JP2001213203A - Seat device for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce caregiver's labor required for moving a seat device having a seat body and front and rear folding wheels when the seat device is used as a wheeled chair in the seat device for vehicle capable of being moved to the inside and outside of a cabin by a lift-up device and being separated from the lift-up device to use it as the wheeled chair singly. SOLUTION: This seat device incorporates a wheel-in-motor 160 composed in a compact manner on an inner peripheral side of a wheel 162 of a rear wheel 70 of the seat device and can run by itself by the wheel-in-motor 160.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle seat device that enables a disabled person or an elderly person (hereinafter simply referred to as a "seat person") to easily get on and off a vehicle.

[0002]

2. Description of the Related Art Conventionally, as this kind of sheet, for example, a sheet disclosed in Japanese Patent Application Laid-Open No. H11-309175 has been provided. The vehicle seat device includes a seat device having front and rear wheels that can be folded and a seat body, and a seat device installed in a vehicle interior. The seat device is connected to the seat device to maintain the seating posture of the seat body while connecting the seat device to the vehicle. A lift-up device for moving between the room and the outside of the vehicle, wherein the lift-up device allows the seat device to be moved into the vehicle compartment and the seat device can be used as a seat for the vehicle compartment; After the seat device is moved out of the vehicle compartment by the device, the seat device is separated from the lift-up device and the seat device can be used alone as a wheelchair.

According to this vehicle seat device, a seated person can get into the vehicle while sitting on the seat device,
In addition, since the seat device can be separated from the lift-up device and used as a normal wheelchair after leaving the room while sitting on the seat device, the occupant can transfer between the seat for the vehicle interior and the wheelchair. Therefore, the burden on the occupant and his / her caregiver can be greatly reduced. In addition, since the movement of the seat device between the vehicle interior and the exterior of the vehicle interior can be performed by the lift-up device, the load on the caregiver can also be significantly reduced in this regard.

According to this vehicle seat device, the front and rear wheels of the seat device are foldable along the lower surface of the seat body, so that the occupant can sit on the seat device together with the seat device. When the passenger rides on the vehicle, the front and rear wheels are folded along the lower surface of the seat body so that the occupant can sit in the vehicle cabin at substantially the same height as the fellow passenger. For example, it was possible to sit without feeling alienated (for example, receiving special treatment).

[0005]

However, according to the above-mentioned conventional vehicle seat device, when the seat device is separated from the lift-up device and the seat device is used alone as a wheelchair, the caregiver can use his or her own power. A large effort was required to move the sheet device by pushing or pulling it alone. The present invention has been made in view of this problem, and enables a caregiver to easily move a seat device out of a passenger compartment and use it alone as a wheelchair, while allowing a seated person to easily get on and off a vehicle. It is an object of the present invention to provide a vehicle seat device that can move a seat device.

[0006]

SUMMARY OF THE INVENTION Accordingly, the present invention provides a vehicle seat device having the structure described in the above claims.
According to the vehicle seat device of the first aspect, the wheel drive motor applies a rotational driving force to the wheels, so that the caregiver can move the seat device by pushing or pulling with less force (electric assist). Equation), whereby the labor of the caregiver and the seated person can be significantly reduced.

Here, conventionally, for example, Japanese Unexamined Patent Application Publication No.
As disclosed in Japanese Patent Publication No. 30 or Japanese Unexamined Patent Application Publication No. 9-215713, there is provided an electric wheelchair in which an electric motor for rotating and driving the wheels is incorporated in the wheels and the wheels are rotationally driven. Since these conventional electric wheelchairs have relatively large wheels, the wheel-in motor also has a large size, and therefore, the wheel-in motor is usually directly mounted on the seat body, and the wheel-in motor controls the wheels. Since it was configured to be driven to rotate, it did not have a structure for folding the wheels compactly. As a result, even when the vehicle is mounted on a vehicle, it cannot be seated at the same height as other seats of the vehicle (the same environment as other occupants), and these conventional general wheelchairs cannot be loaded on the vehicle, for example. Since the occupants were carried into a room or the like, the occupants had a feeling of alienation that only themselves received special treatment.

As described above, a wheelchair has been provided in which a relatively large-diameter wheel is driven to rotate by an electric motor (wheel-in motor) directly attached to a seat body. By mounting a small wheel-in motor and rotating the small-diameter wheel of, for example, about 8 inches by the wheel-in motor, the wheel-in motor can be used as an electric wheelchair outside the cabin, while the wheel is folded and mounted in the cabin. In such a state, no seat apparatus has been provided which can be seated at the same height as the seated person of the other seat and at a position where a normal occupant usually sits. According to the configuration of the first aspect, when used as an electric wheelchair, the burden on the caregiver and the occupant can be significantly reduced, and the stay is rotated and the wheel is mounted in the vehicle interior in a folded state. Accordingly, the seated person can sit in the same environment as the seated person of the other seat.

According to the second aspect of the present invention, the vehicle seat apparatus further includes a lift-up device in addition to the structure of the first aspect. Since it is possible to move between the caregivers, the burden on the caregiver is greatly reduced. Claim 3
According to the vehicle seat device described above, since the turning drive force can be given to the seat device by making the rotation speed or the rotation direction of the left and right wheel-in motors different, the traveling direction of the seat device can be changed. The work of the caregiver and the seated person can be greatly reduced. According to the vehicle seat device of the fourth aspect, since the front wheels can be folded more compactly in the height direction, when the seat device is installed in the vehicle interior, it is set to the same height as other seats. Becomes easier. According to the vehicle seat device of the fifth aspect, since the stay can be folded more compactly, the seat device can be installed more compactly in the height direction.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the present invention will be described with reference to FIGS.
This will be described with reference to FIG. 1 and 2 show the entirety of a vehicle seat device 1 according to the present embodiment. The vehicle seat device 1 includes a seat device 10 and a lift-up device 50 installed in the vehicle interior for moving the seat device 10 between the vehicle interior and the exterior of the vehicle interior. By connecting the seat device 10 to the lift-up device 50 and operating the lift-up device 50,
The seat device 10 can be moved from the interior of the vehicle to the exterior of the vehicle while maintaining the seating posture, and can be moved from the exterior of the vehicle to the interior of the vehicle. By moving the seat device 10 into the vehicle interior,
Is used as a normal vehicle seat, and can be used alone as a wheelchair by moving out of the cabin and separating from the lift-up device 50.

First, the seat device 10 includes a seat body 11.
And front and rear wheels 60, 60, 70, 70 that can be folded. The seat body 11 includes a seat cushion 11.
a, and a seat back 20
It is fixed in a state where it is placed on the. FIG. 3 shows a seat device 1.
0 shows a state where the seat body 11 is excluded. The front wheels 60, 60 and the rear wheels 7 are mounted on the seat frame 20.
0 and 70 are foldably attached via an interlocking mechanism 35. That is, the rear ends of the rear wheel stays 71, 71 are supported by the rear portions of the left and right side frames 21, 21 of the seat frame 20 so as to be rotatable up and down via the support shaft 71a. At the lower ends of the rear wheel stays 71, 71,
Rear wheels 70 each incorporating a wheel-in motor 160
Is attached. 13 to 15 show the details around the mounting portions of the rear wheels 70, 70.

A substantially flat motor bracket 161 is attached to the lower end of the rear wheel stay 71, and a wheel-in motor 160 is attached to an outer surface (right side in FIG. 15) of the motor bracket 161. The wheel-in motor 160 is compactly incorporated on the inner peripheral side of the wheel 162 of the rear wheel 70.
In the present embodiment, the rear wheels 70, 70 have a relatively small diameter (about 8 inches in diameter). A rear lid 163 is provided at the rear end of the wheel-in motor 160, and the rear lid 163 is provided with bolts 164 to 16
4, the outer surface of the motor bracket 161 (FIG. 15)
At the right side). This back lid 163
A cylindrical field iron core 165 is provided at the front end of
166, and a front cover 167 is fixed to the front end of the field iron core 165 by bolts 168 to 168.

An electric motor 170 of the wheel-in motor 160 is installed in a space defined by the front cover 167, the field core 165, and the rear cover 163. The rotor 176 of the electric motor 170 includes bearings 171,
It is rotatably supported in a bridging state between the front lid 167 and the rear lid 163 via 172. This field iron core 1
A stator 177 (permanent magnet) is attached to the inner peripheral surface of the rotor 65 so as to face the outer peripheral surface of the rotor 176.
Further, wheel bearings 190 are provided on the outer peripheral surface of the field iron core 165.
The rear end of the wheel 162 is attached to the wheel-in motor 1 by the wheel bearing 190.
60 is rotatably supported. The commutator 173 located at the rear of the rotor 176 has a brush 17
4 are slid by the biasing force of the spring 175.

The output shaft 176a of the rotor 176 is connected to the front lid 16
7, and a sun gear 176b is fixed to the output shaft 176a. This sun gear 1
76b, a plurality of planetary gears 181 to 18
1 is arranged. Planetary gears 181 to 181
Has a large gear portion 181a and a small gear portion 181b. The large gear portion 181a is meshed with the sun gear 176b, and the small gear portion 181b is meshed with the internal gear 182. Each planetary gear 181 is rotatably supported via a support shaft 181c in a space between the front cover 167 and a gear train holding cover 183 attached to the front side of the front cover 167. The gear train holding cover 183 is fixed to the front cover 167 by bolts 184 to 184.

The internal gear 182 is fixed to the inner peripheral surface of the wheel 162. Gear row holding lid 1
An outer lid bearing 191 is attached to the inner peripheral surface of the 83, and the outer lid 192 is rotatably supported by the wheel-in motor 160 via the outer lid bearing 191. The outer lid 192 is fixed to the front end surface of the wheel 162 by fixing screws 193 to 193. An annular holding ring 194 is fixed to the rear end surface of the wheel 162 by fixing screws 195 to 195. The bead portion of the rear wheel 70 is held by the holding ring 194 and the ear portion 162a formed on the front side of the wheel 162.

The wheel-in motor 1 constructed as described above
60 is compactly incorporated on the inner peripheral side of the wheel 162 of the rear wheel 70 having a relatively small diameter. The electric motor 170 of the wheel-in motor 162 is driven by a DC power supplied from a battery via electric wiring (not shown). The power supply battery is mounted on the back of the seat back 11b. This battery is charged by a charger installed on the lift-up device 50 side in a state where the seat device 10 is connected to the lift-up device 50 (when the battery is mounted in the vehicle interior). The handle 104 provided on the upper part of the seat back 11b has a wheel-in motor 16
Operation switches (not shown) for starting / stopping operations 0, 160, switching between low speed and high speed, and switching between normal rotation and reverse rotation are provided. This operation switch
It is arranged at a position where a caregiver who grips the handle portion 104 and moves and operates the seat device 10 can operate quickly and easily. Further, although not shown, the occupant is seated on the armrest 11 c of the seat body 11 by the seat device 10.
There is provided a joystick-type operation lever for performing a moving / stopping operation, a low-speed / high-speed switching operation, and a forward / backward switching operation. The rear wheels 70, 70 can be rotationally driven by the wheel-in motors 160, 160 configured as described above, whereby the seat device 10 can be driven by itself.

Further, both wheel in motors 160, 160
Are controlled independently of each other by a motor control circuit (not shown). With this motor control circuit, the two wheel-in motors 160 switch the rotation direction,
The number of rotations can be switched and the number of rotations can be made different between left and right, whereby the seat device 10 can be switched forward and backward, can be switched between high speed and low speed, and can be turned left and right.

Next, as shown in FIG.
1 and 71 are connected by a connecting rod 72. Therefore, both rear wheel stays 71, 71 rotate up and down integrally. A rear end of a rear wheel link arm 74 is connected to a longitudinal center of the connecting rod 72 via a support shaft 73 so as to be rotatable up and down. The front end of the rear wheel link arm 74 is rotatably connected to the center of the moving frame 80 in the longitudinal direction via a support shaft 75. The moving frame 80 will be described later.

A front frame 23, a middle frame 22, and a rear frame 24 are mounted in a bridging manner from the front side between the side frames 21 and 21 of the seat frame 20. A footrest support frame 100 is attached to the front frame 23, and a flat footrest 101 is provided at the center of the footrest support frame 100.
Is attached so that it can be taken out and stored. L-shaped support frames 102, 10 are provided on both sides of the footrest support frame 100.
2 are attached, and both support frames 102, 102
A connecting rod 103 is attached in a bridging manner therebetween. At both ends of the connecting rod 103, substantially central portions of the front wheel stays 91 are attached rotatably up and down via support shafts 91a. Both front wheel stays 91,
A fork-shaped front wheel bracket 96 that is rotatable around the axis of the front wheel stay 91 is attached to a lower portion of the front wheel stay 91, and the front wheel 60 is rotatably attached to the front wheel bracket 96. Therefore, the front wheels 60, 60
Is attached to the front wheel stay 91 so as to be swingable (the rotation axis of the front wheel 60 is movable along the horizontal plane direction). On the other hand, at the upper ends of both front wheel stays 91, 91,
A front end of a front wheel link arm 93 is rotatably connected via a support shaft 92. Both front wheel link arms 9
3 has a support shaft 94 and an L-shaped bracket 9 respectively.
5, and is rotatably connected to an end of the moving frame 80.

Next, between the front frame 23 and the middle frame 22 of the seat frame 20, two slide bars 81, 81 are attached in parallel with each other. The moving frame 80 is slidably attached to the front and rear via the two slide bars 81 and 81. A nut 82 is mounted substantially at the center of the moving frame 80.
, A screw shaft 83 is inserted in a meshing state. The rear end of the screw shaft 83 is rotatably supported by the middle frame 22,
The front end is connected to an electric motor 85 via a gear box 84. When the electric motor 85 rotates forward or backward, the screw shaft 83 rotates forward or reverse through the gear box 84, and the moving frame 80 moves forward or parallel through the meshing action of the screw shaft 83 and the nut 82. Moving. A mechanism for moving the moving frame 80 in parallel, that is, mainly the electric motor 85, the screw shaft 83, and its peripheral devices constitute a driving device 86 for folding the front and rear wheels 60, 60, 70, 70.

According to the driving device 86, the electric motor 8
5 and the moving frame 80 is moved forward in parallel,
Since the front wheel link arms 93 move forward, the front wheel stays 91 rotate in the clockwise direction (direction for moving the front wheel 60 rearward) around the support shaft 91a, respectively. The front wheels 60, 60 are folded rearward. On the other hand, the electric motor 85 rotates forward to move the moving frame 8.
When 0 moves in the forward direction, the rear wheel link arm 74 also moves forward, so that the connecting rod 72 moves forward, so that both rear wheel stays 71, 71 rotate counterclockwise in the drawing to move both The rear wheels 70, 70 are folded forward.
Hereinafter, the moving direction (forward) of the moving frame 80 when the electric motor 85 is rotated forward, the front wheel link arms 93, 93
, The direction of rotation of the front wheel stays 91, 91 (clockwise direction in FIG. 3), the rear wheel link arm 74.
Direction of movement (forward), and the direction of rotation of the rear wheel stay 71 (FIG. 3).
In the counterclockwise direction)
Also called.

Conversely, when the electric motor 85 rotates in the reverse direction, the moving frame 80 moves rearward in parallel, so that the front wheel link arm 9
The front wheel stays 91, 91 rotate counterclockwise in the figure around the support shafts 91a, 91a, whereby the front wheels 60, 60 are taken out of the folded position. . Further, when the moving frame 80 moves rearward, the rear wheel link arm 74 moves rearward, so that the two rear wheel arms 71, 71 rotate clockwise in the drawing around the support shaft 71a, respectively. Both rear wheels 70,
70 is taken out from the folded position downward. Hereinafter, the moving direction or the rotating direction of each unit when the electric motor 85 rotates in the reverse direction is also referred to as a “removing direction”. in this way,
When the moving frame 80 is moved by the driving device 86, the front wheels 60, 60 and the rear wheels 70, 70 are interlocked and folded upward or taken out downward by the interlocking mechanism 35. FIG. 4 shows the front wheels 60, 60 and the rear wheels 7 in the take-out position.
0, 70 are indicated by solid lines, and the front wheels 60, 60 and the rear wheels 7
The state where 0 and 70 are folded is indicated by a two-dot chain line.

Next, when the front wheels 60 are folded, the posture is forcibly changed from the vertical posture to the horizontal posture. As described above, the front wheel brackets 96, 96 for rotatably supporting the front wheel 60 are rotatably supported around the axis of the front wheel stay 91 with respect to the front wheel stay 91, so that the front wheels 60, 60 It is supported so that it can swing right and left about the core, that is, the caster axis C.
On the other hand, as shown in FIGS.
Motor brackets 161 and 16 attached to the tip of
A substantially V-shaped posture regulating guide 77 is attached to the inner side surface of each of them. This posture regulation guide 77
Is formed by bending a bar material into a substantially V shape, and has a vertical portion 77b orthogonal to the motor bracket 161 and an oblique portion 77a which is inclined outwardly toward the tip end of the rear wheel stay 71. ing. At substantially the center of the oblique portion 77a, a collar 77d is mounted so as to be rotatable and slidable in a certain range in the axial direction. Therefore, when the rear wheel arm 71 is at the take-out position, the collar 77d is located closer to the lower side of the oblique portion 77a due to its own weight.

The thus configured posture regulating guide 77,
According to 77, when the front wheels 60, 60 and the rear wheels 70, 70 are folded, the collars 7 of the posture regulating guides 77, 77 are used.
7d and 77d abut on the edge of the front wheel 60, respectively. The position where the collars 77d abut against each other is the edge of the front wheel 60 and is set to be a position displaced from the caster axis C. In this contact state, the rear wheel stay 71 rotates upward at a higher speed than the front wheel stays 91, 91, whereby the posture of the front wheel 60 is gradually changed from the vertical posture to the horizontal posture. Since the collars 77d, 77d are rotatable and slidable in a certain range in the axial direction, the collars 77d, 7d associated with the posture changing operation of the front wheels 60, 60 are provided.
The movement of the contact position between the front wheels 7d and the front wheels 60 (movement along the outer periphery of the front wheels 60) is smoothly performed, and thus the posture changing operation and folding operation of the front wheels 60, 60, and further, the folding of the rear wheels 70, 70. The operation is performed smoothly.
The vertical posture of the front wheel 60 refers to a posture in which the rotation axis (axle) is along the horizontal direction (parallel to the ground) during the folding operation of the front wheel 60, and the lateral posture is the front wheel 6.
At the time of completion of the folding operation of 0, it refers to a posture in which the rotation axis is aligned in a vertical direction (a direction orthogonal to the ground).
As described above, when the front wheels 60 are stored, the posture is changed to the lateral posture, so that the size of the downward projection can be reduced by that amount. Since the stowage height can be reduced, the special consciousness of the occupant (such as a feeling of alienation of being treated specially) can be eased.

Next, as shown in FIG. 1, each of the left and right cover bodies 30, 30 is provided with a rising portion 30b along the side of the seat back 11b, and inside the rising portion 30b. A connection portion 40 for connecting the seat device 10 to the lift-up device 50 is provided. Details of the connecting portion 40 are shown in FIGS. 9 and 10. Since the two connecting portions 40, 40 are configured symmetrically, the connecting portion 40 on the left side as viewed from the occupant will be described as shown in FIGS. At the rear of the left side frame 21 of the seat frame 20, a substantially L-shaped first
A side plate 41 is fixed in a rising shape, and a second side plate 42 is fixed above the first side plate 41 in parallel with a predetermined interval. The front edge between the side plates 41 and 42 is closed by an upper front plate 43 and a lower front plate 44. Upper front plate 43
Is bent in an inverted U-shape, and a hooking concave portion 40a for holding the connected upper portion 56c of the connecting plate 56 in a holding shape is formed in the upper portion of the connecting portion 40.

Both side plates 41, 42 and upper and lower front plates 43, 4
4, a substantially box-shaped connecting portion 4 opened rearward and downward.
The connecting plate 56 of the lift-up device 50 is fitted through the rear and lower openings. As shown in the drawing, a guide edge 42a bent outward at a substantially constant width is formed at the rear end edge of the second side plate 42, and the guide edge 42a is connected to the connecting portion 40 by the lift-up device 50. It functions as a guide plate when the plate 56 is fitted. A pair of left and right connecting portions 40, 40 provided in this manner
And the connecting plates 56, 56 of the lift-up device 50, respectively.
The seat device 10 is connected to the lift-up device 50 by fitting. In addition, both side plates 41 and 4
A lock bar 45 is fixed to the upper portion between the two in a bridging manner. The lock bar 45 engages with the connecting plate 56 of the lift-up device 50 to connect the connecting plate 56 to the connecting portion 40. The state is locked.
Details on this point will be described later.

Next, the lift-up device 50 installed in the passenger compartment will be described. This lift-up device 50
As shown in FIG. 12, a main base 52 movable in the front-rear direction of the vehicle via slide rails 51, 51 installed on a floor F in the vehicle interior, a rotating disk 53 mounted on the main base 52, and a rotating disk The swing base 54 includes a swing base 54 and a pair of left and right four-bar linkages 55 and 55 attached to both sides of the swing base 54. In the present embodiment, no special driving means for moving the main base 52 in the front-rear direction is provided, and therefore, the moving operation is performed by a manual operation. The position of the main base 52 in the vehicle longitudinal direction can be locked at an arbitrary position by a slide lock mechanism not shown. Note that the main base 52 may be electrically driven by, for example, a sliding mechanism that combines a motor and a rack and pinion.

The turntable 53 has an inner race 53a and an outer race 53b rotatably assembled to each other. The outer race 53b is fixed on the main base 52, and the inner race 53a is fixed to the lower surface of the swing base 54. The rotating base 53 supports the swing base 54 so as to be rotatable by about 90 degrees between the front direction of the vehicle and the direction toward the vehicle (the door opening D side, see FIGS. 1 and 2). The swing base 54 is held at two positions, that is, toward the front of the vehicle and toward the vehicle, by a rotation lock mechanism (not shown).

Although not shown, the swing base 54
An interlocking mechanism for interlocking the rotation of the swing base 54 with the sliding operation in the vehicle front-rear direction is interposed between the vehicle and the vehicle floor F. This interlocking mechanism includes an arcuate pinion gear attached to the lower surface of a swing base 54, an intermediate gear rotatably supported by the main base 52 and meshing with the pinion gear, and a slide rail 51 on the vehicle compartment side on the floor F. And a rack engaged with the intermediate gear.

Next, the two-joint link mechanisms 55, 55 have two link arms 55a, 55b, respectively, and the lower ends of the front link arms 55a, 55a are supported on side walls 54c of the swing base 54. It is vertically rotatably connected via shafts 55d, 55d. On the other hand, the lower ends of the two link arms 55b, 55b on the rear side are integrally connected by one connecting shaft 57 which rotates with respect to the side wall portion 54c. The arms 55b, 55b are connected to the swing base 54 so as to be rotatable up and down. An electric cylinder 95 is connected to the connection shaft 57 as a drive source for swinging the two four-bar linkages 55 and 55 to the outside of the room.

The connecting plates 56 described above are attached to the tips of the two four-bar linkages 55, 55, respectively. The front and rear link arms 55 with respect to the two connecting plates 56,56.
The upper ends of a and 55b are rotatably connected via support shafts 56a and 56b. Both connecting plates 56, 56 are shown in FIG.
As shown in FIG.
It has a substantially flat plate shape that can be fitted into the device with almost no gap. When the upper portion 56c of the connecting plate 56 is fitted into the hooking concave portion 40a of the connecting portion 40, the displacement of the upper portion 56c in the detaching direction (rightward in FIG. 10) is regulated. Lock pawls 5 are provided at the lower portions of both connecting plates 56, 56, respectively.
8 is provided, and the rearward displacement of the connection plate 56 is also regulated by hooking the lock claw 58 against the lower front plate 44 of the connection portion 40 from below.

A locking recess 56d is formed in the front side of both connecting plates 56, 56 in a cut shape. On the other hand, FIG.
As shown in FIG. 10, a block 55c is attached to each of the link arms 55b, 55b on the rear side of the four-bar linkage 50 near the support shaft 56b. As shown in FIG. 10, connecting plates 56, 56 are connected to connecting portions 4 respectively.
0, the lock bar 45 of the connecting portion 40 fits into the lock concave portion 56d, and the connecting plate 5
6 is restricted from moving backward. In addition, when the seat device 10 is moved into the room by the operation of the lift-up device 50, the front and rear link arms 55a,
5b is located almost upright, so that the above-mentioned block 55
c protrudes above the lock bar 45, whereby the relative movement of the lock bar 45 from the lock recess 56d is prohibited, and the connection state of the lift-up device 50 to the seat device 10 in the vehicle interior is reliably maintained. Sliding plates 56e, 56e each having a predetermined plate thickness are attached to both side surfaces of both connecting plates 56, 56, respectively. The connecting plates 56, 56 are formed by the sliding plates 56e, 56e.
Is in the sheet thickness direction with respect to the connecting portion 40 (the sheet device 10
(In the width direction), and can be smoothly movably fitted in the plane direction.

Next, the lower ends of the connecting plates 56, 56 are connected by a receiving frame 59. Seat device 10
Is connected to the lift-up device 50, the receiving frame 59 is positioned substantially below the rear frame 24 of the seat frame 20 of the seat device 10 from above. As shown in FIG. 11, the right and left side frames 2 of the rear frame 24
Positioning pins 105 for positioning with respect to the lift-up device 50 are attached to the two positions closer to 1 and 21 so as to protrude downward. On the other hand, positioning holes 59a, 59a are formed in the receiving frame 59, and the positioning pins 105 are inserted into both the positioning holes 59a, 59a, whereby the lift-up device 50 is positioned with respect to the sheet device 10. You.

A power connector (so-called junction connector) is provided on the rear frame 24 of the seat frame 20.
The male side 110a of 110 is attached. On the other hand, the female side 110b of the power supply connector 110 is attached to the receiving frame 59. Therefore, when the seat device 10 is connected to the lift-up device 50, the rear frame 24 of the seat frame 20 is positioned substantially in an overlapping manner on the receiving frame 59, and the male side 110a of the power connector 110 is connected to the female side 110b. And the seat device 10 and the lift-up device 50 are also electrically connected. The male side 110a of the power connector 110 is connected to the electric motor 85 of the driving device 86 and the charging circuit of the power battery of the wheel-in motors 160,160. Therefore, the male side 11 of the power connector 110
0a and the female side 110b are connected, electric power is supplied to the electric motor 85 of the drive device 86, whereby the front wheel 6
0, 60 and the rear wheels 70, 70 can be folded or taken out.
In this state, the power supply batteries 0, 160 are connected to the charger mounted in the vehicle compartment, whereby the power supply battery can be charged for a sufficient time while the vehicle is running.

The vehicle seat device 1 configured as described above.
According to this, by separating the seat device 10 from the lift-up device 50 (see FIG. 1), the seat device 10 can be used alone as a wheelchair. When the seat device 10 is separated from the lift-up device 50, the front wheels 60, 60 and the rear wheels 70, 70 are taken out downward and are in contact with the road. In the detached state, the caregiver activates the operation switch of the handle portion 104, or the occupant activates the joystick-type operation switch arranged on the armrest 11c, whereby the wheel-in motor 16 is activated.
0, 160 is activated, and both rear wheels 70, 70 are rotationally driven. For this reason, the caregiver can use the seat device 1 with less force.
0 can be moved, which significantly reduces the burden on the caregiver. In addition, the seated person operates the operation switch of the armrest 11c to make the seat device 10 self-propelled, so that the seated person can move alone without the assistance of the caregiver.

Further, the seat device 10 can be moved backward by operating the operation switch of the handle portion 104 or the operation switch of the armrest 11c to reverse the left and right wheel inmotors 160, 160. The seat device 10 can be moved at a low speed or at a high speed by changing the rotation speed of the wheel 160, 160, and the seat device 10 can be moved at different rotation speeds of the two wheel-in motors 160. The device 10 can be turned left or right.

From such a separated state, the sheet device 1
In order to mount the seat device 10 in the vehicle cabin by connecting the seat device 10 to the lift-up device 50, the seat device 10 is moved backward (closed) to the lift-up device 50, and the receiving frame 59 is positioned below the rear frame 24 of the seat frame 20. Is located.
Thereafter, the electric cylinder 90 of the lift-up device 50 is activated to the upright side to move both the four-bar linkages 55, 55 slightly in the upright direction, so that the two connecting plates 56, 56 are moved.
And the receiving frame 59 is integrally raised, whereby the receiving frame 5
9 is superimposed on the rear frame 24 of the seat frame 20 from below. In the process, the positioning pins 105, 10
5 is inserted into the positioning holes 59a, 59a, whereby the lift-up device 50 is positioned with respect to the seat device 10, and the male side 110a of the power connector 110 is provided.
Is connected to the female side 110b, and power is supplied to the driving device 86.

When the two connecting plates 56, 56 rise, the connecting plates 56, 56 are connected to the connecting portion 4 of the seat device 10.
0,40. When the upper end portions 56c, 56c of the two connecting plates 56, 56 fit into the hooking recesses 40a of the connecting portion 40, the locking claws 58, 58 of the two connecting plates 56, 56 respectively engage the lower front plate 44 of the connecting portion 40. The hook is hooked on the lower edge from below, and the lock pin 45 is fitted into the lock recess 56 d of the connecting plate 56. At this stage, the two connecting plates 56 are connected to the connecting portion 40 of the seat device 10 so as to be relatively immovable in the left-right direction and the rear.

In this way, the two connecting plates 56, 56 are connected to the connecting portions 40, 40 while moving the four-bar linkages 55, 55 of the lift-up device 50 to the upright side (inside of the room), and then the electric cylinder 90 is continuously rotated in the reverse direction. By moving the four-bar linkage 55 to the upright side in this way, the seat device 10 can be lifted off the ground. At this stage, the lift-up device 50 is temporarily stopped. The seat device 10 is thus lifted off the ground so that the front wheels 60, 60 and the rear wheels 7
0,70 can be folded. The manner in which the front wheels 60, 60 and the rear wheels 70, 70 are folded is shown in FIG.

In order to fold the front wheels 60, 60 and the rear wheels 70, 70, the electric motor 85 of the driving device 86 may be started to the normal rotation side. At this stage, power is supplied to the electric motor 85 of the driving device 86 via the power connector 110. When the electric motor 85 starts to rotate forward, the moving frame 80 moves parallel to the folding side, so that the front link arms 93, 93 and the rear link arm 74 move in the folding direction (forward, left in FIG. 4). When both front wheel link arms 93, 93 move in the folding direction, both front wheel stays 91, 91 rotate in the folding direction (counterclockwise direction in FIG. 4) around the support shaft 91a, whereby both front wheels 60, 93 are rotated. 60 moves in the folding direction.
On the other hand, at the same time, the two rear wheel stays 71, 71 rotate in the folding direction (clockwise direction in FIG. 4) about the support shaft 71a, respectively, whereby the rear wheels 70, 70 move in the folding direction.

In the final stage of the folding operation of the front wheels 60, 60 and the rear wheels 70, 70, both the front wheels 60,
The posture 60 is forcibly changed from the vertical posture to the horizontal posture.
This situation is shown in FIGS. 5 and 6
As shown in FIG.
When 0 and 70 approach, the collars 77d of the attitude regulating guide 77 abut against the edges of the front wheels 60 and 60, respectively. When the rear wheel stays 71, 71 further rotate in the folding direction in this contact state, the bracket 9 of the front wheel 60 is rotated.
6 rotates with respect to the front wheel stay 91, whereby the front wheels 60, 60 ride on the oblique portion 77 a and assume a lateral posture. FIGS. 7 and 8 show the state in the horizontal posture.

When the positions of the front wheels 60, 60 are changed from the vertical position to the horizontal position, the folding of the front wheels 60, 60 and the rear wheels 70, 70 is completed. The moving frame 80
The slide front end position and the rear end position are detected by a sensor (limit switch). When the movable frame 80 reaches the slide front end position and the folding of the front wheels 60, 60 and the rear wheels 70, 70 is completed, the slide front end position of the movable frame 80 is detected by a sensor, and the electric motor 85 is output based on the output signal of the sensor. Stops. Conversely, when the moving frame 80 reaches the rear end position and the front wheels 60, 60 and the rear wheels 70, 70 are taken out, the rear end position of the moving frame 80 is detected by the sensor, and based on this, the electric motor 85 is automatically activated. Stop.

Thus, the front wheels 60, 60 and the rear wheels 70, 7
After the folding of the lift-up device 50 is completed,
The seat device 10 can be accommodated in the vehicle cabin by operating the vehicle in the vehicle cabin. Double 4-bar link mechanism 5
The electric cylinder 90 stops and the lift-up device 50 stops at the stage when the seat devices 5 and 55 are moved to the standing position and the seat device 10 is almost positioned on the swing base 54. At this stage, both four-bar linkages 55, 5
5 is locked in the upright position by a swing lock mechanism (not shown).
4 is held above.

The seat device 10 is provided with a swing base 54.
When the link arms 55b, 55b located on the rear side of the four-bar linkages 55, 55 are located substantially upright, the block 55c projects above the lock bar 45 as shown in FIG. As a result, the connected state of the seat device 10 to the lift-up device 10 is locked, and upward movement is restricted. After moving the seat device 10 into the room in this way, the seat device 10 and the swing base 54 are integrally rotated about 90 degrees by manual operation to be positioned at the seating position facing the front of the vehicle. In addition, the seat apparatus 10 is slid rearward while rotating to a position facing the vehicle forward to reach a seating position by the interlocking mechanism described above. Thus, a series of operations until the seat device 10 that can be used alone is positioned at the seating position in the vehicle compartment is completed.

When the seat device 10 is connected to the lift-up device 50 as described above and the power supply connector 110 is connected when the seat device 10 is mounted at a seating position in the vehicle cabin, the seat device 10 and the lift-up device 50 are electrically connected. Is also connected. For this reason, the charging device installed on the lift-up device 50 side can be activated to charge the power battery mounted on the back of the seat back 11b.

Conversely, in order to move the seat device 10 from the seated position in the vehicle compartment to the outside of the vehicle compartment so that it can be used alone as a wheelchair, the above operation may be performed in reverse. That is, first, the seat device 10 is moved to the front by a predetermined distance in the vehicle interior while rotating the seat device 10 toward the door opening D by manual operation. With the seat device 10 facing the door opening side,
The electric cylinder 90 of the lift-up device 50 is activated in the reverse direction to activate the two-bar linkages 55 and 55 to the outside. Thereby, the seat device 10 can be moved from the vehicle interior to the exterior of the vehicle interior. When the lift-up device 50 is operated to the outdoor side, the link arms 55a, 55b of the two four-bar linkages 55, 55 tilt in the falling direction.
0, the link arms 55a,
55b are connected to the connecting plate 56 by supporting shafts 56a, 56
It rotates counterclockwise around b. When the rear link arms 56b, 56b rotate counterclockwise with respect to the connecting plate 56, respectively,
c is retracted from above the lock pin 45, whereby the lock pin 45 becomes relatively detachable from the lock recess 56d.

When the seat device 10 is moved out of the passenger compartment and is not yet in contact with the ground, the folded front wheel 6
0, 60 and the rear wheels 70, 70 are taken out. This can be achieved by activating the electric motor 85 of the driving device 86 to the reverse rotation side. When the electric motor 85 is rotated in the reverse direction, the moving frame 80 moves in parallel to the take-out side (to the right in FIG. 4), whereby the two front wheel link arms 93, 93 and the rear link arm 74 are moved.
Moves to the ejection side. Both front wheel link arms 93, 9
When 3 moves to the take-out side, both front wheel stays 91, 91
Respectively rotate about the support shaft 91a in the take-out side (clockwise direction in FIG. 4).
0,60 is taken down. At the same time, both rear wheel stays 71, 71 rotate to the take-out side (counterclockwise in FIG. 4), and both rear wheels 70, 70 are taken out downward.

After the front wheels 60, 60 and the rear wheels 70, 70 are taken out in this way, the lift-up device 50 is further operated to the outdoor side (the four-link mechanism 55, 55 is tilted to the outdoor side). Accordingly, the seat device 10 can be grounded. After the seat device 10 is grounded, when the lift-up device 50 is continuously operated to the outdoor side, the connecting plates 56, 56 are extracted from the connecting portions 40, 40. That is, at this stage, as described above, the block 55c is retracted from above the lock pin 45, and the lock pin 45 is relatively detachable from the lock recess 56d.
The connection plate 56 is movable downward. For this reason, after the seat device 10 is grounded, the lift-up device 50 is further operated to the outdoor side to displace the two connecting plates 56, 56 downward with respect to the connecting portions 40, 40. As a result, the lock claws 58, 58 are disengaged from the lower edge of the lower front plate 44, the lock pin 45 is disengaged from the lock recess 56d, and the upper end 56c of the connecting plate 56 is disengaged from the hook recess 40a. When both connecting plates 56, 56 are displaced downward with respect to the connecting portions 40, 40, the receiving frame 59 is moved.
Is disengaged from the rear frame 24 of the seat frame 20, whereby the positioning pins 105, 105 are positioned by the positioning holes 59a,
The male connector 110a and the female connector 110b of the power connector 110 are separated from the power connector 59a, and the power supply to the seat device 10 is cut off.

Thus, both connecting plates 56, 56 are connected to connecting portion 4
When the seat device 10 is moved forward after being displaced downward with respect to 0 and 40, the seat device 10 is completely separated from the lift-up device 50. Thereafter, the seat device 10 can be used alone as a wheelchair. On the other hand, the lift-up device 50 from which the seat device 10 is separated has four-link mechanisms 55, 55.
Is actuated in the direction of returning to the interior side of the vehicle and is accommodated in the vehicle interior.

The vehicle seat device 1 configured as described above
According to this, since the small wheel-in motors 160 are built in the inner peripheral sides of the wheels 162 and 162 of the rear wheels 70 and 70 of the seat device 10, respectively,
70 is rotatable. Therefore, when the seat device 10 is moved out of the cabin and is used as a wheelchair in a state separated from the lift-up device 50, the caregiver requires less labor by rotating the two wheel-in motors 160, 160 ( The seat device 10 can be moved with the effort of pushing and pulling), thereby greatly reducing the burden on the caregiver.
In addition, by controlling the rotation direction and the number of rotations of the left and right wheel-in motors 160, 160, the seat device 10 can be switched forward and backward, can be switched at low speed and high speed, and can be turned left and right. In the use form, the labor of the caregiver and the seated person can be reduced.

The embodiment described above can be implemented with various changes. For example, the configuration in which the wheel-in motors 160, 160 are built in the left and right rear wheels 70, 70 has been exemplified.
A wheel-in motor may be built in all of the wheels 0 and 70 so that all four wheels may be used as drive wheels. Further, as illustrated, the seat device 10 is turned left and right by making the rotation speeds of the left and right wheel-in motors 160 different from each other, but the steering of the front wheels 60, 60 is seated by a handle provided separately. With this configuration, it is possible to facilitate the case where the occupant moves the seat apparatus 10 by himself (without the assistance of a caregiver).

Further, the illustrated wheel-in motor 16
The clutch mechanism and the brake mechanism can also be incorporated in the zero. By using the wheel-in motor with the clutch, the wheels can be made to idle, so that the resistance when the seat device 10 is moved only by the caregiver's operation can be eliminated. In addition, since the rotation of the wheels can be locked by using a wheel-in motor with a brake, the seat device 10 can be reliably stopped on a slope or the like, and also in this respect, the labor of the caregiver and the seated person can be reduced. can do.

Further, although the configuration provided with the lift-up device 50 for moving the seat device 10 between the vehicle interior and the exterior of the vehicle is exemplified, the present invention can be applied to a seat device without the lift-up device 50. it can. That is, it is also possible to adopt a configuration in which a compact wheel-in motor 160 is built in the wheel of the seat device which is moved by the caregiver or the like between the vehicle interior and the exterior of the vehicle interior.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a vehicle seat device according to an embodiment of the present invention. This figure shows a state where the seat device is separated from the lift-up device.

FIG. 2 is a perspective view showing a vehicle seat device according to the embodiment of the present invention. This figure shows a state in which the seat device is connected to the lift-up device.

FIG. 3 is an overall perspective view of the seat device. In the figure, the illustration of the seat body is omitted.

FIG. 4 is a side view of the seat device. This figure shows the manner in which the front and rear wheels are folded.

FIG. 5 is a side view showing a manner in which a front wheel is changed in posture. This figure shows a stage in which the collar of the posture regulation guide abuts on the front wheels in the vertical posture.

FIG. 6 is a plan view showing a manner in which a front wheel is changed in posture. This figure shows a stage in which the collar of the posture regulation guide abuts on the front wheels in the vertical posture.

FIG. 7 is a side view showing a manner in which a front wheel is changed in posture. This figure shows a state in which the front wheels are in a horizontal posture.

FIG. 8 is a plan view showing a manner in which a front wheel is changed in posture. This figure shows a state in which the front wheels are in a horizontal posture.

FIG. 9 is a perspective view of the vicinity of a connection portion of the seat device and the vicinity of a connection plate of the lift-up device.

FIG. 10 is a side view showing a state where a connecting plate is connected to the connecting portion.

FIG. 11 is a perspective view showing a state in which the rear frame of the seat frame is connected to the receiving frame of the lift-up device, in which the male side of the power connector is connected to the female side, and the positioning pin is inserted into the positioning hole. It is a figure showing a state.

FIG. 12 is an overall perspective view of the lift-up device.

FIG. 13 is an exploded perspective view of the vicinity of a mounting portion of a rear wheel of the seat device.

FIG. 14 is a side view around the rear wheel of the seat device.

FIG. 15 is a longitudinal sectional view of a rear wheel and a wheel-in motor of the seat device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Seat device for vehicles 10 ... Seat device 11 ... Seat body 20 ... Seat frame 35 ... Interlocking mechanism 40 ... Connecting part 50 ... Lift-up device 53 ... Rotating disc 55 ... Four-node link mechanism 56 ... Connecting plate 59 ... Receiving frame 60 ... front wheel 70 ... rear wheel 71 ... rear wheel stay 77 ... attitude control guide 86 ... drive device (for folding front and rear wheels) 91 ... front wheel stay 110 ... power supply connector C ... caster shaft 160 ... wheel in motor 162 ... wheel 163 ... rear lid 165: Field iron core 167: Front cover 170: Electric motor 190: Wheel bearing 191: Outer cover bearing

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Mineo Ninomiya 100 Kanayama, Ichiriyama-cho, Kariya City, Aichi Prefecture Inside Toyota Auto Body Co., Ltd. F-term (reference) in 3K0A AA02 CB19 CE10

Claims (5)

[Claims] 1. A vehicle comprising: a seat body; and front and rear wheels which are foldable via stays rotatably supported by the seat body, and which can be used as a vehicle interior seat by moving into a vehicle interior. A vehicle seat device configured to be able to be used alone as a wheelchair by moving outside the vehicle, wherein a wheel-in motor is attached to the stay, and the wheels are rotationally driven by the wheel-in motor. . 2. A seat device having a seat body, front and rear wheels that are foldable via a stay rotatably supported by the seat body, and a seat device that is installed in a vehicle interior and is connected to the seat device to connect the seat device. A lift-up device for moving the seat device between the vehicle interior and the exterior of the vehicle interior while maintaining the seating posture of the seat device, wherein the seat device is movable into the vehicle interior and can be used as a seat for the vehicle interior, And a vehicle seat device configured to move outside the vehicle compartment and be used alone as a wheelchair separately from the lift-up device, wherein a wheel-in motor is attached to the stay, and the wheels are rotated by the wheel-in motor. A vehicle seat device configured to be driven. 3. The vehicle seat device according to claim 1, wherein the rotation of the wheel-in motors of the left and right wheels is controlled independently of each other. 4. The vehicle seat device according to claim 1, wherein a stay of a front wheel pivots rearward, and a stay of a rear wheel pivots forward to move the front and rear wheels. A posture regulating guide that is foldable, supports the front wheel so as to be able to swing with respect to a stay, and abuts on the stay of the rear wheel to contact the front wheel when folded to guide the front wheel from a vertical posture to a lateral posture. Vehicle seat device provided. 5. The vehicle seat device according to claim 1, wherein a wheel and a wheel-in motor are arranged outside a stay in a seat width direction.