JP2001130293A - Rotary seat for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase the movement of a seat between the inside and the outside of a cabin without increasing the size of a moving mechanism in a rotary seat for vehicle which is rotatable between the seating position facing forward and the transverse position facing sidewise, and movable between the inside and the outside of the cabin through a door opening part. SOLUTION: A widthwise supporting base 3 to movably support a seat body in the vehicle width direction is formed of a two-stage straight slide mechanism 11. The two-stage straight slide mechanism 11 comprises a pair of right and left outer rails 12 as fixed rails, a middle rail 13 and an inner rail 14 as movable rails, and a large number of steel balls arranged between grooves facing each other of each rail. The middle rail 13 and the inner rail 14 are respectively moved by a transmission mechanism comprising ball screws 22 and 32 and ball nuts 28 and 38 with electric motors 20 and 30 as drive sources, and the seat body mounted on the inner rail 14 is moved in two stages.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotating seat for a vehicle, which is mounted on an automobile and is suitable for occupants of, for example, the elderly and the disabled.

[0002]

2. Description of the Related Art This type of rotating seat is configured to rotate an occupant toward a door opening in a sitting posture so that the occupant can easily get on and off the vehicle.
After rotating to the sideways position facing the door opening, it is configured to be moved out of the room through the door opening. As one of means for moving the seat to the outside of the room, a pair of fixed rails is provided on the vehicle floor side and inclined downward toward the outside of the vehicle, and a pair of movable rails are provided on the seat side along the fixed rail. There is known a slide mechanism configured to move the seat by sliding the seat down while moving the seat down.

[0003]

The above-mentioned conventional seat slide mechanism has a structure in which a large number of steel balls held by a cage move between grooves between a fixed rail and a movable rail which are arranged opposite to each other. Therefore, the movement amount is determined by the rail length. When a rotating seat is mounted on a passenger car type vehicle, for example, the rail length is at most about the width of the seat even if it is set to the maximum. Accordingly, there is a limit to the amount of movement that can be taken naturally due to the restriction that the slide mechanism must be set in a limited space under the seat, and it has been difficult to secure a sufficient amount of movement.

The present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to make it possible to rotate between a seating position facing the front of the vehicle and a lateral position facing the vehicle side. In addition, after rotating to the horizontal position, in a rotating seat for a vehicle that can be moved between the inside and the outside through the door opening, without increasing the size of the moving mechanism,
An object of the present invention is to increase the amount of movement of a seat between indoors and outdoors.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, a vehicular rotary seat according to the present invention has a configuration as described in each of the claims. Therefore, according to the first and second aspects of the present invention, when the seat body is rotated from the seating position facing the front of the vehicle to the lateral position facing the vehicle, the seat body moves from the indoor to the outdoor or from the outdoor to the indoor. However, in this case, since the movement of the seat body between the inside and outside of the room is performed in a two-stage slide system, the movement amount of the seat body can be increased as compared with the related art. Therefore, the occupant's getting on and off the seat body outside the room can be improved.

[0008] According to the third aspect of the present invention, the height of the seat body moved out of the room can be reduced with an increase in the amount of movement, so that the occupant's getting on and off can be further improved. In addition, since the amount of elevating (elevation difference between indoor and outdoor) is increased as compared with the related art, the responsiveness to the height of the vehicle floor is increased, and the types of vehicles that can be mounted are increased.

According to the inventions of claims 4 to 6, since the movement of the seat body between the indoor and the outdoor can be performed by electric power, the operability is improved, and the ball screw and the ball nut are used as means for transmitting the power of the electric motor. Because of the use of, it can be arranged compactly in a narrow space.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show a state in which a rotating seat disposed in a vehicle interior is viewed from the rear. As shown, the rotating seat 1 is arranged near the door opening D. In the following description, a position in which the seat body 2 faces the front of the vehicle is referred to as a seating position, a position in which the vehicle faces the side of the vehicle facing the door opening for getting on and off is referred to as a lateral position, and further moves out of the vehicle. The moved position is called the getting on / off position.

The rotating seat 1 for a vehicle according to the present embodiment has a widthwise support base 3 for slidingly supporting a seat body 2 in a vehicle width direction.
A rotation support table 4 that rotatably supports the width direction support table 3; and a front-rear direction support table 5 that slides and supports the rotation support table 4 in the vehicle front-rear direction. And, on the vehicle floor F, they are mounted in a stacked manner in the order of the front and rear direction support base 5, the rotary support base 4, the width direction support base 3, and the seat body 2 from below. As shown in FIG. 3, the seat body 2 has a seat cushion 2a and a seat back 2b, and a seat holder 7 having a footrest 6 is attached to a lower surface of the seat cushion 2a as shown in FIG. ing. The seat body 2 is moved to the width direction support base 3 via the seat holder 7.
Attached to.

Next, the widthwise support 3 will be described with reference to FIGS. The width direction support base 3 includes a two-stage linear slide mechanism 11. Two-stage linear slide mechanism 11
Is a pair of left and right outer rails 12 as fixed rails.
And a pair of left and right middle rails 1 as first movable rails
3 and a pair of left and right inner rails 14 as second movable rails. And the outer rail 12
A plurality of V-grooves are formed between the opposed rails and the middle rail 13 and between the middle rail 13 and the inner rail 14, and a number of steel balls 15 held by a cage are interposed between the middle rail 13 and the inner rail 14. The inner rail 14 is moved linearly.

The outer surfaces of the left and right outer rails 12 are
The side plates 16 are fixed to each other, and the rear ends of the left and right side plates 16 are connected to each other by a vertical connecting plate 17. The front ends of the outer rails 12 are connected to each other by a flat connecting plate 18. In this way, the outer rails 12 are integrated by the side plate 16 and the front and rear connecting plates 17 and 18 to form a grid-shaped fixed frame 19 that is long in the moving direction. A first electric motor 20 as a drive source of the width direction support base 3 is attached to the rear connecting plate 17, and a first ball screw 22 is rotationally driven from the first electric motor 20 via a speed reducer 21. It is supposed to be. First
The ball screw 22 is disposed between the outer rails 12 in parallel, and its tip is rotatably supported by a bracket 23 attached to the front connection plate 18.

The left and right middle rails 13 are connected to each other by front and rear connecting plates 26 at the front end and the rear end, respectively, thereby forming a grid-like intermediate slide frame 27 long in the moving direction. I have. A first ball nut 28 that meshes with the first ball screw 22 is attached to a rear connection plate 26 of the intermediate slide frame 27 via a bracket 29. Therefore, when the first electric motor 20 is started, the first ball screw 22
Rotates, the first ball nut 28 moves, and the intermediate slide frame 27 moves in the vehicle width direction. A second electric motor 30 as a drive source of the widthwise support base 3 is attached to the rear connecting plate 26 of the intermediate slide frame 27,
From the second electric motor 30 via the speed reducer 31, the second
Is driven to rotate.
The second ball screw 32 is disposed in parallel between the middle rails 13, and has a tip rotatably supported by a bracket 33 attached to the front connection plate 26.

The left and right inner rails 14 are connected to each other by front and rear connecting plates 36 at the front end and the rear end, respectively, whereby a grid-like top slide frame 37 long in the moving direction is formed. I have. The second slide plate 36 on the rear side of the top slide frame 37
A second ball nut 38 that meshes with the ball screw 32 is mounted via a bracket 39. For this reason, when the second electric motor 30 is started, the second ball screw 32 rotates, the second ball nut 38 moves, and the top slide frame 37 moves in the vehicle width direction.
A pair of front and rear seat brackets (seat legs) 40 are mounted on the top slide frame 37, and the front and rear seat brackets 40 are attached to the seat body 2.
Are attached via a sheet holder 7.

As described above, the widthwise support 3 moves the intermediate slide frame 27 with respect to the fixed frame 19 and the top slide frame 37 with respect to the intermediate slide frame 27, that is, expands and contracts. Thus, the seat body 2 is moved in two stages. Then, the width direction support base 3 is disposed on the rotary support base 4 so as to be inclined downward in the extension direction, that is, at the sitting position, to be inclined forward. As shown in FIG.
1 and right and left mounting brackets 42 fixed on the rotary base 41, and the left and right mounting brackets 42 are fixed to the left and right side surfaces of the fixed frame 19 in the width direction support 3. In this case, the height of the front and rear seat brackets 40 is adjusted so that the seat body 2 becomes horizontal in accordance with the inclination (the front side of the seat bracket 40 is mounted) in such a manner that the width direction support base 3 is attached in a downwardly inclined manner. The foot length is set long).

The rotary support 4 is for rotating the seat body 2 by about 90 degrees between the seating position and the lateral position, and is supported by the rotary support 43 via the rotary ring 43.
It is rotatably supported above. As shown in FIG. 13, the rotating ring 43 has an inner ring 43a and an outer ring 43b, and although not shown, V-grooves are formed between opposing peripheral surfaces of the two rings 43a and 43b, and a large number of steel balls are formed. It is interposed. The inner ring 43a is fixed to the lower surface of the rotating base 41, and the outer ring 43b is fixed to the upper surface of the front-rear moving table 5. According to the rotating ring 43, the inner ring 43 a rotates with respect to the outer ring 43 b while receiving the weight of the occupant, the width direction support 3, the seat body 2, and the like, so that the width direction support 3
At the same time, the seat body 2 rotates with respect to the front-back support 5. Then, the rotating base 41 supported as described above
Although not shown, is configured to be rotated by a rotary drive device (belt type, chain type, gear type, etc.) using an electric motor as a drive source.

The rotary support 4 is supported by a longitudinal support 5 so as to be linearly movable in the longitudinal direction of the vehicle.
That is, the front-rear support 5 is the outer race 43 b of the rotary support 4.
The main base 51 is fixed to the vehicle floor F via a linear slide mechanism 52 so as to be slidable in the front-rear direction. The linear slide mechanism 52 has the same configuration as the linear slide mechanism 11 of the width direction support 3 described above. That is, the linear slide mechanism 52 includes a pair of left and right fixed rails 53 fixed on the vehicle floor F, a pair of left and right movable rails 54 arranged inside the fixed rail 53, and a pair of opposed rails 53, 54. And a plurality of steel balls (not shown) held by a cage interposed between the V-grooves 55.

The above-mentioned sliding operation is interlocked with the above-mentioned rotating operation via an interlocking mechanism 60. The interlocking mechanism 60 includes an arcuate pinion gear 61 mounted on the lower surface of the rotary base 41, an intermediate gear 62 rotatably mounted on the upper surface of the main base 51, and a vehicle front-rear direction fixed on the vehicle floor F. And a rack 63 extending to the end. The pinion gear 61 meshes with the intermediate gear 62, and the intermediate gear 62 meshes with the rack 63. However, as shown in FIG. 14, no meshing teeth are formed in the range of the fixed angle α on the near side of the pinion gear 61 in the drawing. Therefore, within this range of the angle α, the pinion gear 61 does not mesh with the intermediate gear 62, so that the rotation operation of the seat body 2 and the sliding operation are not interlocked (non-interlocking range). When the seat body 2 is rotated from the seated position toward the door opening D by an angle α, the pinion gear 61 meshes with the intermediate gear 62, and thereafter the meshing of the pinion gear 61 with the intermediate gear 62 and the meshing of the intermediate gear 62 with the rack 63. Through the door opening D of the seat body 2
The rotation operation to the side and the slide operation are linked.

Conversely, when the seat body 2 is rotated from the lateral position facing the door opening D to the sitting position, the seat body 2 is rotated.
Moves in the rear of the vehicle in conjunction with this rotation operation, whereby the foot of the occupant can be secured widely. According to the interlocking mechanism 60 configured as described above, when the seat body 2 is moved between the sitting position and the sideways position, the rotation operation and the sliding operation of the seat body 2 can be performed by one operation. Thus, the usability of the rotating seat 1 is improved.

According to the rotating seat 1 for a vehicle according to the present embodiment configured as described above, the state shown in FIG. 1 is obtained when the vehicle is running. In this state, the seat body 2 is in the seating position facing the front of the vehicle, and is located at the rear end of the slide. Further, the width direction support base 3 is in a state where the moving direction is parallel to the vehicle front-rear direction, and the middle rail 13 and the inner rail 14 are both located at the rear ends in the moving direction and are in a contracted state. When getting on and off the rotating seat 1 in such a state, when the electric motor for rotational driving is driven to rotate the seat body 2 to the door opening D side, as described above, the seat body 2
Is rotated by the angle α, a sliding operation in front of the vehicle is performed in conjunction with the rotation operation. Then, the electric motor is stopped at the time when the motor is rotated by approximately 90 degrees. This state is shown in FIG.
Is indicated by a solid line.

In the state shown by the solid line in FIG. 2, the seat body 2 faces the door opening D, and the moving direction of the width direction support 3 is parallel to the vehicle width direction. Therefore, in this state, the first and second electric motors 20 and
When each 30 is driven, the first and second ball screws 22 and 32 rotate to move the intermediate slide frame 27 and the top slide frame 37 via the first and second ball nuts 28 and 38, respectively. I do. For this reason, as shown by a virtual line in FIG. 2, the seat body 2 on the top slide frame 37 is moved from the door opening D to the outdoor getting on / off position. In this case, the first and second electric motors 2
0 and 30 may be either simultaneous drive or sequential drive. At this time, since the width direction support base 3 is inclined downward toward the outdoor side, the seat body 2 sequentially descends as it is moved out of the room. Therefore, it is possible to get on and off the seat body 2 easily. To return the seat body 2 from the getting on / off position to the room, first and second
By rotating the electric motors 20 and 30 in reverse, the electric motors 20 and 30 can be returned to the horizontal position in the room. Then, after the seat body 2 is returned to the room, when the electric motor for rotational driving is driven in reverse, the seat body 2 is rotated so as to face the front of the vehicle, and slides rearward in conjunction with the rotation. . Thus,
The widthwise support 3 and the seat body 2 are returned to the seating position.

As described above, according to the rotating seat 1 according to the present embodiment, the widthwise support 3 is integrated with the seat body 2 and is rotated between the seating position and the sideways position by the rotary support 4. In the seating position, the longitudinal direction, which is the moving direction, is oriented along the vehicle front-rear direction. For this reason, when the vehicle is running, the widthwise support 3 does not protrude in the lateral direction, and it is possible to secure a space between adjacent seats.

Further, in the present embodiment, the widthwise support base 3 is of a two-stage slide system using the outer rail 12, the middle rail 13, and the inner rail 14, so that the widthwise support base 3 is wider than the conventional one-stage slide system. With the length of the support base 3 in the longitudinal direction being fixed, the amount of movement and the amount of elevation between the lateral position of the seat body 2 and the getting on / off position can be increased. Therefore, when the seat body 2 is moved out of the room, the seat body 2 can be largely separated from the door opening D, and can be brought close to the ground, so that getting on and off the seat body 2 can be improved. When the moving amount and the elevating amount are set to be equal to those of the one-stage slide type, it is possible to reduce the length of the width direction support base 3 in the moving direction, thereby achieving compactness.

Further, the movement amount and the elevating amount of the seat body 2 between the lateral position and the getting on / off position are increased,
The present invention can be applied to a vehicle type having a higher vehicle height (vehicle floor) than a passenger vehicle, and the range of applicable vehicle types can be expanded. Further, electric motors 20 and 30 are used as slide driving sources of the width direction support base 3, and ball screws 22 and 32 and ball nuts 28 and 38 are used as power transmission means.
By adopting, it can be arranged compactly in a narrow space.

It should be noted that the present invention is not limited to the illustrated embodiment, but can be appropriately changed without departing from the gist of the present invention. For example, in the present embodiment, a case has been described in which the rotating seat 1 is applied to a type in which the rotating operation and the sliding operation are linked, but a rotating seat or a sliding type in which the rotating operation and the sliding operation are performed independently. The present invention may be applied to a rotating seat having no operation.

Further, the steel ball 15 supported by the cage moves between the opposed grooves of the rails 12, 13, and 14 constituting the two-stage linear slide mechanism 11 of the widthwise support base 3. Alternatively, the configuration may be changed to a configuration in which a short cylinder is fitted on a cylindrical or cylindrical guide rail and slides. Further, the driving device of the width direction support base 3 is not limited to the ball screw type, but may be changed to another type such as a chain type or a gear type.
In addition, the intermediate slide frame 27 and the top slide frame 3
7 are individually driven, but it is also possible to change to a configuration in which both slide frames 27 and 37 move in conjunction with one electric motor.

In this embodiment, the widthwise support 3
Is inclined forward and downward toward the outside of the room,
It has the advantage that the seat body 2 can perform the elevating operation at the same time as the sliding operation between the indoor and the outdoor. However, while the sliding operation is performed horizontally, the configuration is changed to perform the elevating operation separately from the sliding operation. It is also possible. Further, in the present embodiment, when the width direction support 3 is provided, the width direction support 3 is provided between the rotation support 4 and the seat body 2 and rotates together with the seat body 2.
In the case of a configuration in which the front-rear support 5 is omitted or between the vehicle floor F and the rotary support 4, the support can be provided. However, in that case,
It goes without saying that the sliding direction of the width direction support base 3 is always set to the vehicle width direction.

[0027]

As described in detail above, according to the present invention,
It is rotatable between a seating position facing the front of the vehicle and a lateral position facing the vehicle, and after moving to the lateral position,
In a vehicular rotary seat that can be moved between a room and the outside through a door opening, the amount of movement of the seat between the room and the outside can be increased without increasing the size of the moving mechanism. For this reason, the occupant getting on and off the seat body is improved.

[Brief description of the drawings]

FIG. 1 is a view of a rotating seat when a seat body is in a seating position as viewed from the rear of the vehicle.

FIG. 2 is a view of a rotating seat in which a seat body is rotated to a lateral position as viewed from the rear of the vehicle.

FIG. 3 is a perspective view of a seat body.

FIG. 4 is a perspective view of a sheet holder.

FIG. 5 is a plan view of the width direction support base, showing a state before movement (at the time of reduction).

FIG. 6 is a plan view of the width direction support base, showing a state after movement (at the time of extension).

FIG. 7 is a sectional view taken along line AA of FIG. 6;

FIG. 8 is a sectional view taken along line BB of FIG. 6;

FIG. 9 is a sectional view taken along line CC of FIG. 6;

FIG. 10 is a sectional view taken along line DD of FIG. 6;

FIG. 11 is a sectional view taken along line EE of FIG. 6;

FIG. 12 is a sectional view taken along line FF of FIG. 6;

FIG. 13 is a perspective view of a rotary support table and a front-back direction support table.

FIG. 14 is a plan view showing an interlocking mechanism of a rotating operation and a sliding operation in the front-rear direction.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Rotating seat 2 ... Seat main body 3 ... Width direction support stand 4 ... Rotation support stand 5 ... Front-back direction support stand 11 ... Two-stage linear slide mechanism 12 ... Outer rail as a fixed rail 13 ... Middle rail as a 1st movable rail 14 inner rail as second movable rail 20 first electric motor 22 first ball screw 28 first ball nut 30 second electric motor 32 second ball screw 38 second ball nut

Claims (6)

[Claims] A rotating seat for a vehicle rotatable between a seating position facing the front of the vehicle and a lateral position for getting on and off facing the vehicle, for supporting the seat body in a horizontally rotatable manner. And a width direction support interposed between the vehicle floor and the rotation support or between the rotation support and the seat body to support the seat body movably in the vehicle width direction. The width direction support base includes a fixed rail, a first movable rail movably supported along the fixed rail, and a second movable rail movably supported along the first movable rail. A rotating seat for a vehicle comprising: 2. A rotating seat for a vehicle, which is rotatable between a seating position facing forward of a vehicle and a lateral position for getting on and off facing laterally of the vehicle, for supporting a seat body in a horizontally rotatable manner. A rotation support table, a front-rear direction support table that supports the rotation support table so as to be movable in the vehicle front-rear direction, between an intermediate position in which the seat body rotates a predetermined angle from a seating position to a horizontal position and the horizontal position. Sometimes,
Interlocking means for moving the rotary support in the front-rear direction of the vehicle in conjunction with the rotation of the seat body; interposed between the vehicle floor and the front-back support or between the rotary support and the seat body A width support for movably supporting the seat body in the vehicle width direction, and the width support is supported movably in the vehicle width direction along the fixed rail. A rotating seat for a vehicle, comprising: a first movable rail; and a second movable rail movably supported along the first movable rail. 3. The rotating seat for a vehicle according to claim 1, wherein the width direction support base is inclined downhill toward the outdoor side in a state where the seat body is rotated to a lateral position. Rotating seat for vehicles. 4. The rotating seat for a vehicle according to claim 1, wherein the width direction support base is provided on an electric motor fixed to one of a fixed rail and a first movable rail, and provided on the other. A rotating seat for a vehicle, comprising a ball nut provided and a ball screw screwed to the ball nut and rotated by the electric motor. 5. The rotating seat for a vehicle according to claim 1, wherein the width direction support base is an electric motor fixed to one of a first movable rail and a second movable rail, and the other is an electric motor fixed to one of the first movable rail and the second movable rail. And a ball screw screwed into the ball nut and rotated by the electric motor. 6. The rotating seat for a vehicle according to claim 1, wherein the width-direction support base includes a first electric motor fixed to one of a fixed rail and a first movable rail, A first ball nut provided on the other side;
A first ball screw screwed into the ball nut and rotated by the first electric motor;
A second electric motor fixed to one of the movable rail and the second movable rail, a second ball nut provided on the other, a second ball nut screwed into the second ball nut, and the second A rotating seat for a vehicle, comprising: a second ball screw rotated by an electric motor.