JP2003054292A - Seat moving device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seat moving device which is capable of front, rear, right and left movement operation and rotation operation of a seat with one operation, easy elevation even in a vehicle with a small space and easy response to change in car model or request. SOLUTION: A rotation disk 5 rotating within a plane in parallel with a face of a bottom plate 4 is placed on the upper face of the bottom face 4, a supporting frame 2 supporting the seat 1 is supported by the rotation disk 5 in capable of linear movement, a guide member 7 is provided at the supporting frame 2, and a guide groove 17 is formed on the bottom plate 4 for guiding the guide member 7 in the direction of rotation and the direction of linear movement of the seat 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seat moving device that can be used, for example, to assist a physically handicapped person or an elderly person in getting up and down in a vehicle.

[0002]

2. Description of the Related Art Conventionally, a turntable for rotatably supporting a seat body, a front-rear direction support base for slidably supporting the turntable in the vehicle front-rear direction, and an interlocking operation for interlocking a rotational movement of the seat body with a front-rear slide operation Japanese Patent Application Laid-Open No. 2000-16129 discloses a rotary seat for a vehicle, which includes a mechanism, and the interlocking mechanism includes a guide arm attached to a lower surface of a seat body side and a guide groove provided on the vehicle floor side and engaged with the guide arm. It is disclosed in the official gazette.

According to this, the seat is slid in the vehicle front-rear direction so as to be aligned with the door opening, and is rotated 90 degrees to direct the seat to the door opening, so that the seated person can easily transfer to and from the wheelchair. In addition, the slide operation and the rotation operation can be performed by one operation, which is convenient. However, since the sliding direction of the seat is fixed in the vehicle front-rear direction in this type, even if the seat is slid and rotated by the interlocking mechanism, the position of the seat remains behind the opening, and therefore the seat moves up and down. Hard to do,
If the space is small like in a small car, the caregiver and the seated person cannot move freely, and if the seat body is to be swung out of the room using the lifting link mechanism, the stroke of the link must be lengthened. However, there is a drawback that the device becomes large.

[0004]

SUMMARY OF THE INVENTION According to the present invention, it is possible to perform a sliding operation and a rotating operation in the front, rear, left and right directions of a vehicle with one operation, and it is possible to easily move up and down even in a vehicle having a small space. An object of the present invention is to provide a seat moving device that can easily respond to changes in vehicle types and demands.

[0005]

In the seat moving apparatus of the present invention, a turntable that rotates in a plane parallel to the bottom plate surface is installed on the upper surface of the bottom plate, and a support frame that supports the seat is linearly moved by the turntable. A guide member is movably supported, a guide member is provided on the support frame, and a guide groove for guiding the guide member in the direction in which the seat rotates and the direction in which the seat linearly moves is formed in the bottom plate.

Since the support frame for supporting the seat is rotated by the rotation of the turntable and can be slid in any direction in the plane parallel to the bottom plate, when the guide member moves along the guide groove, the support frame is moved. Always moves linearly and rotates following this, and the seat moves to a position close to the opening and rotates so as to face the opening so that the seated person can easily move up and down to the vehicle. Return to position. By simply changing the shape of the guide groove, the movement pattern of the seat can be easily changed according to the vehicle type.

The guide groove can also guide the guide member so that the seat moves in the vehicle width direction. As a result, the seat can be moved also in the vehicle width direction by one operation and can be projected from the opening. A motor for rotating the guide member may be provided on the support frame, and an engagement means for moving the guide member along the guide groove with the rotation may be installed on the bottom plate. With this structure, the seat can be automatically moved by operating the motor without manually moving the seat.

[0008]

1 to 6 show a first embodiment of the present invention. This seat moving device is applied to a passenger seat or a left and right rear seat 1 of a vehicle, and as shown in FIGS. 1 to 3, a support frame 2 for supporting the seat 1 and a bottom plate 4 fixed to a vehicle floor 3. A rotary plate 5 installed on the upper surface of the bottom plate 4, a slide arm 6 fixed to the support frame 2 and slidably supported by the rotary plate 5, and rotatably mounted on the lower surface of the support frame 2. The guide member includes the pinion gear 7 and the lifting link mechanism 8 that lifts and lowers the seat 1. Further, an opening 9 of the vehicle is formed on the left side of the seat 1. In FIG. 3, reference numeral 25 denotes a vehicle ceiling and 26 denotes a door.

A seat frame 11 is fixed to both side surfaces of the seat 1, and the seat frame 11 is arranged above the support frame 2 via an elevating link mechanism 8. The support frame 2 is arranged above the bottom plate 4, and a slide arm 6 parallel to the vehicle floor 3 is fixed to the lower surface of the outdoor side (left side) of the support frame 4 in the front-rear direction. The slide arm 6 is slidably engaged with an engagement groove 12 formed on the upper surface of the rotary disc 5, and the support frame 2 is supported by the rotary disc 5 so as to be linearly movable. The turntable 5 is installed so as to be rotatable in parallel to the plate surfaces of the vehicle floor 3 and the bottom plate 4, and as a result, the slide arm 6 is placed in any direction in a plane parallel to the vehicle floor 3 and the bottom plate 4. Can also slide.

A pinion gear 7 is rotatably attached to the front center of the lower surface of the support frame 2. Pinion gear 7
As shown in FIG. 4, the first pulley 13 is fixed to the upper end of the central axis. A second pulley 14 is provided behind the first pulley 13, and the first pulley 13 and the second pulley 14 are connected by a belt 15. Further, the second pulley 14 is connected to the rotation shaft of the motor 16 attached to the support frame 2. Therefore, when the motor 16 is driven, its rotational force is transmitted to the pinion gear 7 via the second pulley 14, the belt 15 and the first pulley 13, and the pinion gear 7 rotates.

As shown in FIGS. 1 and 5, the bottom plate 4 includes:
A guide groove 17 that engages with and guides the pinion gear 7.
Is formed. The left half of the guide groove 17 extends toward the opening 9 along the vehicle width direction, and the right half has a common center with the turntable 5 and is convexly curved forward 1/4 to the right.
It is formed in the shape of a circular arc. The right end of the guide groove 17 is located to the right of the center O of the rotary disk 5, and the left end of the arc-shaped portion is located in front of the center O of the rotary disk 5. When the seat 1 is in the normal state (when facing the front of the vehicle), the pinion gear 7 engages with the right rear end of the guide groove 17. Further, on one edge of the inner circumference of the guide groove 17, an engagement means composed of a large number of teeth that engage with the outer circumference of the pinion gear 7 is formed. Therefore, when the motor 16 operates and the pinion gear 7 rotates, the pinion gear 7 is sent to the teeth of the guide groove 17, and the pinion gear 7 moves along the guide groove 17.

As shown in FIGS. 2 and 6, the lifting link mechanism 8 has a front side arm 18 and a rear side arm 19 which are arranged on both sides of the seat 1, respectively. The front side arm 18 and the rear side arm 19 are parallel to each other to form a four-bar parallel link mechanism, one end of which is axially attached to the upper end of the seat frame 11 and the other end of which is the support frame 11 respectively.
It is pivotally attached to the rear part. Further, a connecting rod 21 is installed between the other ends of the rear side arms 19, and a swing arm 20 projects from the connecting rod 21.

The tip of a piston rod 24 extending from a hydraulic cylinder 22 swingably attached to the support frame 11 is pivotally attached to the swing arm 20, and the piston rod 24 is expanded and contracted to swing the swing arm 20. When the seat 1 is moved, the front side arm 18 and the rear side arm 19 are raised and lowered, and the seat 1 is moved up and down. In addition to the hydraulic cylinder 22, the rocking arm 22 can be rocked by
Other actuators such as electric actuators can also be used.

The pinion gear 7 is located at the rear end of the guide groove 17 while the vehicle is traveling, and the seat 1 is installed toward the front toward the rear of the vehicle as shown in FIG. 5a. When the motor 16 is operated in this state, the pinion gear 7 rotates and is sent to the teeth of the guide groove 17 to start moving. While the pinion gear 7 is moving along the right half portion (arc-shaped portion) of the guide groove 17, the turntable 5 and the slide arm 6 supported by the turntable 5 rotate counterclockwise, and the seat 1 also turns. It rotates counterclockwise with the center O of 5 as the center of rotation. Then, as shown in 1b of FIG. 5, when the pinion gear 7 reaches the end of the arcuate portion, the seat 1 is rotated 90 degrees so as to face the opening 9.

Further, when the pinion gear 7 moves along the left half of the guide groove 17, the slide arm 6 slides to the outside of the room, and the seat 1 approaches the opening 9 as shown in 1c of FIG. The front end thereof projects from the opening 9 to the outside of the vehicle. Next, as shown in FIG. 6, the piston rod 24 of the hydraulic cylinder 22 is extended to tilt the front side arm 18 and the rear side arm 19 forward. Then, even if the front side arm 18 and the rear side arm 19 are short, the seat 1
Is swung downwards outside the vehicle without hitting the vehicle floor 3.

After the user has been lifted and lowered, the piston rod 24 is retracted to raise the front side arm 18 and the rear side arm 19, and the seat 1 is raised. Next, the motor 16 is rotated in the reverse direction to move the pinion gear 7 in the opposite direction along the guide groove 17. Then, the seat 1 moves in the vehicle width direction and moves away from the opening 9, and further rotates 90 degrees in the reverse direction to face the front of the vehicle. In the first embodiment, the seat 1 facing the front of the vehicle rotates toward the opening 9 and then slides in the vehicle width direction so as to approach the opening 9. Therefore, a space is provided in front of the seat 1. The user can easily get in and out of the vehicle even in a light vehicle or the like, and the stroke of the lifting / lowering lift mechanism 8 can be reduced to make the apparatus compact.

FIG. 7 shows a second embodiment. The guide groove 17 formed in the bottom plate 4 is a linear groove whose outer side (left side) portion extends along the vehicle width direction, and has a common center with the turntable 5 at the indoor side end (right end). Have
The arc-shaped groove of 1/4 circle that curves convexly to the front right is continuous,
Further, a straight groove extending in the vehicle front-rear direction is connected to the rear end of the vehicle. Further, the right end of the arc-shaped portion of the guide groove 17 is
It is located to the right of the center O of the rotary disk 5, and the left end of the arc-shaped portion of the guide groove 17 is located in front of the center O of the rotary disk 5. When the seat 1 faces the front of the vehicle, the pinion gear 7 is engaged with the rear end of the guide groove 17 as shown in 1a of FIG.

When the motor 16 is operated in this state, first, the pinion gear 7 moves to the front of the vehicle along the guide groove 17, and the slide arm 6 and the seat 1 slide to the front of the vehicle as shown in 1b of FIG. To do. Further, when the guide rail 7 moves in the arcuate portion of the guide groove 17, the rotary disc 5 and the slide arm 6 supported by this rotate 90 degrees counterclockwise, and the seat 1 also rotates about the center O of the rotary disc 5 as a rotation center. As a result, the seat 1 faces the opening 9 as shown by 1c in FIG.

Then, when the pinion gear 7 moves along the left straight portion of the guide groove 17, the slide arm 6 slides to the outside of the seat, and as shown in 1d of FIG.
Approaches the opening 9 and its front end projects from the opening 9 to the outside of the vehicle. After that, the seat 1 is swung downward to the outside of the vehicle as in the first embodiment. This seat moving device is used for seat 1
It is suitable for vehicles larger than ordinary cars with a space in front of. Since the other configurations are almost the same as those of the first embodiment, the same reference numerals are given to the same portions and detailed description thereof will be omitted.

FIG. 8 shows a third embodiment. The right half portion of the guide groove 17 is curved sharply to the front right side in a sharp curve, and the left half portion of the guide groove 17 is curved more gently than the right half portion and is curved convexly to the front left side. . The right end of the guide groove 17 is located to the right of the center O of the turntable 5. The distance l1 from the center O of the turntable 5 to the right end of the guide groove 17 is the distance O1 from the center O of the turntable 5 to the guide groove 17.
Is formed to be smaller than the distance 12 to the top of the guide groove 17, and the distance 13 from the top of the guide groove 17 to the left end of the guide groove 17 in the vehicle front-rear direction is formed to be much smaller than the distance 14 in the vehicle width direction.

Therefore, when the pinion gear 7 is moved from the state in which it is engaged with the right end of the guide groove 17 as shown in 1a of FIG. 8, the slide arm 6 moves while the right half portion of the guide groove 17 is moving. While rotating counterclockwise with the turntable 5, it slides slightly forward, and as shown in FIG.
The seat 1 moves slightly ahead of the vehicle while rotating counterclockwise. Further, when the pinion gear 7 moves in the left half of the guide groove 17, the slide arm 6 slides with the turntable 5 while gradually rotating counterclockwise, and the seat 1 gradually rotates counterclockwise with the opening portion. 9 approaching, FIG.
Finally, as shown in 1c of FIG. Other configurations are almost the same as those in the first embodiment.

The motor 16 for rotating the pinion gear 7 is not installed, and the outer circumference of the pinion gear 7 and the guide groove 1 are not provided.
It is possible to rotate and slide by manually pushing the seat 1 without forming teeth on the periphery of the seat 7. Also,
A guide member composed of a guide roller is engaged with the guide groove 17, a pinion gear is fixed to the center axis of the guide roller, and an engaging means composed of a large number of teeth meshing with the pinion gear is arranged along the guide groove 17 in the vicinity thereof. You can also do it. Further, instead of the pinion gear, the chain sprocket may be fixed to the central axis of the guide roller, and the engaging means composed of a chain that meshes with the chain sprocket may be arranged along the guide groove 17 in the vicinity thereof.

When the pinion gear 7 is engaged with the right end of the guide groove 17, a stopper is provided which restricts the movement of the seat 1 and is automatically released by manual operation or when the motor 16 is operated. It is possible to prevent the seat 1 from unexpectedly moving while the vehicle is traveling. Also, the opening 9
It is also possible to rotate the seat 1 so that the seat 1 faces slightly to the left of the vehicle when it comes closest to. In this way, it is possible to get on and off the vehicle slightly from the rear, not from the side directly next to the vehicle.

[0024]

According to the invention of claim 1, since the seat rotates and moves laterally, it becomes possible to bring the seat close to the opening portion, and even a physically handicapped person or an elderly person can comfortably. Even when an elevating device that allows the passengers to get on and off and swings the seat out of the vehicle is installed, the turning radius for raising and lowering the device is small, and thus the device can be made compact. Also, since the support frame that supports the seat can move in any direction in the plane parallel to the bottom plate surface,
Changes in seat movement patterns due to changes in the shape of the guide groove can be easily followed, and as a result, changes in the vehicle type etc. can be easily accommodated by changing the shape of the guide groove without changing other devices. It will be possible.

According to the second aspect of the present invention, the operation of moving the seat can be automatically performed by operating the motor without depending on human power, so that the burden on the helper and the seated person can be reduced. . Further, since the rotation and slide operation of the seat can be performed by one motor, the device can be made compact and inexpensive.

[Brief description of drawings]

FIG. 1 is a plan view of a seat moving device showing a first embodiment.

FIG. 2 is a side view of the seat moving device showing the first embodiment.

FIG. 3 is a rear view of the seat moving device showing the first embodiment.

FIG. 4 is a side view showing a rotation mechanism of a roller guide.

FIG. 5 is a diagram for explaining the raising and lowering of the seat.

FIG. 6 is a diagram showing a movement pattern of a seat in the first embodiment.

FIG. 7 is a diagram showing a movement pattern of a seat in the second embodiment.

FIG. 8 is a diagram showing a movement pattern of a seat in the third embodiment.

[Explanation of symbols]

1 seat 2 support frame 3 vehicle floor 4 bottom plate 5 turntable 6 slide arm 7 pinion gear 8 lifting link mechanism 9 openings 11 seat frame 12 engagement groove 13 First pulley 14 Second pulley 15 belts 16 motor 17 Guide groove 18 front side arm 19 Rear side arm 20 swing arm 21 connecting rod 22 Hydraulic cylinder 24 piston rod

Claims (2)

[Claims] 1. A turntable that rotates in a plane parallel to the bottom plate surface is provided on the upper surface of the bottom plate, and a support frame that supports a seat is linearly supported by the turntable and is guided by the support frame. A seat moving device, wherein a member is provided, and a guide groove for guiding the guide member in a rotating direction and a linear moving direction of the seat is formed in the bottom plate. 2. The motor according to claim 1, wherein the support frame is provided with a motor for rotating the guide member, and the bottom plate is provided with an engagement means for moving the guide member along the guide groove as the guide plate rotates. Seat moving device.