JPH11309175A - Lifting-up seat for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lifting-up seat for a vehicle, which eliminates the need to transfer as lifting-up seats of the prior art put a great burden on wheelchair usersand helpers. SOLUTION: This lifting-up seat includes a singly usable wheelchair 10 and a lifting-up mechanism 50 installed in a vehicle room. The wheelchair 10 held in a seating position is moved into the vehicle room by the lifting-up mechanism 50 and can be utilized as a seat for use in the vehicle room. The wheelchair 10 held in the seating position is moved out of the vehicle room by the lifting-up mechanism 50 and can be separated from the lifting-up mechanism 50.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

2. Description of the Related Art Conventionally, this type of vehicle seat is configured such that a wheelchair user moves between a wheelchair and a seat body to get on and off the vehicle by moving a seat body in a vehicle room to the outside. According to this, getting into the room or moving from the room to the outside can be performed by moving the seat body (lift-up), and the wheelchair user himself can move between the vehicle room and the outside. Since there is no need to perform this operation, getting on and off the vehicle can be performed easily, and the burden on the caregiver can be significantly reduced.

[0003]

However, the movement between the seat body and the wheelchair outside the vehicle compartment still needs to be performed by the wheelchair user himself with the assistance of the caregiver. Effort was not eliminated. Therefore, an object of the present invention is to provide a vehicle lift-up seat that does not need to perform a transfer operation between a seat body and a wheelchair even outside a vehicle cabin.

[0004]

According to a first aspect of the present invention, there is provided a vehicle lift-up seat comprising a wheelchair that can be used alone and a lift-up mechanism installed in a vehicle interior, and the wheelchair is provided by the lift-up mechanism. The lift-up mechanism moves the wheelchair out of the vehicle compartment while holding the seated posture by moving the wheelchair to the interior of the vehicle while maintaining the seated posture. It can be separated from the configuration. According to this vehicle lift-up seat, a wheelchair user can get into a vehicle while sitting in a wheelchair, and after coming out of the room while sitting in a vehicle cabin, disconnects the wheelchair from the lift-up mechanism and performs normal operation. It can be used like a wheelchair. As described above, since it is possible to get in and out of the vehicle while sitting on the wheelchair for outdoor movement, there is no need to perform any movement between the vehicle seat body and the wheelchair outside at the time of getting on and off the vehicle as in the related art, As a result, the burden on wheelchair users and their caregivers can be significantly reduced.

In particular, since a wheelchair is integrally connected to a lift-up mechanism including a frame and wheels as well as a seating portion thereof and moved between a vehicle interior and an exterior, a wheelchair user and a caregiver are provided. It suffices to perform only the connection operation of the lift-up mechanism. For example, there is no need to perform any operation such as separating the seated portion of the wheelchair from the frame side. In this respect, the burden on the caregiver can be reduced. Also, if the frame side is separated and only the seating part is moved,
Although it is necessary to separately load the separated frame side into the vehicle, according to the configuration of claim 1, since the entire wheelchair is configured to be integrally moved and mounted in the vehicle interior, it is not necessary to take the trouble as described above. In this respect, the burden on the caregiver and the like can be reduced, and the ease of use of the lift-up sheet can be improved. Note that maintaining the sitting posture of the wheelchair means maintaining the posture on the road surface, and the posture of the wheelchair in which the wheelchair user sitting in the wheelchair can easily hold the sitting posture without falling down. Say (orientation). In addition, being usable alone means a state in which at least a seating portion (seat body) and a wheel for movement are provided, and can be used as a normal wheelchair.

A vehicle lift-up seat according to a second aspect is the vehicle lift-up seat according to the first aspect, wherein the lift-up mechanism is provided with a turntable installed in a vehicle cabin and on the turntable. A four-link mechanism is provided, and a connecting plate is provided at the tip of the arm of the four-link mechanism, and a hooking recess that opens downward is provided in the wheelchair, and the connection to the hooking recess is made using the operation of the four-link mechanism. The wheelchair is connected to the lift-up mechanism by inserting the upper end of the plate, and the wheelchair can be lifted up by the operation of the four-link mechanism. According to this vehicle lift-up seat, the wheelchair is connected to the lift-up mechanism by moving the four-link arm up and down and inserting the upper end of the connecting plate into the hook recess of the wheelchair from below. As described above, the connection can be performed simply by hooking the connection plate into the recess, and other special connection operation is not required. Therefore, the handling is easy and even a woman or the like can easily operate.

According to a third aspect of the present invention, there is provided the lift-up seat according to the second aspect, wherein a lock bar is provided below the hooking recess so as to be vertically movable, and the lock bar is moved upward. Then, the leading end is engaged with the lower part of the connecting plate whose upper part is inserted into the hooking recess, thereby fixing the lower part of the connecting plate. According to this vehicle lift-up seat, the upper portion of the connecting plate is fixed by being inserted into the hooking concave portion, and the lower portion is fixed by engaging the distal end portion (upper end portion) of the lock bar that has been moved upward. . In this way, the wheelchair is firmly connected to the lift-up mechanism via the connection plate fixed vertically. In addition,
When the lock bar is moved downward, the distal end of the lock bar is detached from the lower portion of the connecting plate, and the lower portion of the connecting plate is released from being fixed.

A vehicle lift-up seat according to a fourth aspect is the vehicle lift-up seat according to any one of the first to third aspects, wherein the wheel of the wheelchair is foldable. According to this vehicle lift-up seat, the wheelchair can be moved into the vehicle cabin with its wheels folded, particularly in a more compact height direction,
This places the wheelchair in a lower position in the passenger compartment,
For example, it can be installed at almost the same height as other seats. Since the wheelchair user can sit at almost the same height as other occupants, the wheelchair user does not have a special feeling (for example, feeling of alienation of being treated specially) in the vehicle cabin.

According to a fifth aspect of the present invention, there is provided a vehicle seat according to the fourth aspect.
The vehicle lift-up seat according to any one of the preceding claims, wherein the lock bar moves upward in conjunction with the folding operation of the wheel of the wheelchair. According to the vehicle seat, when the wheels are folded, the lower portion of the connecting plate is automatically fixed, and two operations can be performed by one operation, so that the usability of the vehicle lift-up seat is improved. First, the wheelchair is temporarily connected to the link mechanism by operating the link mechanism to engage the upper portion of the connection plate with the hooking recess on the wheelchair side. In this temporarily connected state, the link mechanism is actuated to the retracted side of the room, so that the wheelchair is slightly lifted off the ground, thereby making the wheels foldable. When the wheel is folded in this state, the lock bar moves upward in conjunction with this, and the lower portion of the connecting plate is also fixed at this stage. With the upper and lower portions of the connecting plate fixed in this manner and the wheelchair firmly connected to the link mechanism, the wheelchair is lifted indoors by the operation of the link mechanism. Here, when the wheels are folded, it is time to move the wheelchair into the vehicle interior. At this time, it is desirable to fix not only the upper part but also the lower part of the connecting plate, and the two operations performed simultaneously in parallel are linked. By being done,
The usability of the vehicle lift-up seat is improved.
When the wheel is taken out, the lock bar moves down in conjunction with this, whereby the engagement state of the lock bar with the lower portion of the connecting plate is released, thereby further improving the usability. .

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the present invention will be described with reference to FIGS.
A description will be given based on FIG. FIG. 1 shows a vehicle lift-up seat 1 according to the present embodiment. The lift-up seat 1 includes a wheelchair 10 and a lift-up mechanism 50.
It has. The wheelchair 10 has a seat cushion 11a.
And a seat body 11 having a seat back 11b, a substantially L-shaped seat frame 20 for receiving the seat body 11, and a substantially L-shaped seat frame attached along the left and right sides of the seat frame 20. Cover body 30, 3
0 is provided. A footrest 21 is attached to a front portion of the seat frame 20 via support arms 21a, 21a. Also, the two support arms 21a, 21a
A pair of left and right front wheels 22, 22 are attached to the front end of the vehicle. The front wheels 22, 22 are respectively supported by support shafts 22a.
Front wheel stay 22b mounted to be rotatable up and down through
It is rotatably attached to the tip of. As shown by a two-dot chain line in FIG. 3, the front wheels 22, 22 respectively rotate the front wheel stays 22b upward and store them in the wheel storage portions 30a provided at the front of the cover body 30 (folding).
On the other hand, as shown by a solid line in FIG. 3, the front wheel stay 22b is turned downward to contact the ground, thereby functioning as a traveling wheel.

A pair of left and right rear wheels 23, 23 are attached to the rear lower surface of the seat frame 20. As shown in FIG. 3, the rear wheels 23 are also rotatably mounted on the front end of a rear wheel stay 23b which is rotatably mounted on the lower surface of the frame 20 via a support shaft 23a. The rear wheel stay 23b can be accommodated in the wheel accommodating portion 30a of the cover body 30 by rotating the rear wheel stay 23b upward as in the case of 22, 22, and the traveling wheel can be rotated by rotating the rear wheel stay 23b downward to contact the ground. Function as In FIG. 3, the state where the rear wheel 23 is housed in the wheel housing 30a is indicated by a two-dot chain line, and the state where the rear wheel 23 is taken out and grounded is indicated by a solid line. Although not shown, a tension spring is interposed in the front wheel stay 22b and the rear wheel stay 23b so as to exert a biasing force in both the storing direction and the removing direction, whereby the front wheels 22, 22 and Both rear wheels 23,2
Numerals 3 are held in a state where they are housed in the wheel housing portions 30a, respectively, and are held at a take-out position. As shown in FIG. 3, a cushion bar 24 having elastic rubber wrapped around it is attached to the rear side (right side in the figure) of the support shaft 23a of both rear wheels 23. , 23 can absorb the shock transmitted from the road surface to the rear wheels 23, 23 by abutting the rear wheel stays 23b, 23b. That is, the cushion bar 24 functions as a shock absorber.

Next, the left and right cover bodies 30, 30 include:
A rising portion 30b is provided along a side portion of the seat back 11b, and a connection recess 40 that functions when the wheelchair 10 is connected to the link mechanism 50 is disposed inside the rising portion 30b. I have. The two connecting recesses 40 are integrally formed on the side surface of the seat frame 20 and each have a vertically long curved shape and a U-shaped cross section that opens rearward as shown in FIG. ing. As shown in FIG. 3 and FIG. 5, a hooking concave portion 40b is formed in the upper portion of the connecting concave portions 40, 40, and has a folded portion 40a which opens downward. Lock bars 45 for locking the connection state of the lift-up mechanism 50 to the wheelchair 10 are attached to both sides of the seat frame 20 and below the connection recess 40. These two lock bars 4
As shown in FIG. 6, the holders 5 and 45 are supported by the holding brackets 46 so as to be vertically movable. A vertically long guide groove 46a is formed in the holding bracket 46, and a lock bar 45 is formed in the guide groove 46a.
The guide pin 45a attached to is inserted. For this reason, the lock bar 45 has the guide pin 45 a
It can be moved up and down within the range that can be moved within a.

A lock holding portion 4 cut in a substantially right angle direction is formed above the guide groove 46a of the holding bracket 46.
6b is provided. After the lock bar 45 is moved upward, the guide bar 45 is rotated about 90 degrees around the axis.
a enters the lock holding portion 46b from the guide groove 46a, whereby the lock bar 45 can be held at the upper end lock position. Lock bar 4 as described later
By holding the upper end 5 at the upper end lock position, the lower end portion 56d of the connecting plate 56 of the lift-up mechanism 50 described below can be immovably fixed, so that the connection state of the lift-up mechanism 50 can be locked. it can. To release this locked state, the lock bar 45 is rotated in the reverse direction to move the guide pin 45a from the lock holding portion 46b into the guide groove 46a, and then the lock bar 45 is moved downward by its own weight. I just need. As shown in FIGS. 3 and 6, the upper end 45 b of the lock bar 45 is formed in a conical shape in accordance with the shape of the lower end 56 d of the connecting plate 56.
The lower end of the lock bar 45 is bent in an L-shape, which facilitates the 90-degree rotation as described above. The connection and disconnection operations of the lift-up mechanism 50 will be further described later. A pair of armrests 11c, 1 are provided on the left and right sides of the seatback 11b.
1c is mounted so that it can be turned up and down and stored or taken out. A headrest 11d is mounted on the upper part of the seat back 11b. Further, as shown in FIGS. 1 and 2, a handle 12 for a caregiver is attached to a rear surface of the seat frame 20. The handle 12 is formed by bending a pipe material into a U-shape, and is attached across the left and right sides of the seat back 11b.
A brake lever 12a for operating a rear wheel brake is attached to a side portion of the handle 12.
In FIG. 3, illustration of the handle 12 is omitted.

Next, the lift-up mechanism 50 provided in the vehicle compartment will be described. This lift-up mechanism 50
Slide rails 51 and 5 installed on floor F in the vehicle interior
Main base 52 movable in the front-rear direction of the vehicle 1
And a turntable 53 mounted on the main base 52
And a swing base 54 mounted on the rotating plate 53
And a pair of left and right four-joint link mechanisms 55, 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 includes an inner ring 53a and an outer ring 53.
The outer ring 53b is fixed to the main base 52, and the inner ring 53a is fixed to the lower surface of the swing base 54. The turntable 53 allows the swing base 54 to move approximately 90 degrees between the forward direction of the vehicle and the direction toward the vehicle side (the door opening D side, see FIGS. 1 and 2).
It is supported rotatable by degrees. This swing base 54
Are held by a rotation lock mechanism (not shown) at two positions toward the front of the vehicle and toward the vehicle.

As shown in FIG. 9 (not shown in FIG. 7), an arc-shaped pinion gear 54a is attached to the swing base 54, and a rack 51a that meshes with the pinion gear 54a has a door opening side (see FIG. 9). 8 is mounted on the floor F along the slide rail 51).
And the sliding operation of the main base 52 are performed in conjunction with each other. That is, when the wheelchair 10 that has been moved into the room is started to rotate from the front of the vehicle toward the door opening D, the pinion gear 54a partially lacks teeth as shown in FIG. When the wheelchair 10 is rotated by a certain angle, the pinion gear 54a
The rotation of the swing base 54 and the sliding movement of the main base 52 forward are performed in conjunction with each other, so that the wheelchair 10 moves forward while rotating toward the door opening D side. According to this interlocking mechanism, it is possible to move the wheelchair 10 to an appropriate position for swinging the wheelchair to the outside of the vehicle only by rotating without performing a sliding operation forward of the vehicle, thereby reducing the burden on the caregiver. Can be. Conversely, the same applies to the case where the wheelchair 10 is moved from the outside of the vehicle to the inside of the room. By sliding the wheelchair 10 toward the rear of the vehicle, it is possible to widely secure the feet of the wheelchair user.

The two four-link mechanisms 55, 55 have two link arms 55a, 55b, respectively, and the lower ends of the front link arms 55a, 55a have support shafts 55c, 55c, respectively.
It is rotatably connected to the side of the swing base 54 up and down through 55c. 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, and the two link arms 55b, 55b are connected to the swing base 54 via the connecting shaft 57. Are connected so as to be rotatable up and down. The connecting shaft 5
7, an electric cylinder 90 is connected as a drive source for swinging the two four-bar linkages 55, 55 to the outside of the room. This electric cylinder 90 will be described later. Connecting plates 56 are attached to the tips of the two four-bar linkages 55, 55, respectively. These two connecting plates 56, 5
The link arms 55a and 55b in front and rear of the
It is rotatably connected via 6a and 56b. As shown in FIGS. 3 and 4, each of the connecting plates 56 has a substantially flat plate shape which can be inserted into the connecting recess 40 of the wheelchair 10 with almost no gap, and the upper end 56c thereof is as shown in FIG. Has a shape that can be fitted into the hooking recess 40b of the connecting recess 40 without any gap. When the upper end portion 56c of the connecting plate 56 is fitted into the hooking concave portion 40b, displacement of the upper end portion 56c in the detaching direction (rightward in FIG. 3) is prevented by the folded portion 40a. On the other hand, the lower end 56 d of the connecting plate 56 is
5b is abutted to prevent the lower end portion 56d from being displaced in the detaching direction (rightward in FIG. 3), thereby preventing the connecting plate 56 from being detached from the connecting concave portion 40, and thus the wheelchair 10 is lifted up. It is connected to the mechanism 50.

Next, the details of the electric cylinder 90 are shown in FIG.
Is shown in At the approximate center of the connecting shaft 57, two L-shaped support arms 59, 59 are fixed, and an electric cylinder 90 is mounted via the two support arms 59, 59. The electric cylinder 90 includes an electric motor 91
, A gear box 92 and a ball screw 94. When the electric motor 91 is started, the screw shaft 94 a rotates with the torque amplified by the gear box 92, whereby the screw shaft 94 a is screw-fitted to the screw shaft 94 a. The block-shaped nut 94b moves in the axial direction of the screw shaft 94a. The screw shaft 94a is rotatably supported by a cylindrical screw shaft case 93 provided on the gear box 92, and the screw shaft case 93 is provided between the distal ends of the two support arms 59, 59. , 59a so as to be rotatable up and down. On the other hand, nut 9
Plate-like brackets 95, 95 are attached to both side surfaces of 4b, and the ends of both brackets 95, 95 are connected via pivots 96 to the vicinity of the front end of the bottom surface of the swing base 54 so as to be rotatable up and down. ing.

According to the electric cylinder 90 constructed as described above, when the electric motor 91 is started in the normal rotation direction with the wheelchair 10 facing the door opening D side by the swing base 54, the screw shaft 94a rotates. As a result, the nut 94b relatively moves to the tip end side of the screw shaft 94a. Nut 94
b is fixed between the support arms 95, 95 that rotate vertically through the support shafts 96, 96, and consequently the screw shaft 94a rotates axially rearward (upward in FIG. 8) while rotating. Moving. When the screw shaft 94a moves backward, the screw shaft case 93 integrally moves backward, so that the support arms 59, 59 and the connecting bar 57 rotate in the direction of arrow A in FIG. 55b, 5
5b and, consequently, the two four-bar linkages 55, 55 are tilted in the direction of the arrow C (outside of the room) in FIG. By this swinging operation, the connecting plates 56, 56
Moves outside through the door opening D. On the other hand, when the electric motor 91 is rotated in the reverse direction, the screw shaft 94a moves axially forward (downward in FIG. 8), and the connecting shaft 57 moves in the direction indicated by the arrow B in FIG.
In the direction of rotation, whereby the two four-link mechanism 55, 55
Is turned in the direction of arrow D (indoor side) in FIG.
6, 56 are returned to the indoor side.

The lift-up mechanism 50 thus constructed
Is connected or disconnected from the wheelchair 10 as follows. While the following operations are performed, the wheelchair user may remain seated on the seat body 11 and move to a predetermined position in the vehicle compartment while seated. FIG. 1 shows a state in which the wheelchair 10 is separated from the lift-up mechanism 50. In this state, in the lift-up mechanism 50, the main base 52 has moved to the front end position of the slide rails 51, 51, and the swing base 54 is directed to the outside of the room. Further, both four-link mechanisms 55, 5
5 is in a state of being tilted to the swing-out side. On the other hand, in the wheelchair 10, the front wheels 22, 22 and the rear wheels 23, 2
3 is taken out of the wheel storage portion 30a and the wheelchair 1
0 can be used alone, that is, used to travel on the street as a normal wheelchair. The wheelchair user remains seated on the seat body 11 as described above. In order to connect the wheelchair 10 to the lift-up mechanism 50 from such a state, the wheelchair 10 is approached backward to the lift-up mechanism 50,
0 are connected to the connecting recesses 40 of the wheelchair 10.
Fit into 40. Thereafter, the electric motor 91 of the electric cylinder 90 is reversely rotated to move the four-bar linkages 55, 55 slightly in the upright direction.
The upper end 56c of 56 is fitted into the hooking recesses 40b, 40b of the connecting recesses 40, 40.

Next, the lock bars 45, 45 are raised to bring the upper end 45b thereof into contact with the lower end 56d of the connecting plate 56, and are rotated by 90 degrees around the rear axis to guide the guide pins 45a.
Into the lock holding portion 46b, thereby holding the lock bars 45, 45 at the lock position at the upper end. With the above operation, the upper end 56c of the connecting plate 56 is restrained by the hooking recess 40b, and the lower end 56d is
5, the connecting plate 56 is fixed to the rear of the wheelchair 10. After the lift-up mechanism 50 is connected to the wheelchair 10 in this way, the electric cylinder 90 of the lift-up mechanism 50 is activated to move the four-joint link mechanisms 55, 55 to the upright side (indoor side).
As a result, the wheelchair 10 rises from the ground. At this stage, the lift-up mechanism 50 is temporarily stopped, and the front wheels 22, 22 and the rear wheels 23, 23 are moved to the wheel storage portions 30a, 30a.
30a. This state is shown in FIG. After storing the front wheels 22, 22, and the rear wheels 23, 23, the lift-up mechanism 50 is operated again to the indoor side to move the connected wheelchair 10 indoors. In FIG. 7, the electric cylinder 90 is stopped and the lift-up mechanism 50 is stopped at the stage where both the four-bar linkages 55, 55 have moved to the standing position and the wheelchair 10 has moved to a state where it is almost positioned on the swing base 54.
Stops. At this stage, the two-bar linkages are locked in the upright position by a swing lock mechanism (not shown), so that the wheelchair 10 is held above the swing base 54. After the wheelchair 10 has been moved into the room in this way, the wheelchair 10 and the swing base 54 are integrally rotated about 90 degrees by manual operation and positioned in the forward direction of the vehicle. As described above, the pinion gear 54a and the rack 5
The wheelchair 10 slides rearward while rotating toward the front of the vehicle due to the meshing action of 1a. Even at this stage, the wheelchair user remains seated on the seat body 11, so that the wheelchair user is seated at a predetermined position in the vehicle compartment facing forward by the above operation.

When going out of the room from a state where the user is seated at a predetermined position in the room as described above, the operation opposite to the above operation may be performed. Also in this case, the wheelchair user uses the seat body 11.
It is not necessary to perform a transfer operation from the vehicle exclusive seat to the wheelchair as in the related art. The wheelchair user slides forward while rotating the wheelchair 10 toward the door opening D while sitting, and then moves the wheelchair 10 out of the room by operating the lift-up mechanism 50 to the swing-out side. At the stage when the wheelchair 10 has completely moved out of the room, the lift-up mechanism 50 is stopped once, and the two front wheels 22, 22 are stopped.
Then, the two rear wheels 23 are taken out. After that, the lift-up mechanism 50 is activated again to the swinging side to bring the wheelchair 10 into contact with the ground. After the wheelchair 10 is grounded, the lift-up mechanism 50 is stopped again, and the lock bar 45 is moved downward to release the lock of the connecting plate 56. When the lift-up mechanism 50 is operated in the swinging direction again in this released state, the two connecting plates 56, 56 are displaced downward, whereby the upper ends 56c, 56c are hooked by the concave portions 40b, 40b.
The wheelchair 10 is separated from the lift-up mechanism 50 by advancing the wheelchair 10 at this stage. The wheelchair 10 separated from the lift-up mechanism 50 in this way can be moved independently, and can be used without any difference from a normal wheelchair.

As described above, according to the vehicle lift-up seat 1 of the present embodiment, the wheelchair 10 which can be used as a normal wheelchair is integrated (the seat frame 20 and the front and rear wheels 22, 22, 23, 23). (In a state equipped with the like) and used as a vehicle seat by moving into a room, so that a wheelchair user can sit at a predetermined position in the vehicle room without performing any conventional transfer operation. , And from the seating position in the vehicle cabin to the outside. As described above, since the wheelchair user can remain seated on the seat body 11 of the wheelchair 10, getting on and off the vehicle becomes very easy, and as a result, the burden on the caregiver is greatly reduced. In addition, since the wheelchair 10 is moved by the lift-up mechanism 50, the separation / mounting operation of the seat body in the case where the seat body of the wheelchair is separated from the wheel side and only the seat body is moved into the vehicle interior is performed. There is no need to do this, and this also reduces the burden on caregivers and the like. Further, it is not necessary to separately load the separated wheel side into the vehicle. Further, connecting recesses 40, 40 are provided on both sides of the seat back, and the connecting plates 5 are provided in the both connecting recesses 40, 40.
The configuration in which the seats 6 and 56 are connected allows the reclining function of the seat back to be used.

Next, another embodiment of the lock bar 45 will be described. The lock bar 45 exemplified above is moved up and down independently by manual operation to lock the connecting plate 56.
Although the configuration is such that the unlocking is performed, a configuration in which the locking and unlocking operation is performed in conjunction with the storing / removing operation of the rear wheels 23 and 23 (an interlocking lock type) may be employed.
This embodiment is shown in FIG. A description of the same points as in the above-described embodiment will be omitted, and the same reference numerals will be used in the following description. A cam plate 80 is provided on the side of the rear wheel stay 23b which can be turned up and down via the support shaft 23a.
Is attached. An arc-shaped cam surface 80a is formed on the upper surface of the cam plate 80. The cam surface 80a is provided at the center of rotation of the rear wheel stay 23b (the support shaft 23).
a) is set along a direction that gradually moves away from
The setting is such that the lower the rear wheel stay 23b is rotated, the lower the displacement. A lock bar 81 is mounted above the cam surface 80a. This lock bar 8
1 is supported on the side of the seat frame 20 via a bracket 82 so as to be vertically movable. Rock bar 8
A guide roller 84 is rotatably attached to the lower end of the unit 1 via a holding block 83. Since the compression spring 85 is interposed between the holding block 83 and the bracket 82, the lock bar 81 is urged downward, and the urging force causes the guide roller 84 to move the cam plate 80 It is pressed against the surface 80a. On the other hand, the lock bar 81 is provided below the connecting plate 56.
Block 8 having a lock hole 86a into which a hole can be inserted.
6 is attached.

According to this structure, the rear wheel stay 23b is rotated downward as shown by the two-dot chain line in FIG.
Is removed, the cam surface 80a is located at the lowermost position, so that the guide roller 84 pressed by the cam surface 80a and, consequently, the lock bar 81 are located at the lowermost position (unlock position). The upper end of the bar 81 does not reach the lock hole 86a of the lock block 86. In this state, the wheelchair 10 is retracted and the connecting plate 56 is inserted into the connecting recess 40. Thereafter, the lift-up mechanism 50 is operated to move the connecting plate 56 upward. It is inserted into the concave portion 40b and the rearward displacement is regulated. This is as described above. After the upper end portion 56c of the connecting plate 56 is hooked and inserted into the concave portion 40b, the lift-up mechanism 50 is further operated to the inside of the room, whereby the front and rear wheels 22, 22, 22, 23,
3 is raised, and in this state, the front and rear wheels 22, 22, 2
3 and 23 are stored in the wheel storage portion 30a of the cover body 30. At this time, when one of the rear wheel stays 23b is turned upward, the cam surface 80a is relatively displaced upward during the turning process, so that the lock bar 81 moves upward against the compression spring 85. When the rear wheel stay 23b is rotated until the rear wheel 23 is completely housed as shown by the solid line in FIG. 10, the cam surface 80a is relatively displaced to the highest position, whereby the lock bar 81 is raised. The upper end of the lock block 86 is inserted into the lock hole 86a of the lock block 86 after reaching the moving end.

When the upper end of the lock bar 81 is inserted into the lock hole 86a of the lock block 86, the rearward displacement (the rightward displacement in the figure) of the lower end of the connecting plate 56 is regulated.
As a result, the connecting plate 56 is fixed in the connecting recess 40.
Thereafter, the wheelchair 10 can be moved to a predetermined position in the room by operating the lift-up mechanism 50 as described above. Conversely, if the wheelchair 10 is moved out of the cabin and the rear wheel 23 is taken out, the cam surface 80a is displaced to a relatively low position, and the lock bar 81 is moved downward by the compression spring 85. The upper end of 81 is pulled out of the lock hole 86a of the lock block 86, and the lower end of the connecting plate 56 is unlocked. As described above, the lock bar 81 is interlocked with the storage / removal operation of the rear wheel 23.
Is moved up and down to lock and unlock the lower end of the connecting plate 56, so that there is no need for the user to directly operate the lock bar 45 as described above. Usability can be further improved. It should be noted that only the locking operation may be linked to the folding operation of the wheel (the rear wheel 23), and the unlocking operation may be separately performed by a manual operation.

The connecting recesses 4 are provided on both sides of the seat body 11.
Although the configuration in which 0 and 40 are provided is illustrated, other portions may be provided on the back surface of the seat back of the seat body 11, for example.
Further, in addition to providing the connecting recesses at two places on the left and right sides, a connecting recess may be provided at one place at the center of the back surface of the seat back. In this case, both 4-link mechanisms 55 in the lift-up mechanism,
55 are connected to each other, one connecting plate is provided at the center of the connecting portion, and this one connecting plate is fitted and connected to a connecting recess provided at one central portion on the back surface of the seat back. can do. Alternatively, the lift-up mechanism 50
Instead of two sets as shown in the 4-bar link mechanism in
A set of four-bar linkages 55 may be used.

[Brief description of the drawings]

FIG. 1 is a view showing an embodiment of the present invention, and is a perspective view in a state where a wheelchair is separated from a lift-up mechanism.

FIG. 2 is a perspective view showing a state where the lift-up mechanism is connected to a wheelchair and the wheelchair is lifted from the ground.

FIG. 3 is a side view of the vehicle lift-up seat,
It is a figure which shows the connection structure with respect to a wheelchair of a lift-up mechanism.

FIG. 4 is a cross-sectional view taken along line AA of FIG. 3, showing a state in which a connecting plate is inserted into a connecting recess.

FIG. 5 is a side view showing an engagement state of an upper end portion of a connecting plate with a hooking concave portion of the connecting concave portion.

FIG. 6 is a side view showing a support state of the lock lever.

FIG. 7 is an overall perspective view of a lift-up mechanism.

FIG. 8 is an overall perspective view of the electric cylinder.

FIG. 9 is a plan view of a mechanism for linking a rotation operation of a swing base and a slide operation of a main base.

FIG. 10 is a side view of an interlocking lock type lock bar and its periphery.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Lift-up seat for vehicles 10 ... Wheelchair 11 ... Seat main body 20 ... Seat frame 22 ... Front wheel, 23 ... Rear wheel 30 ... Cover body, 30a ... Wheel storage part 40 ... Connection concave part, 40b ... Hook concave part 45 ... Lock bar Reference Signs List 50 lift-up mechanism 51 slide rail 52 main base 53 rotating plate 54 swing base 55 4-link mechanism 56 connecting plate 56c upper end 80 cam plate 90 electric cylinder F vehicle floor D Door opening

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Takafumi Hijikata 100 Kanayama, Ichiriyama-cho, Kariya-shi, Aichi Pref.

Claims (5)

[Claims] 1. A seat for use in a vehicle, comprising: a wheelchair that can be used alone; and a lift-up mechanism installed in a vehicle interior, wherein the lift-up mechanism moves the wheelchair into a vehicle interior while maintaining a sitting posture. A lift-up seat for a vehicle, wherein the lift-up mechanism is configured to move the wheelchair out of the vehicle compartment while keeping the seated posture by the lift-up mechanism and to be able to separate from the lift-up mechanism. 2. The vehicle lift-up seat according to claim 1, wherein the lift-up mechanism includes a rotating disk installed in the vehicle interior, and a four-link mechanism installed on the rotating disk.
While a connecting plate is provided at the tip of the arm of the four-link mechanism, a hooking recess that opens downward is provided in the wheelchair, and the upper portion of the connecting plate is inserted into the hooking recess using the operation of the four-link mechanism. A lift-up seat for a vehicle, wherein the wheelchair is connected to the lift-up mechanism, and the wheelchair can be lifted up by the operation of the four-link mechanism. 3. The vehicle lift-up seat according to claim 2, wherein a lock bar is provided below the hooking recess so as to be vertically movable, and the lock bar is moved up to move a tip end thereof.
A lift-up seat for a vehicle, wherein a lower portion of the connecting plate is fixed by engaging a lower portion of the connecting plate having an upper portion inserted into the hooking recess. 4. The vehicle lift-up seat according to claim 1, wherein a wheelchair wheel is configured to be foldable. 5. The vehicle lift-up seat according to claim 4, wherein the lock bar moves upward in conjunction with a folding operation of the wheel of the wheelchair.