JP4049096B2 - wheelchair - Google Patents

Description

  The present invention relates to a self-propelled electric wheelchair provided with wheels (drive wheels) that are rotated by an electric motor, and relates to a wheelchair that can store wheels when not used as a wheelchair.

Conventionally, for example, Japanese Patent Laid-Open No. 11-309175 discloses a self-propelled electric wheelchair having wheels that are rotated by an electric motor, and a moving device that is installed in a vehicle interior and moves the electric wheelchair between the interior and exterior of the vehicle interior. A vehicular seat device is disclosed.
According to this vehicle seat device, the electric wheelchair separated from the moving device can be used alone as a wheelchair outside the passenger compartment, while the electric wheelchair is stored in the passenger compartment by the moving device. Therefore, the seated person can move between the interior and exterior of the vehicle while sitting on the wheelchair, and thus can get on and off the vehicle very easily.
In addition, in the case of such a vehicle seat device, the moving device in the vehicle interior is connected to the wheelchair outside the vehicle compartment, the moving device is operated in the connected state, and the wheelchair is lifted from the road surface. The wheelchair's seat surface height (seater's hip point) in the passenger compartment is comparable to other passengers by storing the wheel of the wheelchair and lowering the overall height of the wheelchair. Therefore, the seated person can get on without getting alienated from other passengers.
JP-A-11-309175

However, according to the wheelchair in the conventional vehicle seat device, there is a possibility that the wheel may rotate carelessly due to, for example, an erroneous operation of the occupant when the wheel is stored and installed in the vehicle interior. In addition, the mechanical brake device that locks the rotation of the wheel is conventionally provided, but this functions in a state in which the wheel is taken out to the use position and prevents the rotation when the wheel is stored. It was not.
Therefore, an object of the present invention is to provide a wheelchair that can prevent inadvertent rotation in a state where the wheel is stored.

For this reason, this invention was made into the wheelchair of the structure described in each claim of a claim.
According to the wheelchair of Claim 1, the said wheelchair can be stored in a vehicle interior by connecting with a moving apparatus, and it can be used independently as a wheelchair by isolate | separating from a moving apparatus outside a vehicle interior. In the state where the driving wheel is stored, the interlock mechanism restricts the activation of the electric motor for rotating the wheel, thereby preventing the driving wheel from being rotated carelessly. When a certain size is lifted from the road surface by the moving device, the wheel storage mechanism is activated and the wheels are automatically stored. When the wheels are retracted, the activation of the electric motor for rotating the drive wheels is restricted, so that inadvertent rotation is reliably prevented. In addition, the wheel retracting mechanism is operated at a position where the moving device lifts a certain dimension from the road surface, and the drive wheel is automatically taken out. When the driving wheel is taken out, the interlock mechanism of the electric motor is released, and the driving wheel becomes rotatable.
According to the wheelchair of the second aspect, inadvertent rotation of the drive wheels is prevented even when the operation panel is erroneously operated in the state where the drive wheels are stored.
According to the wheelchair of the third aspect, in the state where the driving wheel is stored, inadvertent rotation of the driving wheel is prevented even when either the main operation panel or the auxiliary operation panel is erroneously operated.
According to the wheelchair of the fourth aspect, when the driving wheel is retracted, the power supply circuit of the electric motor for rotating the driving wheel is cut off, so that inadvertent rotation of the driving wheel is surely prevented.
According to the wheelchair of the fifth aspect, it is possible to sit on the wheelchair while being stored in the passenger compartment, and it is possible to reliably prevent inadvertent rotation of the drive wheels while seated.

Next, an embodiment of the present invention will be described with reference to FIGS. FIG. 1 shows a wheelchair 1 of the present embodiment. This wheelchair 1 is used alone outside a passenger compartment as a normal wheelchair, and is connected to a mobile device 100 installed in a vehicle interior of a vehicle M as shown in FIGS. 6 and 19 to 21. It is stored in the vehicle interior by the operation of 100, and can be used as a vehicle seat for a passenger to sit in the state of being stored in the vehicle interior. Hereinafter, in the illustrated embodiment, the case where the wheelchair 1 is stored in the passenger seat position of the vehicle M is illustrated.
First, as shown in FIG. 1, the wheelchair 10 includes a seat cushion 11, a seat back 12, a seat frame 20 that supports them, a pair of left and right front wheels 30, 30 provided on the seat frame 20, and a pair of left and right rear wheels. 40, 40. Armrests 13 and 13 are provided on both sides of the seat back 12. A main operation panel 2 for the seated person to operate the traveling state of the wheelchair 10 is attached to the tip of the right armrest 13 as viewed from the seated person. As shown in FIG. 2, the main operation panel 2 is provided with a lever (joystick) 2a for switching the traveling direction, a power switch 2b, and a speed switching switch 2c for switching the traveling speed. FIG. 4 shows the power supply circuit C1 of the main operation panel 2. The code | symbol U in the figure has shown the control unit by the side of the wheelchair 10. FIG. The main operation panel 2 is connected to the control unit U via a connector A. The first terminal of the connector A is connected to a + 24V power line, the second terminal is connected to the power switch 2b, the third terminal is connected to the ground wire, and the fourth terminal is an LED (green). 2d is connected, LED (red) 2e is connected to the 5th terminal, a speed changeover switch 2c is connected to the 6th terminal, a longitudinal speed command line is connected to the 7th terminal, and the 8th terminal is connected to the 8th terminal. Is connected to a speed command line in the left-right direction, a neutral point potential line is connected to the 9th terminal, and a + 5V power supply line is connected to the 10th terminal.
The control unit U is connected with wheel-in motors 45 and 45 for driving rear wheels, which will be described later, and a battery 26. By operating the main operation panel 2, the left and right wheel-in motors 45, 45 are controlled to rotate independently from each other using the battery 26 as a power source through the control unit U.
As shown in FIGS. 1 and 16, a pair of handle portions 22, 22 are provided on the left and right of the upper portion of the seat back 12 for a caregiver to hold when the wheelchair 10 is moved. A brake lever 22a is provided on each of the handle portions 22 and 22, respectively. By operating the brake levers 22a and 22a, the rear wheels 40 and 40 can be braked. This brake device will also be described later.
In addition, an auxiliary operation panel 3 for the caregiver to operate the wheelchair 10 is attached to the right handle portion 22 as viewed from the caregiver. The auxiliary operation panel 3 and the main operation panel 2 described above correspond to the operation panels described in the claims. As shown in FIG. 3, the auxiliary operation panel 3 includes a power switch 3a, a forward switch 3b, a reverse switch 3c, a high speed switch 3d, a low speed switch 3e, and the like. FIG. 5 shows a power supply circuit C2 of the auxiliary operation panel 3. The auxiliary operation panel 3 is connected to the control unit U via a connector B. The first terminal of the connector B is connected to a + 24V power line, the second terminal is connected to the power switch 3a, the third terminal is connected to the ground wire, and the fourth terminal is an LED (green). 3f is connected, the LED (red) 3g is connected to the 5th terminal, the high speed changeover switch 3d is connected to the 6th terminal, the forward switch 3b is connected to the 7th terminal, and the reverse drive is connected to the 8th terminal. A switch 3c is connected, and a low speed changeover switch 3e is connected to the ninth terminal.
By operating the auxiliary operation panel 3, the left and right wheel-in motors 45, 45 are controlled to rotate independently from each other using the battery 26 as a power source via the control unit U.
Further, as shown in FIG. 16, a battery 26 for supplying power to various electric devices attached to the wheelchair 10 is mounted on the back surface of the seat back 12. As will be described later, the battery 26 is charged by power supply from the mobile device 100 side.

Next, the front wheels 30 and 30 and the rear wheels 40 and 40 are provided symmetrically so that they can be stored upward. 7 and 8 show a support structure for the left and right front and rear wheels 30 and 40 as viewed from the seated person.
First, side frame portions 20L and 20R are provided on the left and right side portions of the seat frame 20 in parallel with each other. Front wheel stays 32 are supported on the front portions of the left and right side frame portions 20L and 20R via pivots 31 so as to be vertically rotatable. A front wheel holder 33 that can swing freely is attached to the lower end of the front wheel stay 32. The front wheel 30 is rotatably supported by the front wheel holder 33. The left and right front wheel stays 32, 32 are connected to each other by a connection bar (not shown). For this reason, the left and right front wheels 30, 30 are integrally stored upward and taken out downward.
Two detected members 37 and 38 are attached to the bracket portion 32 a of the left front wheel stay 32 as viewed from the seated person via the bracket 36. Two wheel retracting detection switches 4 and 5 are attached via brackets 39 in the vicinity of the front end portion of the left frame portion 20L of the seat frame 20 corresponding to the detected members 37 and 38. When the front wheels 30, 30 are retracted upward, the detected members 37, 38 move together on the arc path centering on the support shaft 31, and when each of them reaches a predetermined position, the wheel retract detection is performed. The switches 4 and 5 detect these. Specifically, normally closed (always-on) limit switches are used for the two wheel storage detection switches 4 and 5 respectively, and when the two detected members 37 and 38 reach the predetermined position described above. Then, when both the wheel storage detection switches 4 and 5 are turned off by the detected members 37 and 38, it is detected that the front wheels 30 and 30 are stored. Both the wheel storage detection switches 4 and 5 are incorporated in the power supply circuits C1 and C2. That is, the wheel storage detection switch 4 is connected between the power switch 2b of the main operation panel 2 and the second terminal of the connector A, and the wheel storage detection switch 5 is connected to the power switch 3a of the auxiliary operation panel 3 and the second connector B. Connected between terminals.
On the other hand, rear wheel stays 42 are supported at the rear portions of the side frame portions 20L and 20R of the seat frame 20 via pivots 41 so as to be vertically rotatable. A rear wheel 40 is rotatably supported at the rotating tip of the rear wheel stay 42. The left and right rear wheel stays 42, 42 are connected via a connection bar (not shown) in the same manner as the front wheel stays 32, 32. For this reason, the left and right rear wheels 40, 40 are also integrally stored upward and taken out downward.
In the present embodiment, both the rear wheels 40, 40 are drive wheels. That is, the left and right rear wheels 40, 40 each have an electric motor (hereinafter referred to as a wheel-in motor 45) built therein. The rotation speed and rotation direction of both wheel-in motors 45, 45 are individually controlled on the left and right. The wheelchair 10 can be self-propelled by the rear wheels 40, 40 as drive wheels incorporating the wheel-in motor 45, and the number of rotations of both the wheel-in motors 45, 45 are individually controlled, The wheelchair 10 can be moved forward and backward, and can be turned left and right. These operations are performed by the main operation panel 2 or the auxiliary operation panel 3.

The main operation panel 2 includes a power supply circuit C1 shown in FIG. The power supply circuit C1 includes a power switch 2b of the main operation panel 2 and the wheel storage detection switch 4. For this reason, when the wheels 30 and 40 are stored and the wheel storage detection switch 4 is turned off by the detected member 37, the power supply circuit C2 of the main operation panel 2 is shut off. Therefore, as described later, for example, in a state where the wheelchair 10 is installed in the vehicle compartment and the front wheels 30, 30 and the rear wheels 40, 40 are stored, the occupant forgets to turn off the power switch 2b. Even if the lever 2a of the main operation panel 2 is erroneously operated above, the rear wheels 40, 40 will not rotate carelessly.
The auxiliary operation panel 3 includes a power supply circuit C2 shown in FIG. The power supply circuit C2 includes a power switch 3a of the auxiliary operation panel 3 and a wheel storage detection switch 5. In the power supply circuit C2, a diode D is incorporated between the power supply circuit on the mobile device 100 side and the wheel storage detection switch 5. Therefore, when the wheels 30 and 40 are stored and the wheel storage detection switch 5 is turned off by the detected member 38, the power supply circuit C2 of the auxiliary operation panel 3 is cut off. Therefore, as described later, for example, in a state where the wheelchair 10 is installed in the passenger compartment and the front wheels 30, 30 and the rear wheels 40, 40 are stored, the occupant forgets to turn off the power switch 3a. Even if the forward switch 3b of the auxiliary operation panel 3 is accidentally pushed above, the rear wheels 40, 40 will not rotate carelessly. In FIG. 5, the wheelchair 10 is connected to the moving device 100, and the female-side power connector 25 provided on the wheelchair 10 side is connected to the male-side power connector 158 provided on the moving device 100 side. It is shown in a state where power is supplied from the side, that is, the vehicle M side.

On the other hand, on both side frame portions 20L and 20R of the seat frame 20, slide brackets 51 are provided so as to be movable within a certain range along the side frame portions 20L and 20R, respectively. The slide bracket 51 and the front wheel stay 32 are connected by a front wheel connecting arm 34. The slide bracket 51 and the rear wheel stay 42 are connected by a rear wheel connecting arm 43. That is, the front end side of the front wheel connecting arm 34 is connected to the bracket portion 32a of the front wheel stay 32 via the support shaft 35 so as to be vertically rotatable. On the other hand, the rear end side of the front wheel connecting arm 34 is connected to the slide bracket 51 via the support shaft 52 so as to be vertically rotatable.
Further, the front end side of the rear wheel connecting arm 43 is connected to the slide bracket 51 via the support shaft 52 so as to be vertically rotatable, and the rear end side is connected to the upper portion of the rear wheel stay 42 via the support shaft 44. It is connected so that it can rotate up and down.
As shown in the drawing, the support shaft 35 on the front side of the front wheel connecting arm 34 is set on the rotating tip side of the support shaft 31 of the front wheel stay 32, and the support shaft 44 of the rear wheel connecting arm 43 is set on the support shaft 41 of the rear wheel stay 42. It is set to the rotation tip side rather than. For this reason, when the slide bracket 51 moves to the front side (left side in the figure) as shown by the solid line in FIG. 8, the front wheel stay 32 and the rear wheel stay 42 rotate downward, thereby causing the front wheel 30 and the rear wheel 40 to move. It is taken out to the use position. Conversely, when the slide bracket 51 moves to the rear side (right side in FIG. 8) as indicated by the two-dot chain line in FIG. 8, the front wheel stay 32 pivots upward (clockwise in the figure) around the support shaft 31. In addition, the rear wheel stay 42 is rotated upward (clockwise in the figure) around the support shaft 41, so that the front wheel 30 and the rear wheel 40 are in the retracted position behind the use position. 8, the front wheels 30, 30 are stored on the side of the seat cushion 11, and the rear wheels 40, 40 are stored at positions slightly projecting rearward from the rear portion of the seat cushion 11, as indicated by a two-dot chain line in FIG. Since the front wheel 30 and the rear wheel 40 are respectively stored behind the use position, they can be stored as much as possible in the range not disturbing the seated person. According to this, when the wheelchair 10 is moved into the vehicle interior, the wheelchair 10 can be installed lower, and thus the so-called hip point of the seated person can be set low. Can be eliminated.

Next, as shown in FIG. 11, the seat frame 20 is provided with a wheel storage mechanism 50 for storing the front and rear wheels 30, 30, 40, 40 to the storage position and taking them out to the use position. The wheel storage mechanism 50 moves the slide brackets 51 and 51 back and forth. The wheel storage mechanism 50 includes a drive motor 56 attached to the front portion of the seat frame 20 as a drive source. Output shafts 56a and 56b protrude from both the front and rear portions (lower and upper portions in FIG. 11) of the drive motor 56. Both the output shafts 56a and 56b are rotated in the normal direction or in the reverse direction. Rotational power output from both output shafts 56a and 56b is transmitted to the screw shaft 53 through intermediate transmission blocks 57 and 57 attached to the front corners of the seat frame 20, respectively. Both screw shafts 53, 53 are arranged along both sides of the seat frame 20. A nut block 55 is fitted to both the screw shafts 53 and 53 in a meshed state. The nut block 55 is fixed to the slider 60. The left and right sliders 60, 60 are accommodated in the left and right side frame portions 20L, 20R of the seat frame 20 so as to be movable in the front-rear direction.
As shown in FIG. 12, between the lower surface of the sliders 60 and 60 and the lower surface of the side frame portion 20L (20R), and between the upper surface of the sliders 60 and 60 and the upper surface of the side frame portion 20L (20R), Liners 60a to 60a having high slidability are interposed. The liners 60a to 60a allow the sliders 60 and 60 to move smoothly in the side frame portions 20L and 20R without rattling.
Window portions 20a are respectively provided on the lower surfaces of the side frame portions 20L and 20R. A slide bracket 51 protrudes downward from the window portion 20a. When the drive motor 56 is activated and both the output shafts 56a and 56b rotate, the rotation output is transmitted to the screw shaft 53 through the intermediate transmission blocks 57 and 57, respectively, whereby the both screw shafts 53 and 53 are rotated forward and reverse. Rotate in the direction. By rotating both screw shafts 53, 53 in a synchronized manner, the pair of left and right sliders 60, 60 move together in the front-rear direction, so that the slide brackets 51, 51 move back and forth within the range of the window portion 20a. To do.
As described above, when both slide brackets 51, 51 move back and forth, the front and rear wheels 30, 30, 40, 40 are taken out to the use position and stored in the storage position.
On the contrary, the front wheels 30 and 30 and the rear wheels 40 and 40 stored in interlocking with the front and rear can be taken out downward by starting the drive motor 56 of the wheel storage mechanism 50 in the reverse rotation direction.
When the drive motor 56 rotates in the reverse direction, the nut blocks 55 and 55 and the sliders 60 and 60 move to the front side of the seat frame 20, whereby the slide brackets 51 and 51 move to the front side of the seat frame 20. When the slide brackets 51 and 51 are moved to the front side, the connecting links 34 and 42 are respectively moved to the front side, whereby the rear wheel stays 42 and 42 are rotated downward about the support shafts 41 and 41, and the front wheel stays are moved. 32 and 32 respectively rotate downward about the support shaft 31, whereby the front and rear wheels 30, 30, 40, and 40 are taken out to the lower use position.

Next, as shown in FIGS. 13 to 16, the wheelchair 10 includes a brake device 70 that is used when used alone as a wheelchair outside the passenger compartment. The brake device 70 includes a seat main body side mechanism 70A provided on the seat cushion 11 or the seat frame 20 side, and a wheel stay side mechanism 70B provided on the rear wheel stay 42 side.
The seat body side mechanism 70 </ b> A includes a single lever portion 71 and a pair of left and right operating portions 72 and 72. Details of the lever portion 71 are shown in FIG. 15, and details of the operating portion 72 are shown in FIG. First, the operating portions 72 and 72 are provided in the same configuration at the rear portions of the left and right side frame portions 20L and 20R of the seat frame 20 corresponding to both the rear wheels 40 and 40, respectively. As shown in FIG. 13, the operation part 72 of the left side frame part 20L of the seat frame 20 will be described.
As shown in the figure, an operating lever 74 is provided at the rear portion of the left frame portion 20L of the seat frame 20 so as to be pivotable up and down about a support shaft 75. The operating lever 74 is urged counterclockwise by a torsion spring (not shown). A brake lever 76 of the wheel stay side mechanism 70 </ b> B is provided below the operation lever 74 and above the rear wheel stay 42 so as to be pivotable up and down about the support shaft 77. The brake lever 76 is urged clockwise by a torsion spring (not shown).
When the actuating lever 74 rotates in the clockwise direction in FIG. 13 against the torsion spring, its one end 74 a interferes with one end 76 a of the braking lever 76 as shown by a two-dot chain line in the figure. In this interference state, the actuating lever 74 is further rotated in the clockwise direction in the figure, whereby the brake lever 76 is rotated in the clockwise direction in the figure about the support shaft 77 against the torsion spring. When the brake lever 76 is rotated in the clockwise direction in the drawing, the other end 76b is pressed against the rear wheel 40, whereby a rotational resistance, that is, a braking force is applied to the rear wheel 40.

One end side of each of the two brake wires 78 and 79 is connected to the other end 74 b of the operating lever 74. One brake wire 78 is routed to the lever portion 71 side. The other brake wire 79 is connected to the brake lever 22a for the caregiver to operate. Both brake wires 78 and 79 are inserted into wire covers 78a and 79a each having one end fixed to a fixing plate 20b provided on the left frame portion 20L of the seat frame 20.
The lever portion 71 is provided in the front portion of the right frame portion 20R of the seat frame 20, and is disposed at a position where the seated person can operate the brake lever 73 with the right hand. Reference numeral 80 in FIG. 15 indicates a lever portion base. The lever portion base 80 is fixed to the front portion of the right frame portion 20R. The brake lever 73 and the link lever 81 are supported on the lever base 80. The brake lever 73 is rotatably supported on the lever portion base 80 via a support shaft 82. On the other hand, the link lever 81 is rotatably supported by the lever base 80 via a support shaft 83 on the front side (left side in FIG. 15) of the brake lever 73. The brake lever 73 and the link lever 81 are connected by a connecting lever 84. One end side of the connecting lever 84 is rotatably connected to the link lever 81 via a support shaft 84a, and the other end side is rotatably connected to the brake lever 73 via a support shaft 84b.
A bracket portion 81 a is provided on the rotating distal end side of the link lever 81. The other end side of the brake wire 78 is connected to the bracket portion 81a. The other end portion of the wire cover 78 a through which the brake wire 78 is inserted is fixed to a bracket portion 80 a provided on the lever portion base 80.

The brake lever 73 is biased by a torsion spring (not shown) to the non-braking position side (clockwise direction in FIG. 15) that rotates toward the front side of the seated person. Further, the other end sides of the brake wires 78 and 78 routed from the left and right operating portions 72 and 72 are connected to the rotating tip side of the link lever 81, respectively.
When the brake lever 73 is tilted by manual operation from the non-braking position indicated by the solid line in FIG. 15 to the braking position indicated by the two-dot chain line in FIG. 15 against the torsion spring, the support shaft 84b of the connecting lever 84 is It moves to the opposite side across the line L connecting 82 and the support shaft 84a. In FIG. 15, the line connecting the support shaft 82 and the support shaft 84 a after the brake lever 73 is tilted to the braking position is indicated by the reference symbol L ′.
In other words, each support shaft 82, 83, 84a, 84b constitutes a so-called turnover mechanism. For this reason, when the brake lever 73 is tilted from the non-braking position to the braking position, the link lever 81 rotates to the left in FIG. 15 via the connecting lever 84, so that the brake wire 78 is pulled in the same direction. When the brake wire 78 is pulled, the operating arm 74 rotates in the clockwise direction in FIG. 13 against the torsion spring, whereby the other end 76b of the brake lever 76 is pressed against the rear wheel 40 as described above. Thus, a braking force is applied to the rear wheel 40.
This braking state is maintained when the brake lever 73 is locked at the braking position by the turnover mechanism. The brake lever 73 positioned at the braking position is tilted to the non-braking position side (front side as viewed from the seated person) by the seated person or caregiver to release the tension of the brake wire 78, and the operating lever 74 is moved by the torsion spring. 13, the other end 76b of the brake lever 76 is separated from the rear wheel 40, and the braking state of the rear wheel 40 is released.
Further, the brake wire 79 connected to each operating lever 74 of the pair of left and right operating parts 72, 72 is connected to a brake lever 22a provided at the upper back of the seat back 11b. Therefore, when the caregiver brakes the left and right brake levers 22a, 22a with the hand holding the handle portions 22, 22, the brake wires 79, 79 are pulled when the brake levers 22a, 22a are turned counterclockwise in FIG. As a result, the left and right actuating levers 74 and 47 rotate in the clockwise direction, so that a braking force is applied to the rear wheels 40 and 40. When the brake operation of the brake levers 22a and 22a is released, the operating levers 74 and 74 are returned by the spring biasing force, and the other end 76b of the brake lever 76 is separated from the rear wheel 40, so that the braking state of the rear wheels 40 and 40 is achieved. Is released.
In this non-braking state, as shown by a solid line in FIG. 13, the operating lever 74 and the braking lever 76 are arranged so that an appropriate gap is generated between the one end 74a of the operating lever 74 and the one end 76a of the braking lever 76. The position or the dimensions such as the lengths of the one end portions 74a and 76a are set. For this reason, when the rear wheels 40, 40 are not braked, the rear wheel stays 42, 42 can be rotated rearward without the brake lever 76 interfering with the operation lever 74. It can be stored smoothly.
In the retracted state of the rear wheels 40, 40 and the front wheels 30, 30, the rear wheels 40, 40 are not braked by the brake device 70. However, in this case, since the power circuit of the wheel-in motors 45 and 45 for rotating the rear wheels 40 and 40 is cut off by the interlock mechanism described above, inadvertent rotation of the rear wheels 40 and 40 is prevented. Is done.

Next, details of the moving apparatus 100 are shown in FIGS. The moving device 100 has a function of moving the connected wheelchair 10 between the interior and exterior of the vehicle M through the door opening K of the vehicle M, and the wheelchair 10 stored in the vehicle interior and used as a passenger seat is used in the vehicle longitudinal direction. A first slide mechanism 110 that moves the wheelchair 10 to a position that faces the front of the vehicle when viewed from the seated person and a position that faces the door opening K side, and a rotation mechanism 120 that rotates approximately 90 °. An elevating mechanism 159 for moving the wheelchair 10 facing the door opening K side down by 120 while moving it to the outside of the passenger compartment and a third slide mechanism 140 for moving the wheelchair 10 further to the outer side of the passenger compartment are provided.
Hereinafter, each mechanism 110,120,140,159 of this moving apparatus 100 is demonstrated. A fixed base 111 is attached to the floor F of the vehicle M. A first slide base 113 is provided on the upper surface of the fixed base 111 so as to be slidable in the vehicle front-rear direction via guide rails 112, 112 attached in parallel to the vehicle front-rear direction. Between the fixed base 111 and the first slide base 113, a first slide motor 114a, a screw shaft 114b, and a nut 114c meshing with the first slide motor 114a are interposed. The first slide motor 114 a and the screw shaft 114 b are attached to the fixed base 111, and the nut 114 c is attached to the first slide base 113. For this reason, when the first slide motor 114a is activated, the screw shaft 114b is rotated, whereby the first slide base 113 is moved forward or rearward in the vehicle (in a direction orthogonal to the paper surface in FIGS. 19 to 21).
The rotation mechanism 120 has an outer ring 121 and an inner ring 122 that are coaxially and rotatably combined with each other. The outer ring 121 is fixed to the upper surface of the first slide base 113, and the inner ring 122 is fixed to the lower surface of the intermediate base 131 of the lifting mechanism 159. An electric motor for rotation driving (rotary motor 123) is attached to the upper surface of the first slide base 113. The rotation output of the rotary motor 123 is transmitted to the inner ring 122 via a gear transmission mechanism (not shown), whereby the intermediate base 131 and, as a result, the lifting mechanism 159 and the wheelchair 10 are rotated together.

Next, details of the lifting mechanism 159 and the third slide mechanism 140 are shown in FIGS. First, as shown in FIG. 22 and FIG. 23, the lifting mechanism 159 includes a second slide mechanism 130 and a pair of left and right four-bar linkage mechanisms 133 and 133. The second slide mechanism 130 includes the intermediate base 131 and a second slide base 132 that slides relative to the intermediate base 131. The second slide base 132 is slidably supported via slide rails 160 and 160 attached to the intermediate base 131 in parallel with each other. The slide rails 160 and 160 are positioned parallel to each other along the front-rear direction of the vehicle when the wheelchair 10 is facing the front of the vehicle, and are aligned along the vehicle width direction when the wheelchair 10 is directed toward the door opening K. It will be in the state located substantially in parallel. On the other hand, the second slide base 132 is provided with guide rollers 161 and 161 rotatably on each side. Each guide roller 161 is supported by the guide rail 160 so as to be able to roll. Thus, the second slide base 132 is supported so as to be slidable with respect to the intermediate base 131.
A second drive device 170 having a second slide motor 171 and a screw shaft 172 is interposed between the second slide base 132 and the intermediate base 131. A second slide motor 171 is attached to the lower surface side of the second slide base 132 and a screw shaft 172 is rotatably supported. A nut 173 that engages with the screw shaft 172 is attached to the upper surface of the intermediate base 131. For this reason, when the second slide motor 171 is rotated forward or backward to rotate the screw shaft 172 while the wheelchair 10 is directed toward the door opening K, the second slide base 132 is directed toward the outdoor side or the room. Slide inward (left-right direction in FIGS. 19 to 21).

A pair of left and right four-joint link mechanisms 133 and 133 are attached to the left and right sides of the second slide base 132. Both the four-bar linkage mechanisms 133, 133 are provided with an inner link arm 133a and an outer link arm 133b, respectively. Both link arms 133a and 133b are supported on the side portions of the second slide base 132 so as to be vertically rotatable via support shafts 133c and 133d.
As shown in FIGS. 22 and 24, the left and right inner link arms 133a and 133a each have a structure in which two arm plates are fixed at a predetermined interval. One guide roller 134 is rotatably attached to each arm plate at a position near the support shaft 133c. Both guide rollers 134, 134 are placed on the upper surfaces of guide cams 139, 139 attached to both sides of the intermediate base 131 so as to be able to roll, respectively. The upper surfaces of both guide cams 139, 139 are substantially horizontal horizontal guide surfaces 139a. In addition, an inclined guide surface 139b is formed in a certain range of the upper surface of the distal end of the outdoor side when the wheelchair 10 is directed to the door opening K side, which is the distal end side of both guide cams 139, 139. The inclined guide surface 139b is inclined in a direction downward to the tip side.
As the second slide base 132 moves from the indoor side to the outdoor side, or conversely, from the outdoor side to the indoor side, both the four-bar linkage mechanisms 133 and 133 move together. At the stage where the guide rollers 134, 134 of the inner link arms 133a, 133a roll along the horizontal guide surface 139a, the four-bar linkage mechanisms 133, 133 move in a substantially horizontal state (without tilting up and down), Therefore, the wheelchair 10 and the third slide mechanism 140 move substantially horizontally without being displaced up and down. On the other hand, at the stage where the guide roller 134 rolls along the inclined cam surface 139b, the inner link arm 133a and thus the four-bar linkage mechanisms 133, 133 are tilted upward or downward, thereby the wheelchair 10 and the third slide. The mechanism 140 is raised or lowered. FIG. 21 shows a state in which both the four-bar linkage mechanisms 133 and 133 have moved to the most outdoor side, and thereby the wheelchair 10 has been lowered to the lowest position.

As described above, the seating posture is always maintained without tilting the wheelchair 10 when the wheelchair 10 is moved up and down by tilting the four-bar linkage mechanisms 133 and 133 up and down while moving in the vehicle width direction. Thus, the distance between the fulcrums of the inner and outer link arms 133a and 133b is set appropriately. Accordingly, both the four-bar linkage mechanisms 133 and 133 constitute a four-bar parallel link mechanism.
Rear side engaging portions 200, 200 are provided symmetrically on the outer side surface of the outer link arms 133b, 133b on the rotation base end side (position close to the support shaft 133d). Both rear side engaging portions 200, 200 extend toward the distal end side of the outer link arms 133b, 133b, respectively. Engaging claws 200a are formed at the lower ends of the tips of the rear engaging portions 200 and 200, respectively. Further, front side engaging portions 201, 201 are provided at the upper part of the rotation leading end side (position near the supporting shaft 133f) of both outer side link arms 133b, 133b. The functions of the front and rear engaging members 201 and 200 will be described later.
The third slide mechanism 140 is provided between the distal ends of the pair of left and right four-bar linkage mechanisms 133 and 133. Details of the third slide mechanism 140 are shown in FIGS. The third slide mechanism 140 includes a lifting base 135. The ends of the link arms 133a and 133b of the four-joint link mechanisms 133 and 133 are connected to the side of the elevating base 135 through the support shafts 133e and 133f, respectively.
A wheelchair connection base 151 is slidably provided on the upper surface side of the elevating base 135. A pair of left and right slide rails 141 and 141 are attached to the lower surface side of the wheelchair connection base 151. Two guide rollers 136 and 136 are rotatably attached to the left and right sides of the elevating base 135, respectively. The guide rollers 136 to 136 are supported by the slide rail 141 so as to be able to roll. Thus, the wheelchair connection base 151 is supported so as to be slidable with respect to the lifting base 135.

A third driving device 150 is interposed between the elevating base 135 and the wheelchair connection base 151.
The third drive device 150 includes a third slide motor 152 attached to the lower surface of the wheelchair connection base 151 and a screw shaft 153 that rotates thereby. A nut 154 that engages with the screw shaft 153 is attached to the upper surface of the elevating base 135. For this reason, when the third slide motor 152 is activated and the screw shaft 153 is rotated in a state where the wheelchair 10 is directed to the door opening K side, the wheelchair connection base 151 is in the vehicle width direction (see FIG. 26 to the left and right). The wheelchair 10 is connected to the moving device 100 via the wheelchair connection base 151. Therefore, the wheelchair 10 slides in the vehicle width direction in two stages by the second slide mechanism 130 and the third slide mechanism 140.
Further, as shown in FIGS. 19, 20, 25, and 26, a pair of front main engagement portions 137 and 137 are provided on the front lower surface of the elevating base 135. When the second slide base 132 and the four-bar linkage mechanisms 133 and 133 are returned to the vehicle interior side, the front main engagement portions 137 and 137 are engaged with the front end portions of the intermediate base 131, respectively. As a result, the lifting base 135 and the displacement of the wheelchair 10 and the four-bar linkage mechanisms 133 and 133 in the lifting direction are restricted. However, the front main engagement portions 137 and 137 function only when the wheelchair 10 moves in a direction different from the movement direction during normal use due to a vehicle front collision or the like. For this reason, during the normal use of the vehicle seat 1, the moving operation of the elevating base 135 is not hindered by the front main engagement portions 137 and 137.

Next, as shown in FIGS. 12 and 18, a pair of left and right front side connecting members 210, 210 are provided in a state of projecting downward at the lower front portion of the seat frame 20. As shown in FIG. 10, a pair of left and right front connection engagement members 155 and 155 are provided on the front upper surface of the wheelchair connection base 151 of the moving device 100 with respect to the front connection members 210 and 210. The front side connecting member 210 is provided with an engaging groove 210a for the front side connecting engaging member 155 to be fitted and engaged therewith. The engagement groove 210a is formed by cutting along a substantially arc-shaped path from the lower side of the front side connecting member 210 to the front side obliquely upward. When the wheelchair 10 is connected to the wheelchair connection base 151 and the connection lock bar 155 is fitted in the engagement groove 210a of the front connection member 210, the position of the wheelchair 10 with respect to the wheelchair connection base 151 is mainly regulated. .
In addition, as shown in FIG. 17, a pair of left and right rear side connecting members 211 and 211 are attached to the rear side of the lower surface of the seat frame 20. On the other hand, as shown in FIGS. 10 and 17, rear side connection lock bars 156 and 156 are provided on the rear side of the upper surface of the wheelchair connection base 151. Even when the wheelchair 10 is connected to the wheelchair connection base 151 and the rear connection lock bars 156 and 156 are engaged with the rear connection members 211, the position of the wheelchair 10 with respect to the wheelchair connection base 151 is mainly in the front-rear direction. Be regulated.
As described above, the coupling lock bar 155 is fitted into the engagement groove 210a of the front coupling member 210, and the rear coupling lock bars 156 and 156 are engaged with the rear coupling member 211, whereby the wheelchair 10 is It is positioned with respect to the connection base 151 in the front-rear direction (as viewed from the seated person). In addition, as shown in FIG. 7, positioning wall portions 28 and 28 that are parallel to each other are provided on the inside of the left and right side frame portions 20L and 20R of the seat frame 20 so as to protrude downward (FIG. 7). Then, only the positioning wall portion 28 on the right side as viewed from the seated person is seen). When the wheelchair connection base 151 enters between the positioning wall portions 28, 28, the wheelchair 10 is positioned in the left-right direction (as viewed from the seated person) with respect to the wheelchair connection base 151.
In addition, an arm engaging portion 210b for engaging with the front engaging portion 201 provided on the outer link arm 133b on the moving device 100 side is provided at the rear portion of the front connecting member 210 so as to protrude rearward.
Further, a connection recess 212 is provided between the rear connection members 211 and 211 on the rear side of the lower surface of the seat frame 20. A connecting projection 213 is provided at the center of the second slide base 132 with respect to the connecting recess 212.

When the wheelchair 10 is connected to the wheelchair connection base 151 of the mobile device 100, the front connection engagement on the wheelchair connection base 151 side is engaged with the engagement grooves 210a and 210a of the front connection members 210 and 210 on the wheelchair 10 side as described above. Each of the members 155 is fitted, and the wheelchair 10 is connected to the wheelchair connection bases 151, 211, and the wheelchair connection base 151 side rear connection lock bars 156, 156 are engaged with each other. On the other hand, it is positioned mainly in the front-rear direction and the relative displacement in the same direction is restricted. Further, when the wheelchair connection base 151 enters between the left and right positioning wall portions 28, 28 of the seat frame 20, the wheelchair 10 is positioned in the left-right direction with respect to the wheelchair connection base 151. 151.
As shown in FIG. 18, after the wheelchair 10 is connected to the wheelchair connection base 151, the front and rear wheels 30, 30, 40, 40 are completely stored by moving the sliders 60, 60 to the rear end position. At the bottom near the rear ends of the sliders 60, 60, there are engaging holes 61 for engaging the rear engaging portions 200, 200 provided on the outer link arms 133b, 133b of the four-bar linkage mechanisms 133, 133, respectively. Is provided.
When the second slide base 132 is retracted indoors by the second slide mechanism 130 in this connected state, the left and right four-bar linkage mechanisms 133 and 133 are retracted while tilting upward, and the wheelchair 10 is lifted while Returned to the inside. When the second slide base 132 reaches the retreat end on the indoor side, and then the wheelchair connection base 151 is retreated to the indoor side with respect to the lift base 135 by the third slide mechanism 140, the wheelchair 10 is moved to the four-bar linkage mechanism 133, 133 and the second slide base 132 are displaced toward the indoor side.
As a result, the arm engaging portions 210b and 210b of the front connecting members 210 and 210 on the wheelchair 10 side engage with the front engaging portion 201 of the outer link arm 133b, respectively, and the sliders 60 and 60 on the wheelchair 10 side are engaged. Each of the rear engagement portions 200 on the moving device 100 side enters from the rear. Further, at this stage, the connecting convex portion 213 of the second slide base 132 enters the connecting concave portion 212 on the wheelchair 10 side. FIG. 18 shows the state at this stage.

When the arm engaging portion 210b of the front side connecting member 210 is engaged with the front side engaging portion 201 of the outer link arm 133b, the front portion of the seat cushion 11a of the wheelchair 10 is lifted from the moving device 100. Is regulated. According to this, even if a large inertial force in a direction to lift the front portion of the seat cushion 11a is applied to the wheelchair 10 due to a large impact load generated by a rear collision of the vehicle, for example, the displacement of the wheelchair 10 (Inclination in the rearward tilt direction) can be reliably regulated (measures for rear impact).
In addition, the rear engaging portion 200 enters the sliders 60 and 60 on the wheelchair 10 side, and the connecting convex portion 213 of the second slide base 132 enters the connecting concave portion 212 of the wheelchair 10. Thus, the rear portion of the wheelchair 10, in particular, the rear portion of the seat cushion 11 a is restricted from being lifted from the moving device 100. According to this, even when a large inertial force acts on the wheelchair 10 in a direction to lift the rear portion of the seat cushion 11b due to a large impact load generated by a frontal collision of the vehicle, for example, the displacement of the wheelchair 10 ( (Tilt in the forward tilt direction) can be reliably regulated (measures for forward collision).
Here, the engagement state between the arm engagement portion 210b of the front connection member 210 and the front engagement portion 201 of the outer link arm 133b, the state in which the rear engagement portion 200 has entered the slider 60, and the connection recess 212. As for the state in which the connecting projections 213 have entered, in addition to being in contact with each other, the wheelchair 10 is located with a slight gap, and the wheelchair 10 is moved in a normal use state due to a large inertia force or vehicle vibration. In a normal use state, these do not interfere with each other by making a slight contact in a different direction from the other, so that the wheelchair 10 can move smoothly with respect to the moving device 100. Can be made.
As shown in FIG. 10, male-side power connectors 158 and 158 are arranged on the upper surface of the wheelchair connection base 151. With respect to the male side power connectors 158 and 158, female side power connectors 25 and 25 are arranged on the lower surface side of the seat frame 20 of the wheelchair 10. When the wheelchair 10 is coupled to the wheelchair coupling base 151 of the mobile device 100, the female power connectors 25 and 25 are connected to the male power connectors 158 and 158, respectively. By connecting the female-side power connectors 25, 25 to the male-side power connectors 158, 158, power is supplied from the mobile device 100 side to the wheelchair 10 side. With this power supply, the wheel storage mechanism 50 of the front and rear wheels 30, 30, 40, 40 and other various electric devices are operated on the wheelchair 10 side, and the battery 26 mounted on the back surface of the seat back 11b is charged. Is done.

Next, as shown in FIGS. 7, 8, and 18, a contact wall portion 21 is provided at the front portion of the wheelchair 10 so as to straddle between the front end portions of the left and right side frames 20 </ b> L and 20 </ b> R. A pair of left and right buffer blocks 23, 23 are attached to the inner surface (rear surface) of the contact wall portion 21. As shown in FIG. 18, the rear surfaces (contact surfaces) of both the buffer blocks 23, 23 are inclined in the direction in which the protruding dimension from the contact wall portion 21 decreases toward the upper side.
On the other hand, a pair of left and right contact protrusions 157 and 157 are attached to the front surface of the wheelchair connection base 151 corresponding to the buffer blocks 23 and 23. Elastic rubber is used for the both contact protrusions 157 and 157.
FIG. 8 shows a state where the wheelchair 10 used as a wheelchair outside the vehicle compartment is returned to the vehicle compartment and the wheelchair 10 is moved backward to approach the wheelchair connection base 151. By further retreating the wheelchair 10 from this approaching state, the wheelchair connection base 151 can be relatively advanced under the seat frame 20.
When the wheelchair connection base 151 is relatively moved downwardly of the seat frame 20 due to the backward movement of the wheelchair 10, both contact protrusions 157 and 157 come into contact with the buffer block 23, whereby the wheelchair connection base 151 of the wheelchair 10 is contacted. Is temporarily positioned in the front-rear direction of the seat. The wheelchair 10 is connected to the wheelchair connection base 151 by raising the wheelchair connection base 151 from this temporary positioning state.
A pair of left and right footrests 27 and 27 for a seated person to put his / her foot on are provided on the outer surface of the abutting wall portion 21.

According to the embodiment configured as described above, the wheelchair 10 is moved from the vehicle interior to the vehicle interior and separated from the moving device 100 as described below, and conversely, the wheelchair 10 used as a normal wheelchair outside the vehicle interior is provided. It is connected to the moving device 100 and stored in the passenger compartment.
First, in a state in which the seat cushion 11 (and thus a seated person) is positioned facing the front of the vehicle in the vehicle interior (a state when the vehicle is running, etc.), the wheelchair connection base 151 and thus the seat cushion 11 are moved to the lift base 135 in the third slide mechanism 130. The front main engagement portion 137 of the elevating base 135 is engaged with the front end of the intermediate base 131 and the arm engagement portions of the front connecting members 210 and 210 of the wheelchair 10 because the front main engagement portion 137 is engaged with the front end of the intermediate base 131. 210b and 210b are engaged with the front side engaging portion 201 of the outer link arm 133b. Thereby, for example, even when a large impact load is applied to the seat cushion 11 at the time of rear-end collision of the vehicle, the lift of the wheelchair 10 from the moving device 100 particularly in the front portion is restricted, and thus the seat cushion 11 and thus the seating are restricted. Displacement in the backward tilt direction of the person is reliably prevented.
Further, in this state, the rear engagement portion 200 provided on the rotation base end side of the outer link arm 133b enters the sliders 60, 60 of the wheelchair 10, respectively, and the second engagement portion 212 of the wheelchair 10 enters the connection recess 212. The connection convex part 213 provided in the 2 slide base 132 has entered. Thereby, for example, even when a large impact load (so-called seat belt load) is applied to the seat cushion 11 at the time of a frontal collision of the vehicle, the lifting of the wheelchair 10 from the moving device 100 particularly at the rear is restricted, thereby The displacement (lifting) in the forward direction of the seat cushion 11 and thus the seated person is reliably regulated.

On the other hand, in the normal state where the impact load is not applied, the front main engagement portion 137 is engaged with the front end of the intermediate base 131, the arm engagement portion 210b of the front connection member 210, the front engagement portion 201, and the like. , The state in which the rear engagement portion 200 has entered the slider 60, and the state in which the connection projection 213 has entered the connection recess 212, the vehicle width of the wheelchair connection base 151 and thus the seat cushion 11 (wheelchair 10), respectively. Movement outward in the direction (moving forward as viewed from the seated person) is permitted. For this reason, during normal use, the seated person or the caregiver can perform the moving operation of the vehicle seat 1 without performing any special unlocking operation. In particular, the rear engagement portion 200 that has entered the slider 60 does not engage with the slider 60 in a normal state. On the other hand, when an impact load is applied to the seat cushion 11 and the rear portion of the seat cushion 11 starts to be slightly displaced in the lifting direction, the engaging claw 200a of the rear side engaging portion 200 starts at this stage for the slider 60. The displacement of the seat cushion 11 is regulated by being engaged with the engagement hole 61, and as a result, the displacement of the seat cushion 11 in an inappropriate direction is reliably regulated.
In a state where the seat cushion 11 is positioned in front of the vehicle, the first slide motor 114a of the first slide mechanism 110 and the rotation motor 123 of the rotation mechanism 120 are activated, and the door opening portion is moved while the seat cushion 11 moves forward of the vehicle. It is rotated to the K side. FIG. 19 shows a state in which the seat cushion 11 is directed to the door opening K side.

Next, the third slide motor 152 of the third slide mechanism 140 is activated, and the wheelchair connection base 151 slides to the outside of the vehicle compartment, thereby moving the seat cushion 11 horizontally to the outside of the vehicle compartment. This state is shown in FIG.
Next, the second slide motor 171 of the second slide mechanism 130 is activated, and the second slide base 132 moves to the outside of the passenger compartment. As a result, the left and right four-bar linkage mechanisms 133 and 133 move toward the passenger compartment side. At this time, the guide roller 134 attached to the inner link arm 133a rolls on the horizontal guide surface 139a of the guide cam 139, so that both the four-bar linkage mechanisms 133, 133 move downward while moving to the outside of the passenger compartment (see FIG. Thus, the lift base 135 and the wheelchair 10 are moved out of the passenger compartment and lowered to a position lower than the passenger compartment. FIG. 21 shows this state. 19 to 21, the front and rear wheels 30 and 40 and the wheel storage mechanism 50 in the wheelchair 10 are omitted.
At this stage, on the wheelchair 10 side, the wheel storage mechanism 50 is activated to take out the front and rear wheels 30, 30, 40, 40 to the lower use position. When the wheels 30, 30, 40, 40 are taken out to the use position, the wheel retracting detection switches 4, 5 are turned on, whereby the power supply circuits C1, C2 of the main operation panel 2 and the auxiliary operation panel 3 are turned on. The operation of the operation panels 2 and 3 becomes effective.
After that, the wheelchair 10 is lowered by moving the second slide base 132 further outside the passenger compartment and further lowering the elevating base 135, thereby grounding the front and rear wheels 30, 30, 40, 40. When the elevating base 132 is further lowered, the wheelchair connection base 151 is detached downward from the seat frame 20 of the wheelchair 10, whereby the wheelchair 10 can be separated from the moving device 100.

By separating the wheelchair 10 from the moving device 100, the wheelchair 10 can be used as a wheelchair. By operating the main operation panel 2 or the auxiliary operation panel 3, the rear wheels 40 and 40 are driven to drive the wheelchair 10. Can be self-propelled. When used as a wheelchair, the brake device 70 can be operated by tilting the brake lever 73 forward while a seated person is sitting. When the brake lever 73 is tilted forward, the brake wires 78 and 78 are pulled and the operation levers 74 and 74 are rotated, whereby the brake levers 76 and 76 are rotated and pressed against the rear wheel 40, respectively. A braking force can be applied to the wheels 40 (applying a brake). This rear wheel braking state is maintained by the brake lever 73 being locked to the braking side by a so-called turnover mechanism. When the seated person returns the brake lever 73 to the front, the brake wires 78 and 78 are loosened, and the operating levers 74 and 74 and the brake levers 76 and 76 are returned to the non-brake side by the biasing force of the respective torsion springs. 40 and 40 are in a rotatable state. Thereby, the wheelchair 10 (wheelchair) can be moved.
In addition, handle portions 22 and 22 are provided on the upper back portion of the seat back 11b for holding when the caregiver moves the wheelchair 10. Each of the handle portions 22 and 22 is equipped with a brake lever 22a connected to the operation lever 74 via a brake wire 79. The caregiver can also operate the brake levers 22a and 22a to rotate the operating levers 74 and 74 to the braking side and press the braking levers 76 and 76 against the rear wheels 40 and 40. The brakes can be applied to the rear wheels 40, 40.

When the wheelchair 10 used as the wheelchair is returned to the passenger compartment, the wheelchair 10 is moved backward to approach the wheelchair connection base 151 of the moving device 100. In this case, the wheelchair connection base 151 is previously moved to the lowest position outside the passenger compartment. When the wheelchair 10 moves backward and approaches, the wheelchair connection base 151 can enter under the seat frame 20. When the wheelchair connection base 151 enters almost directly below the seat frame 20, the contact protrusions 157 and 157 on the wheelchair connection base 151 come into contact with the buffer blocks 23 and 23 on the wheelchair 10 side. In this temporary positioning state, the wheelchair connection base 151 is slightly raised by retracting the second slide base 132 on the moving device 100 side. Thereby, the wheelchair connection base 151 gradually approaches (rises) the seat frame 20 of the wheelchair 10.
In this ascending stage, the front ends (wheelchair connection base 151) of both the four-bar linkage mechanisms 133, 133 are displaced along an arc-shaped locus, so that the wheelchair connection base 151 is slightly horizontal with respect to the wheelchair 10. The wheelchair connection base 151 approaches the seat frame 20 with displacement (relatively moving forward).
In this respect, since the rear surfaces of the buffer blocks 23 and 23 on the wheelchair 10 side are inclined in the direction in which the protruding size decreases toward the upper side, the contact state of the contact protrusions 157 and 157 with respect to the buffer blocks 23 and 23 (temporary) The horizontal displacement of the wheelchair connection base 151 with respect to the wheelchair 10 is allowed smoothly.
In addition, since the engagement grooves 210a and 210a of the front connection members 210 and 210 on the wheelchair 10 side are formed along a circular path, the connection lock bars 155 and 155 can be smoothly inserted into the engagement grooves 210a and 210a. The wheelchair connection base 151 can be made to approach smoothly while allowing slight displacement in the horizontal direction with respect to the wheelchair 10.

Thus, when the wheelchair connection base 151 rises and approaches the seat frame 20, the connection lock bars 155 and 155 reach the back of the engagement groove 210 a, respectively, and the rear connection members 211 and 211 on the rear side of the seat frame. When the rear connection lock bars 156 and 156 on the wheelchair connection base 151 side are engaged, the wheelchair 10 is connected to the wheelchair connection base 151 in a state of being mainly positioned in the front-rear direction.
Moreover, when the wheelchair connection base 151 enters between the positioning walls 28 and 28 of the seat frame 20, the wheelchair 10 is positioned in the left-right direction as viewed from the seated person with respect to the wheelchair connection base 151.
Further, when the wheelchair 10 is connected to the wheelchair connection base 151, the male power connectors 25, 25 on the wheelchair 10 side are connected to the female power connectors 158, 158 on the wheelchair connection base 151 side. Is supplied with power.
After the connection of the wheelchair 10 to the wheelchair connection base 151 is completed, the second slide base 132 is further retracted to the vehicle interior side, so that both the four-bar linkage mechanisms 133 and 133 are returned to the vehicle interior side while being tilted upward. As a result, the wheelchair 10 starts to rise.
When the wheelchair 10 is raised to an appropriate height, the wheel storage mechanism 50 of the wheelchair 10 is activated and the sliders 60 and 60 are moved to the rear side (right side in FIG. 8) of the wheelchair 10. , 30, 40, 40 are stored upward.
When the left and right slide brackets 51, 51 move to the rear side of the wheelchair 10, the front wheel connecting arms 34, 34 and the rear wheel connecting arms 43, 43 are also displaced rearward. As the front wheel connecting arms 34, 34 move rearward, the front wheel stays 32, 32 rotate upward about the support shaft 31, respectively, so that the front wheels 30, 30 are stored in the retracted position. By moving the rear wheels 43 and 43 rearward, the rear wheel stays 42 and 42 rotate upward and rearward about the support shaft 41, respectively, and the rear wheels 40 and 40 are stored in the storage position. In FIG. 8, the stored front and rear wheels 30, 30, 40, 40 are indicated by two-dot chain lines.

When the front wheels 30 and 30 are stored upward as described above, the two wheel storage detection switches 4 and 5 are turned off by the detected members 37 and 38, respectively. When the wheel retracting detection switches 4 and 5 are turned off, the power supply circuit C1 of the main operation panel 2 and the power supply circuit C2 of the auxiliary operation panel 3 are both shut off as shown in FIGS. For this reason, the power switch 2b of the main operation panel 2 or the power switch 3a of the auxiliary operation panel 3 is forgotten to be turned off, and then the lever 2a of the main operation panel 2 is erroneously operated, or the advance switch of the auxiliary operation panel 3 Even if the 3b or the like is pushed by mistake, the rear wheels 40 and 40 do not rotate unnecessarily.
Moreover, since the wheel storage detection switches 4 and 5 have a function as a switch for stopping the drive motor 56 of the wheel storage mechanism 50, the wheels 30, 30, 40, and 40 are stored in the storage positions. Then, the drive motor 56 is automatically stopped.
In this way, the front wheels 30 and 30 and the rear wheels 40 and 40 are stored, and the wheelchair 10 reaches the ascending end while the main operation panel 2 and the auxiliary operation panel 3 are interlocked. FIG. 20 shows the state at this stage. At this stage, the second slide base 132 reaches the retracted end, and therefore, both the four-bar linkage mechanisms 133 and 133 reach the retracted end on the indoor side.
After the wheelchair 10 is returned to the ascending end, the third slide motor 152 of the third slide mechanism 140 is activated in the reverse direction, and the wheelchair connection base 151 slides toward the vehicle interior side with respect to the lift base 135, thereby The seat cushion 11 is returned horizontally to the vehicle interior side. When the wheelchair 10 is returned to the vehicle interior side by the third slide mechanism 140, the arm engaging portions 210b and 210b provided on the front connecting members 210 and 210 on the wheelchair 10 side are respectively connected to the front engaging portion 201 of the outer link arm 133b. And the rear engaging portions 200 and 200 enter from the rear portions of the sliders 60 and 60, respectively. At this stage, as shown in FIG. 18, the state in which the engaging claws 200a of the rear engaging portions 200, 200 are engaged with the engaging holes 61, 61 provided in the slider 60 and the side frames 20L, 20R. Instead, the sliding operation by the third slide mechanism 140 is allowed. Further, when the seat body 10 is returned horizontally to the vehicle interior side by the third slide mechanism 140, the connecting convex portion 213 provided on the second slide base 132 enters the connecting concave portion 212 provided on the rear portion of the seat frame 20. It will be in the state.

Thus, when the wheelchair 10 is returned to the vehicle interior side by the third slide mechanism 140, the arm engaging portion 210b of the front side connecting member 210 is engaged with the front side engaging portion 201 of the outer link arm 133b, thereby Mainly, the displacement in the lifting direction on the front side is restricted. Further, when the wheelchair 10 is returned to the vehicle interior side by the third slide mechanism 140, the rear engagement portions 200, 200 enter from the rear portions of the sliders 60, 60. Displacement in the lifting direction is restricted. Thus, for example, when a large impact load (seat belt load) is applied to the seat cushion 11 at the time of a frontal collision of the vehicle, the displacement in the lifting direction from the seat cushion 11 and the seated person's moving device 100 is firmly regulated. .
As described above, after the wheelchair 10 is returned to the vehicle interior side, the rotation motor 123 reverses and the first slide motor 114a starts in the reverse rotation direction, so that the seat cushion 11 slides toward the vehicle rear side. However, the vehicle is rotated from the position facing the door opening K side to the vehicle front facing position. By returning the seat cushion 11 to the front of the vehicle and returning to the rear end position of the sliding range in the vehicle front-rear direction, the operation of returning the wheelchair 10 to the vehicle interior side is completed.
In the state where the wheelchair 10 is returned to the passenger compartment, the front and rear wheels 30, 30, 40, 40 are stored and the wheel storage detection switches 4, 5 are turned off. The power supply circuits C1 and C2 are cut off, so that the rear wheels 40 and 40 can be reliably prevented from rotating carelessly.

According to the wheelchair 10 of the present embodiment configured as described above, when the front and rear wheels 30, 30, 40, 40 are stored, the normally closed wheel storage detection switches 4, 5 are turned off, whereby the rear wheels 40, Since the power supply circuits C1 and C2 for driving and rotating the motor 40 are cut off, the rear wheels 40 and 40 are not prepared due to an erroneous operation of the main operation panel 2 or the auxiliary operation panel 3 in a state where the wheelchair 10 is installed in the vehicle interior. Rotation is reliably prevented.
Various modifications can be made to the embodiment described above. For example, the vehicle-mounted wheelchair 10 that is stored in the vehicle interior by the mobile device 100 installed in the vehicle M and can also be used as a seat for the vehicle interior has been illustrated, but a normal configuration that is used only outside the vehicle interior. It can also be applied to wheelchairs. That is, by storing the front and rear wheels 30, 30, 40, 40 for storage in a predetermined place other than the vehicle M, the power supply circuits C1, C2 for rotating the rear wheels 40, 40 are cut off. The drive wheels (rear wheels 40, 40) can be stored while reliably avoiding inadvertent rotation.
Further, the configuration in which the storage of the front wheels 30 and 30 is detected and the power supply circuits C1 and C2 are shut off has been exemplified. However, the storage of the rear wheels 40 and 40 or the movement of, for example, the slide bracket 51 and the connecting arms 34 and 43 is switched. It is good also as a structure which detects by this and detects the storing position of a wheel.
Furthermore, although the configuration using limit switches has been exemplified as the wheel storage detection switches 4 and 5, the switches (sensors) for detecting that the wheels have been stored are non-contact such as optical sensors and magnetic sensors. A type sensor or other sensing means can be used. For example, a switch (electromagnetic relay, transistor) incorporated in the power supply circuits C1 and C2 is detected based on the output signals of these sensors by detecting that the wheel has been stored in the storage position using a reflection type phototube switch or proximity switch. Etc.) to open the power supply circuits C1 and C2.
Moreover, it is good also as a structure which attaches the wheel storage detection switches 4 and 5 to the wheel stay side, and attaches the to-be-detected members 37 and 38 to the seat frame 20 side.
Moreover, although the configuration using the normally closed switches 4 and 5 has been illustrated, a normally open switch may be used. In this case, for example, the same effect as described above can be obtained by turning on the front wheel 30 when the front wheel 30 is taken out to the use position and closing the power supply circuit.
Furthermore, although the configuration in which the rear wheels 40, 40 are rotated by the wheel-in motor 45 built in the rear wheels 40, 40 has been exemplified, an electric motor is used as the driving wheel axle instead of the wheel-in motor 45, for example, a motive power comprising a gear train. It is good also as a structure which rotates a driving wheel positively by connecting via a transmission mechanism. Further, as illustrated, the present invention can be similarly applied when the front wheels 30, 30 or all the wheels 30, 30, 40, 40 are drive wheels instead of the rear wheels 40, 40.

1 is an overall perspective view of a wheelchair according to an embodiment of the present invention. It is a perspective view of a main operation panel. It is a front view of an auxiliary operation panel. It is a figure which shows the power supply circuit of a main operation panel. It is a figure which shows the power supply circuit of an auxiliary operating panel. It is a top view of vehicles, and is a figure showing the state where a wheelchair is moved out of a vehicle interior from a vehicle interior. It is the perspective view which looked at the wheelchair from the front left slant. In this figure, the seat cushion and the seat back are indicated by a two-dot chain line. It is a left view of a wheelchair. In this figure, the seat cushion and the seat back are indicated by a two-dot chain line. In addition, the stored front wheels and rear wheels are indicated by two-dot chain lines. It is a side view which shows the front-wheel vicinity of the left side of a wheelchair. It is a perspective view of the wheelchair connection base of a moving apparatus. It is a top view of a seat frame and a wheel storage mechanism. It is a longitudinal cross-sectional view of the left side frame part of a seat frame. It is a side view of the action | operation part of a brake device. It is the figure seen from the arrow (14) direction in FIG. 13, Comprising: It is a side view which shows the connection state of a brake wire. It is a side view of the lever part of a brake device. It is a left view of a wheelchair and a brake device. It is a top view which shows the state in which the wheelchair was connected with the wheelchair connection base. It is a side view which shows the state in which the wheelchair was connected with the wheelchair connection base. It is the rear view which looked at the wheelchair of the state turned to the door opening part side in the vehicle interior from the arrow (19) direction in FIG. It is the rear view which looked at the state which the wheelchair moved to the vehicle compartment outer side with the 3rd slide mechanism of the moving apparatus from the arrow (19) direction in FIG. It is the rear view which looked at the state which the wheelchair descend | falls, moving outside the passenger compartment by the 2nd slide mechanism of the moving apparatus from the arrow (19) direction in FIG. It is a (22)-(22) arrow directional view in FIG. 20, Comprising: It is a front view of a 2nd slide mechanism. It is a side view near the 2nd slide base of a moving device. It is a perspective view of a four-joint link mechanism and a guide cam on the left side as viewed from a seated person. It is a side view of a four-bar linkage mechanism and a guide cam. It is a side view of the 3rd slide mechanism of the wheelchair in the state connected with the moving apparatus, and a moving apparatus. It is the front view which looked at the 3rd slide mechanism from the arrow (27) direction in FIG.

Explanation of symbols

M ... Vehicle U ... Control unit C1 ... Main operation panel power circuit C2 ... Auxiliary operation panel power circuit 1 ... Vehicle seat 2 ... Main operation panel 3 ... Auxiliary operation panels 4, 5 ... Wheel retract detection switch 10 ... Wheelchair 11 ... Seat cushion 12 ... Seat back 13 ... Armrest 20 ... Seat frame 20L ... Left frame part, 20R ... Right frame part 22 ... Handle part, 22a ... Brake lever 30 ... Front wheel 32 ... Front wheel stays 37 and 38 ... Detected member 40 ... Rear wheel 42 ... rear wheel stay 45 ... wheel in motor 50 ... wheel storage mechanism 51 ... slide bracket 70 ... brake device 73 ... brake lever 100 ... moving device 110 ... first slide mechanism 120 ... rotating mechanism 130 ... second slide mechanism 132 ... second slide base 133 ... four-bar linkage mechanism 134 ... guide roller 135 ... elevating base 140 ... third slide Id mechanism 150 ... third driving device 151 ... Roll consolidated

Claims (5)

A self-propelled wheelchair provided with drive wheels that are rotated by an electric motor, is detachably connected to a moving device provided in the vehicle, and is moved between the interior and exterior of the vehicle interior by the operation of the moving device. An interlock mechanism that restricts activation of the electric motor when stored, and a wheel storage mechanism for storing or taking out the driving wheel, and is connected to the moving device from the outside of the vehicle compartment by the operation of the moving device. When the vehicle is moved into the passenger compartment, when the vehicle rises from the road surface and reaches a height that rises from the road surface by a certain dimension, the drive wheel is automatically stored by the wheel storage mechanism and moved from the passenger compartment to the outside of the passenger compartment. The wheelchair is configured such that when the vehicle is lowered to a position lower than the passenger compartment and reaches a certain height from the road surface, the drive wheel is automatically taken out by the wheel retracting function . 2. The wheelchair according to claim 1, further comprising an operation panel for rotating the driving wheel, and when the driving wheel is retracted, the power circuit of the electric motor is cut off and the operation of the operation panel becomes invalid. A wheelchair with an interlock mechanism. 3. The wheelchair according to claim 2, comprising a main operation panel mainly operated by a seated person and an auxiliary operation panel mainly operated by a caregiver as operation panels. The wheelchair according to claim 1, wherein when a normally closed switch is incorporated in a power circuit of an electric motor and a wheel is stored, the switch is operated by a wheel or a member that moves along with the storing of the wheel. A wheelchair configured to shut off the power circuit. The wheelchair according to claim 1, wherein the wheelchair is used as a seat in the passenger compartment.

Images