the bolt hole 25 is also formed at the position on the lower plate 20 corresponding to the position of the bolt 15. The lower plate 20 is attached to the seat rail (exactly, the upper rail upper surface of the seat rail) using the bolt inserted into the bolt hole 25.

As shown in FIGS. 1,2 and 4, circular inclined portions 11 and 21 are formed inside the upper plate 10 and the lower plate 20, and between these circular inclined portions 11 and 21, respectively. The upper cloud member 30 is installed.

The upper rolling member 30 is provided with balls at regular intervals in the retainer of the circular ring shape, the balls are in contact with the circular inclined portion (11, 21).

The lower plate 20 is formed with a circular hole penetrating the inner side of the circular inclined portion 21. Through the hole, the guide plate 50, which is a circular annular plate, is fixed to the lower surface of the upper plate 10 with bolts.

The outer edge portion of the guide plate 50 is located below the circular inclined portion 21 of the lower plate 20 and is formed with a circular inclined portion 51 at an angle corresponding to the circular inclined portion 21.

Between the circular inclined portion 21 of the lower plate 20 and the circular inclined portion 51 of the guide plate 50 is provided with a lower cloud member 31 in contact with them. The lower cloud member 31 has the same configuration as the upper cloud member 30.

By the above structure, the upper plate 10 and the guide plate 50 are integrally rotated together, and the circular inclined portion of the upper plate 10 on the upper and lower portions of the circular inclined portion 21 of the lower plate 20, respectively. 11 and the circular inclined portion 51 of the guide plate 50, the cloud member 30, 31 is provided between the circular inclined portions (11, 21, 51) lower plate 20 Rotation of the upper plate 10 with respect to is made smoothly. The guide plate 50 guides the rotation of the upper plate 10 so that the upper plate 10 can be more accurately and smoothly rotated.

2 and 3, the upper plate 10 and the lower plate 20 is provided with a respective reinforcing plate 70 (upper reinforcing plate, 80; lower reinforcing plate). These reinforcing plates (70, 80) is welded and fixed to the upper plate 10 and the lower plate 20, the upper plate 10 and the lower plate 20 is spaced apart a predetermined distance from the two-ply structure By forming, the rigidity of the upper plate 10 and the lower plate 20 is reinforced.

The upper reinforcement plate 70 is mounted on the lower surface side of the upper plate 10, and the lower reinforcement plate 80 is mounted on the upper surface side of the lower plate 20.

3 and 4, the upper reinforcement plate 70 is formed in the shape corresponding to the left and right side edge portion of the upper plate 10 are interconnected one by one in the front and rear direction of the sheet, the lower reinforcement plate (80) The four corner portions corresponding to the lower plate 20 are respectively manufactured and mounted. The upper reinforcing plate 70 is shown only one side and the other side is not shown.

The separation preventing hook 40 includes an upper hook 41 and a lower hook 42. The upper hooks 41 and the lower hooks 42 are J-shaped horizontally mounted portions formed at one end thereof by welding to the lower surface of the upper plate 10 and the upper surface of the lower plate 20, respectively.

In the upper reinforcement plate 70 and the lower reinforcement plate 80, holes 71 and 81 are formed in corresponding portions of the upper hook 41 and the lower hook 42, respectively, and the upper is formed through the holes 71 and 81, respectively. The hook 41 and the lower hook 42 protrude into the space between the upper plate 10 and the lower plate 20. The engaging portion of the upper hook 41 is installed to face toward the center of the swivel device S, and the engaging portion of the lower hook 42 is installed so as to face the outside of the swivel device S. Lose.

In addition, a damper 60 supporting the lower surface of the engaging portion of the upper hook 41 is provided on the upper surface of the mounting portion of the lower hook 42. The damper 60 also protrudes upward through the hole 81 formed in the lower reinforcement plate 80 to directly contact and support the lower surface of the engaging portion of the upper hook 41.

The planar shape of the upper hook 41, the lower hook 42, and the damper 60 (viewed from above) is formed in an arc shape that forms part of a concentric circle about the central axis of the swivel device S. As shown in FIG. Accordingly, between the upper hook 41 and the lower hook 42 and the upper hook 41 when the swivel device S is operated, that is, when the upper plate 10 is rotated with respect to the lower plate 20 having a fixed position. Since the interference does not occur between the dampers 60, the swivel device S can smoothly rotate.

The separation preventing hook 40 is installed in the corner of the swivel device (S), as shown in FIG. That is, the upper hook 41 is installed at the corner of the upper plate 10 and the lower hook 42 is installed at the corner of the lower plate 20. The separation prevention hook 40 is disposed on a concentric circle about the central axis of the swivel device S, so that the separation prevention hook 40 has a radius as large as possible (the separation prevention hook at the bolt 15 located at the corner of the corner part). If the center of the outer surface of the (40) is close to the position), one end of the separation prevention hook 40 is in a state of being inserted between the pair of bolts (15).

That is, the separation preventing hook 40 and the damper 60 are installed close to the cushion frame and the seat rail mounting point (connection point) of the upper plate 10 and the lower plate 20.

The swivel device S has another separation preventing hook 130 in addition to the separation preventing hook 40. Another departure prevention hook 130 will be referred to as the second hook 130 to distinguish from the departure prevention hook (40).

The second hook 130 is installed at the center of the front and rear ends of the swivel device S, and corresponds to the upper hook 131 welded to the lower surface of the upper plate 10 and the lower lower reinforcement plate 80. The lower hook 132 (ie, the lower hook 132 connects both lower reinforcement plates 80), both ends of which are bolted to an end thereof. The upper hook 131 and the lower hook 132 of the second hook 130 is also formed in a J shape has a structure in which the engaging portions on both sides are hung in the vertical direction. In addition, the second hook 130 also has an arc shape that forms part of a concentric circle centered on the central axis of the swivel device S in plan view. In the figure, only the upper hook 131 of the second hook 130 is shown on one side, and the other side is omitted.

The concentric circle in which the second hook 130 is located has a smaller radius than the concentric circle in which the separation preventing hook 40 is located. That is, in the swivel device S, the second hook 130 is located on a radius closer to the center than the separation preventing hook 40. Therefore, when the upper plate 10 rotates, the upper hook 41 of the separation preventing hook 40 may not interfere with the lower hook 132 of the second hook 130.

1 and 3, the driven gear 120 is fixed to the central lower surface of the upper plate 10 with a bolt. The lower surface of the lower plate 20 is mounted with a motor mounting bracket 90 crossing the front and rear directions, and the motor 100 is mounted on the lower surface of the motor mounting bracket 90. The motor 100 is of a type equipped with a gear box integrally, the output shaft is provided with a drive gear 110, the drive gear 110 passes through the motor mounting bracket 90 and protrudes upwards to the driven gear 120 Is matched with).

As shown in FIG. 5, the swivel device S is installed between the seat rail 150 and the cushion frame 140. As described above, the lower plate 20 is mounted on the seat rail 150, and the cushion frame 140 is mounted on the upper plate 10.

Since the seat rail 150 is fixed to the floor in a state that cannot be rotated, the lower plate 20 also cannot be rotated, and the upper plate 10 rotates through the rolling members 30 and 31. Since the cushion frame 140 mounted on the upper plate 10 may be rotated. That is, the seat is mounted on the seat rail 150 via the swivel device S, and thus the seat may be moved back and forth by the seat rail 150 and rotated by the swivel device S. FIG.

Hereinafter, the effect of the present invention will be described.

In the swivel device S according to the present invention, the upper plate 10 and the lower plate 20 are manufactured in a rectangular flat shape having a size suitable for the size of the cushion frame 140 and the installation interval of the seat rail 150. Since the cushion frame 140 and the seat rail 150 are mounted directly without a medium (connection bracket), the number and weight of parts are reduced, and the device configuration is simplified.

The upper plate 10 and the lower plate 20 are provided with an upper reinforcing plate 70 and a lower reinforcing plate 80 so as to form a two-ply structure, respectively. This is one cause of preventing the upper / lower deformation of the upper plate (10).

In addition, the upper reinforcing plate 70 and the lower reinforcing plate 80 is formed with holes 71 and 81, the upper hook 41 and the lower hook 42 constituting the separation prevention hook 40 is the hole It protrudes into the space between the upper plate 10 and the lower plate 20 through 71 and 81. At this time, since the upper hook 41 and the lower hook 42 are partially welded to the corresponding portions of the holes 71 and 81, the upper hook 41 and the lower hook 42 are respectively the upper plate 10. And the upper reinforcing plate 70 and between the lower plate 20 and the lower reinforcing plate 80 act as a reinforcing structure for connecting in the vertical direction. Accordingly, the rigidity of the upper plate 10 and the lower plate 20 is further improved, and thus the effect of preventing deformation of the upper plate 10 in the up / down direction can be further increased.

When the motor 100 is operated, the driving motor 110 is rotated, the driven motor 120 engaged with the driving motor 110 is rotated, and the upper plate 10 on which the driven motor 120 is mounted is rotated to upper. The sheet mounted on the plate 10 is rotated.

During rotation, the upper plate 10 and the guide plate 50 are rotated together, and the circular inclined portion of the lower plate 20 between the upper plate 10 and the circular inclined portions 11 and 51 of the guide plate 50. 21 is positioned, and the rolling members 30 and 31 are provided between the circular inclined portions 11, 21, and 51 to smoothly rotate the upper plate 10 with respect to the lower plate 20. .

At this time, the upper hooks 41 and 131 of the release preventing hook 40 and the second hook 130 and the lower hooks 42 and 132 and the damper 60 of the release preventing hook 40 are all viewed from the top of the swivel device S. Since the center axis and the center position are formed in an arc shape forming a part of the same concentric circle, the interference between the upper plates 10 is not prevented because the interference does not occur with each other.

If a collision and a collision accident occur while driving a vehicle, the seat is leaned forward or leaned backward by the inertial force acting on the seat. Accordingly, the upper plate 10 is pulled upward and pressed downward according to its position. This will work.

At this time, the upper hook 41 and the lower hook 42 of the separation preventing hook 40 are caught with each other against the upward pulling force, thereby preventing upward deformation of the upper plate 10. Therefore, by holding the seat securely, the support strength of the seat belt installed in the seat is improved, and the occupant can be more safely restrained on the seat.

According to the present invention, since the separation preventing hook 40 is installed at a portion adjacent to the bolt 15 connecting the upper plate 10 and the cushion frame 140 to suppress the upward force acting on the upper plate 10 to the maximum. It is possible to prevent the upward deformation of the upper plate 10 more effectively. Therefore, the seating state of the seat is firm, thereby improving the occupant support strength of the seat belt installed in the seat.

The upward deformation preventing action of the upper plate 10 is reinforced by the second hook 130 to more reliably prevent the upward deformation of the upper plate 10, thereby improving the seat belt's seating force. The effect of improving occupant support strength is further doubled.

On the other hand, when the upward force is applied to one side of the upper plate 10 as described above, the opposite force is applied to the upper plate 10 is pressed toward the seat rail 150, the damper 60 at this time By supporting the lower end of the upper hook 41 of the separation prevention hook 40, it is possible to prevent the downward deformation of the upper plate (10). Since the damper 60 is installed at the seat rail 150 connection portion of the lower plate 20, the vertical load transmitted to the damper 60 is immediately transferred to the floor through the seat rail 150 to facilitate load distribution. This helps to prevent the downward deformation (sag) of the upper plate 10.

By preventing the upward and downward deformation of the upper plate 10 as described above, the dimensional relationship between all parts between the upper plate 10 and the lower plate 20 is normally maintained according to the design specification, thereby rotating the swivel device S. This is done smoothly without interference. In other words, failure due to deformation does not occur.

Figure 6 shows a state of testing the support strength of the seat belt in the BIS type sheet to which the present invention is applied. All fixing points of the seat belt 160 are installed on the seat itself. The upper body support member 170 that replaces the upper body of the occupant is installed on the upper body support portion of the seat belt 160, and the pelvic support member 180 that replaces the pelvic portion of the occupant is installed on the pelvis support portion. These upper body corresponding members 170 and pelvic part corresponding members 180 are connected by wires to a device capable of applying a load.

Under the above conditions, instantaneous pulling force was applied to the upper body corresponding member 170 and the pelvic part corresponding member 180 to reproduce the collision condition, and the load acting on the seat belt 160 anchor was measured. If the upper plate 10 of the swivel device is deformed in a collision condition, the seat is not fixed properly, and thus, when the load is applied to the seat belt 160, the seat behaves in the same direction, thereby reducing the magnitude of the load acting on the seat belt anchor. When the upper plate 10 is prevented from being deformed and the seat is firmly fixed, the size of the load acting on the seat belt anchor is increased because the seat does not behave when the load is applied to the seat belt 160.

As a result of the test, when the present invention is applied, it is confirmed that the fixed state of the seat is firmly maintained and the load acting on the seat belt anchor is increased by about 140%, thereby improving the support strength of the seat belt 160.

As described above, the present invention has been described with reference to the embodiments illustrated in the drawings, but this is merely exemplary, and various modifications and equivalent embodiments of the present invention may be obtained by those skilled in the art. I understand that it is possible. Therefore, the true technical protection scope of the present invention will be defined by the claims below.

10: upper plate 11: circular inclined portion
15: Bolt 20: Lower Plate
21: circular slope 25: bolt hole
30: upper cloud member 31: lower cloud member
40: separation prevention hook 41: upper hook
42: lower hook 50: guide plate
51: circular slope 60: damper
70: upper reinforcement plate 80: lower reinforcement plate
71,81: Hole 90: Motor mounting bracket
100: motor 110: drive gear
120: driven gear 130: second hook
131: upper hook 132: lower hook
140: cushion frame 150: seat rail
160: seat belt 170: upper body corresponding member
180: pelvic corresponding member

Claims (7)

The upper plate connected to the cushion frame side of the seat,
Lower plate connected to the seat rail side of the floor,
A rolling member installed between the upper plate and the lower plate to enable rotation of the upper plate with respect to the lower plate,
The upper plate is formed in a size corresponding to the size of the cushion frame is mounted in direct contact with the cushion frame without using an intermediate connecting member,
The lower plate is formed in a size corresponding to the interval between the seat rails on both sides of the seat swivel device of the vehicle, characterized in that mounted on the seat rail in direct contact without using an intermediate connecting member. The method according to claim 1,
A separation prevention hook is installed between the upper plate and the lower plate, and the separation prevention hook is composed of an upper hook mounted on the upper plate and a lower hook mounted on the lower plate, and the upper hook and the lower hook are each J-shaped. Seat swivel device of the vehicle, characterized in that the engaging portions of each other in the up and down direction. The method according to claim 2,
A seat swivel device for a vehicle, characterized in that a damper for supporting the lower end of the upper hook is provided. The method according to claim 2,
The upper plate and the lower plate are formed in a square shape, the upper plate and the lower plate are each four corners are mounted to the cushion frame and the seat rail via a bolt, the separation prevention hook is a cushion frame of the upper plate and the lower plate And a seat rail mounting point adjacent to the seat rail mounting point. The method according to claim 2,
An upper reinforcing plate is provided on the lower surface side of the upper plate to form a two-ply structure spaced apart from the upper plate by a predetermined interval, and a lower reinforcing plate is formed on the upper surface side of the lower plate to form a two-ply structure spaced apart from the lower plate. The seat swivel device of the car, characterized in that. The method according to claim 2,
A second hook is installed between the upper plate and the lower plate, and the second hook has a structure in which the upper hook mounted on the upper plate and the lower hook mounted on the lower plate are hung with each other in the vertical direction, and the second hook The seat swivel device of the vehicle, characterized in that installed closer to the rotation center of the swivel device than the separation prevention hook. The method according to claim 6,
The upper hook and the lower hook of the separation preventing hook and the upper hook and the lower hook of the second hook have an arc-shaped planar shape which forms a part of concentric circles about the central axis of rotation of the swivel device. Swivel device.

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