JP2005013497A - Vehicle seat device and height adjusting device of foot rest for wheelchair - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent a foot rest from being obstructive when a wheelchair seat mechanism is used as a seat in a vehicle cabin, and improve the usability of the foot rest when the wheelchair seat mechanism is used as a wheelchair. <P>SOLUTION: The vehicle seat mechanism comprises a seat moving mechanism provided in the vehicle and is constituted so that the wheelchair can be moved between the interior of the vehicle and the exterior of the vehicle by the seat moving mechanism in the state that it is connected to the seat moving mechanism. The vehicle seat mechanism is equipped with the wheelchair seat mechanism 10 which is used as the seat inside the vehicle and can be used as the wheelchair outside the vehicle by being separated from the seat moving mechanism, The wheelchair seat mechanism 10 has the foot rest 20 for placing user's feet when the wheelchair seat mechanism 10 is used as the wheelchair, and a height adjusting means 30 capable of adjusting the height of the foot rest 20 between the proper height for the wheel chair and the proper height which does not interfere with a floor face inside the vehicle. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention is a configuration in which a seat moving mechanism provided in a vehicle is moved between the outside of the passenger compartment and the passenger compartment by the seat moving mechanism while being connected to the seat moving mechanism. The present invention relates to a vehicle seat device including a wheelchair seat mechanism that can be used as a wheelchair by being separated from the seat moving mechanism outside the vehicle compartment and a height adjustment device for a wheelchair footrest.
[0002]
[Prior art]
A vehicle seat device related to this is described in Patent Document 1, and a schematic diagram showing a state in which the wheelchair seat mechanism of the vehicle seat device is used as a wheelchair is shown in FIG.
The wheelchair seat mechanism 80 is used as a seat in the passenger compartment and is connected to a seat moving mechanism (not shown) provided in the vehicle to move a seated person between the passenger compartment and the exterior of the passenger compartment in a sitting posture. It is configured to be able to. When the wheelchair seat mechanism 80 is used as a wheelchair, the wheelchair seat mechanism 80 is moved out of the passenger compartment by the seat moving mechanism, and the front wheels 83 and the rear wheels 85 that are folded under the seat frame 82 are supported. Expand 84k and 85k. Then, with the front wheel 83 and the rear wheel 85 grounded, the connection between the wheelchair seat mechanism 80 and the seat moving mechanism is released.
At the front end portion of the seat frame 82, a footrest 84 for mounting a foot by a seated person when used as a wheelchair is attached by a support member 85. The footrest 84 is positioned at a position lower than the seat frame 82, and the height position thereof does not change when the wheelchair seat mechanism 80 is used as a wheelchair outside the vehicle interior or as a seat inside the vehicle interior.
[0003]
[Patent Document 1]
JP 2002-119543 A
[0004]
[Problems to be solved by the invention]
In general, when the wheelchair seat mechanism 80 is used while being seated in a vehicle interior, it is preferable that the seat surface of the wheelchair seat mechanism 80 does not protrude above the seat surfaces of other seats. For this purpose, it is necessary to make the level of the seat frame 82 of the wheelchair seat mechanism 80 as low as possible. However, in the wheelchair seat mechanism 80, as described above, since the footrest 84 is positioned at a position lower than the seat frame 82, the level of the seat frame 82 is increased by the amount that the footrest protrudes downward. For this reason, it becomes difficult to lower the seat surface of the wheelchair seat mechanism 80 to the level of the seat surface of another seat.
If the footrest 84 is adjusted to the height position of the seat frame 82 in order to solve the above problem, when the wheelchair seat mechanism 80 is used as a wheelchair, the position of the footrest is too high and the usability deteriorates.
[0005]
The present invention has been made to solve the above-mentioned problems, and the problem to be solved by the present invention is to make it possible to adjust the height position of the footrest and to use the wheelchair seat mechanism as a seat in the vehicle interior. In this case, it is necessary to prevent the footrest from getting in the way and to improve the usability of the footrest when used as a wheelchair outside the passenger compartment.
[0006]
[Means for Solving the Problems]
The above-described problems are solved by the inventions of the claims.
According to a first aspect of the present invention, there is provided a seat moving mechanism provided in a vehicle, and a configuration in which the seat moving mechanism is connected to the seat moving mechanism and is moved between the outside of the passenger compartment and the passenger compartment by the seat moving mechanism. In a vehicle seat device comprising a wheelchair seat mechanism that is used as a seat and can be used as a wheelchair by being separated from the seat moving mechanism outside the passenger compartment, the wheelchair seat mechanism is configured as a wheelchair. A height that can be adjusted between an appropriate height for a wheelchair and an appropriate height that does not interfere with the floor in the passenger compartment. And adjusting means.
[0007]
According to the present invention, the height adjustment means can adjust the height of the footrest on which the seated person puts his / her foot between the appropriate height for the wheelchair and the appropriate height that does not interfere with the floor in the passenger compartment. For this reason, by holding the footrest at an appropriate height that does not interfere with the floor surface in the vehicle interior, the footrest does not get in the way when the wheelchair seat mechanism is used as a seat in the vehicle interior. Therefore, the seat surface of the wheelchair seat mechanism can be lowered to the level of the seat surface of another seat.
In addition, by maintaining the footrest at an appropriate height for a wheelchair, the ease of use of the footrest is improved when the wheelchair seat mechanism is used as a wheelchair.
[0008]
The invention of claim 2 is provided with a detecting means capable of detecting that the footrest is at an appropriate height position that does not interfere with the floor surface in the passenger compartment, and the wheelchair seat mechanism and the seat moving mechanism are connected. The seat moving mechanism can be driven on condition that the detecting means detects that the footrest is at an appropriate height position. For this reason, when the footrest is at an appropriate height for a wheelchair, that is, when the footrest protrudes below the wheelchair seat mechanism, there is a problem that the seat moving mechanism is erroneously driven. Does not occur.
According to the invention of claim 3, the height adjusting means is provided on each of the left and right sides of the seat frame, one end of which is pivotably connected to the seat frame in the vertical direction and the other end is pivotable on the footrest. When the footrest is at an appropriate height for a wheelchair or an appropriate height in a passenger compartment And a rotation restricting mechanism capable of restricting the link from rotating downward relative to the frame.
As described above, the height of the footrest can be easily adjusted because the footrest is translated in the substantially vertical direction by the left and right links. Furthermore, the height of the footrest can be adjusted with good balance without changing the inclination angle of the step surface of the footrest.
[0009]
The invention of claim 4 is a height adjustment device for a wheelchair footrest for adjusting the position of the footrest provided in the wheelchair in the vertical direction, and is provided on each of the left and right sides of the wheelchair, one end of the wheelchair A pair of links coupled to the frame so as to be pivotable in the vertical direction and having the other end pivotally coupled to the footrest, and supporting the footrest so as to be movable in a substantially vertical direction relative to the frame; And a rotation restricting mechanism capable of restricting the link from rotating downward with respect to the frame when the footrest is in a predetermined position.
Therefore, even in a general wheelchair, the height of the footrest can be easily adjusted, and the height of the footrest can be adjusted with good balance without changing the inclination angle of the step surface of the footrest.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, based on FIGS. 1-5, the vehicle seat apparatus which concerns on Embodiment 1 of this invention is demonstrated. Here, FIG. 1 to FIG. 3 are side views showing the operation of the footrest and height adjustment mechanism of the wheelchair seat mechanism of the vehicle seat device, and FIG. 4 is a perspective view of the footrest and height adjustment mechanism. is there. 5A and 5B are side views showing the whole wheelchair seat mechanism of the vehicle seat device and a part of the seat moving mechanism.
The vehicle seat device includes a wheelchair seat mechanism 10 and a seat moving mechanism 50 provided on the vehicle.
The wheelchair seat mechanism 10 is configured to be moved between the outside of the passenger compartment and the passenger compartment by the seat moving mechanism 50 while being connected to the seat moving mechanism 50, and is used as a seat in the passenger compartment. By being separated from the moving mechanism 50, it can be used as a wheelchair.
[0011]
As shown in FIGS. 5A and 5B, the wheelchair seat mechanism 10 includes a seat cushion 12, a seat back 14, and a seat frame 11 that supports them. A foldable wheel support mechanism 18 is mounted on the lower side of the seat frame 11, and a pair of left and right front wheels 16 and a pair of left and right rear wheels 17 are supported by the wheel support mechanism 18.
A pair of left and right footrests 20 and a height adjustment mechanism 30 for adjusting the height positions of the footrests 20 are provided at the front portion of the seat frame 11. The left and right footrests 20 are for a seated person to place their feet when the wheelchair seat mechanism 10 is used as a wheelchair.
[0012]
As shown in FIGS. 1 to 4, the height adjustment mechanism 30 includes an upper link 31 and a lower link 32 provided on both the left and right sides of the seat frame 11. The upper link 31 and the lower link 32 are strip plate-like links having a substantially inverted “h” shape, and the base end portions of the upper link 31 and the lower link 32 are connected to the seat frame 11 in a state of being vertically rotatable by rear connection pins 31p and 32p. ing.
The upper link 31 and the lower link 32 provided on the left side of the seat frame 11 are placed on their feet so that their front end portions can be turned up and down by front connection pins 31f and 32f as shown in FIG. The support plate 28 is connected to the left end surface 28h. Further, the upper link 31 and the lower link 32 provided on the right side of the seat frame 11 are also the right end surface of the footrest support plate 28 in a state in which the respective front end portions can be vertically rotated by the front connection pins 31f and 32f. 28e (see FIG. 4).
[0013]
As shown in FIG. 4, the footrest support plate 28 is a plate-like member that extends from the left front end portion to the right front end portion of the seat frame 11, and is erected by the left and right upper links 31 and lower links 32. Is held in. Pin support portions 28a and 28b are fixed to the front surface of the footrest support plate 28 at the lower left and lower right, and the base end portion of the footrest support pin 28p is connected to the upper link 31 at each of the pin support portions 28a and 28b. Are connected in a state in which they can be rotated up and down in the same direction. Here, upper and lower limit stoppers (not shown) are provided between the footrest support pins 28p and the respective pin support portions 28a and 28b. For this reason, by the action of the stopper, the footrest support pin 28p is substantially perpendicular to the front surface of the footrest support plate 28 (use position) and substantially parallel to the front surface of the footrest support plate 28 ( (Standby position) can be rotated about 90 °.
[0014]
The left support pin 28p is inserted through the end through hole 22 of the left footrest 20, and the right support pin 28p is inserted through the end through hole 22 of the right footrest 20. That is, the left and right footrests 20 are connected to the footrest support plate 28 so as to be rotatable about the respective support pins 28p. Here, upper and lower limit stoppers (not shown) are provided between the footrest 20 and the support pin 28p. For this reason, the footrest 20 can be rotated within a range of about 90 ° from a horizontal position (see FIG. 4) with the step surface 24s facing upward to a right angle position where the step surface 24s stands.
[0015]
The distal end portion of the operation lever 35 is connected to the left end surface 28h of the footrest support plate 28 by a connecting pin 35p so as to be rotatable up and down. Further, the distal end portion of the auxiliary lever 36 is connected to the right end surface 28e of the footrest support plate 28 in a state that the tip end portion of the auxiliary lever 36 can be turned up and down by a connecting pin (not shown). And the operation lever 35 and the auxiliary lever 36 are connected by the connection bar 37, as shown in FIG. For this reason, the auxiliary lever 36 can be rotated up and down (left and right) together with the operation lever 35 by rotating the operation lever 35 up and down (left and right).
The operation lever 35 is a lever for raising and lowering the footrest support plate 28 and the left and right footrests 20 in cooperation with the upper link 31 and the lower link 32, and a roller 39 (see FIG. 3), the footrest support plate 28 and the left and right footrests 20 are pulled up.
[0016]
That is, as shown in FIG. 3, the operation end 35h of the operation lever 35 is pushed down while the footrest support plate 28 and the left and right footrests 20 (hereinafter referred to as footrests 20 and the like) are in the lower predetermined positions ( By rotating it to the right, the footrest 20 and the like can be lifted with the roller 39 as a fulcrum. At this time, the footrest support plate 28 and the left and right footrests 20 can be translated in a substantially upward direction with respect to the seat frame 11 by the action of the left and right upper links 31 and the lower links 32.
[0017]
As shown in the partially cutaway view of FIG. 2, a lock lever 41 is rotatably connected to a connecting pin 35p that connects the operation lever 35 and the left end surface 28h of the footrest support plate 28. The lock lever (not shown) is also connected to a connecting pin (not shown) that connects the auxiliary lever 36 and the right end surface 28e of the footrest support plate 28 in a rotatable state. Since the lock lever 41 on the operation lever 35 side and the lock lever on the auxiliary lever 36 side have the same structure, the lock lever 41 on the operation lever 35 side will be described as a representative.
[0018]
The lock lever 41 is a lever for connecting the footrest 20 or the like to the seat frame 11 at an upper predetermined position or a lower predetermined position, and the base end portion of the lock lever 41 is connected to the connection pin 35p in a rotatable state. Has been. Further, a notch 41k is formed at the base end portion of the lock lever 41, and the protrusion 35x of the operation lever 35 can be engaged with the notch 41k from the left side. That is, when the operation lever 35 rotates left (upward) in FIG. 2 and the protrusion 35x presses the notch 41k of the lock lever 41, the lock lever 41 rotates together with the operation lever 35 in the drawing. Here, a coil spring (not shown) urged in a direction to rotate the lock lever 41 clockwise in the drawing is mounted around the connecting pin 35p. For this reason, the notch 41k of the lock lever 41 is normally in contact with the protrusion 35x of the operation lever 35.
[0019]
A hook 41f is formed at the tip of the lock lever 41, and the hook 41f is an upper pin 11u provided at a predetermined position on the upper part of the seat frame 11 in the process of turning the lock lever 41 to the right, or a lower part of the seat frame 11. The lower pin 11d provided at a predetermined position can be engaged from above.
For this reason, as described above, when the operation end 35h of the operation lever 35 is pushed down (turned to the right) and the footrest 20 is lifted with the roller 39 as a fulcrum, the footrest 20 and the like are shown in FIG. When the position is reached, the hook 41f of the lock lever 41 is engaged with the upper pin 11u of the seat frame 11 from above by the force of the coil spring.
[0020]
As described above, by rotating the operation lever 35 up and down (left and right), the auxiliary lever 36 also rotates up and down (left and right) together with the operation lever 35 by the action of the connecting bar 37. For this reason, when the hook 41f of the lock lever 41 on the operation lever 35 side is engaged with the upper pin 11u of the seat frame 11, the hook of the lock lever on the auxiliary lever 36 side is also connected to the upper pin (not shown) of the seat frame 11 from above. Engage. For this reason, the footrest 20 and the like are held at a predetermined upper position in a state of being balanced in the width direction by the left and right lock levers 41 and the upper pins 11u. The lock lever 41 on the operation lever 35 side is hereinafter referred to as the left lock lever 41, and the lock lever on the auxiliary lever 36 side is hereinafter referred to as the right lock lever 41.
Here, the upper predetermined position is a position where the level of the left and right footrests 20 is substantially equal to the lower part of the seat frame 11, and when the wheelchair seat mechanism 10 is used as a seat in the vehicle interior, the left and right footrests 20 It is set at a position that does not interfere with the floor of the passenger compartment.
As shown in FIG. 1 and the like, a limit switch 45 is attached to the seat frame 11 to detect that the footrest 20 or the like is at a predetermined position on the upper part. In addition, a seat-side connector 45m is attached to a predetermined position below the seat frame 11, and a limit switch 45 is electrically connected to the seat-side connector 45m. That is, the limit switch 45 corresponds to the detection means of the present invention.
[0021]
When the operation end 35h of the operation lever 35 is pulled up (turned to the left) in a state where the footrest 20 or the like is in the upper predetermined position shown in FIG. 1, the projection 35x of the operation lever 35 is notched 41k of the left lock lever 41. The lock lever 41 rotates together with the operation lever 35 in the left direction in the figure. Further, the right lock lever 41 also rotates to the left in the drawing together with the auxiliary lever 36. As a result, the hooks 41f of the left and right lock levers 41 are disengaged from the left and right upper pins 11u, respectively, and the left and right upper links 31 and the lower links 32 rotate leftward in the figure due to their own weight. The footrest 20 and the like translate downward with respect to the seat frame 11 by the functions of the left and right upper links 31 and lower links 32.
[0022]
Once the hooks 41f of the left and right lock levers 41 are released from the upper pin 11u, the footrest 20 and the like are lowered to the lower predetermined position by their own weight even if the hand is released from the operation end 35h of the operation lever 35. The hooks 41f of the left and right lock levers 41 are engaged with the lower pins 11d of the seat frame 11 by the force of the coil springs at the lower predetermined position. Thereby, the footrest 20 and the like are held at a predetermined position in the lower part. Here, the lower predetermined position is a position where the level of the left and right footrests 20 is substantially equal to the center level of the wheel 16 of the wheelchair seat mechanism 10 used as a wheelchair, and is a position suitable for a seated person to place his / her feet on. Is set to
That is, the lock lever 41, the coil spring, the upper pin 11u, and the lower pin 11d correspond to the rotation restricting mechanism of the present invention, and the height adjusting mechanism 30 including the upper link 31, the lower link 32, the operation lever 35, the roller 39, and the like. Corresponds to the height adjusting means of the present invention.
[0023]
The seat moving mechanism 50 is a device that moves the wheelchair seat mechanism 10 between the outside of the passenger compartment and the passenger compartment while being connected to the wheelchair seat mechanism 10 described above. The seat moving mechanism 50 is connected to the wheelchair seat mechanism 10 so that it can be driven by receiving a signal indicating that the limit switch 45 of the wheelchair seat mechanism 10 is ON, that is, a signal indicating that the footrest 20 is at a predetermined position in the upper part. It is configured.
The seat moving mechanism 50 includes a front-rear moving mechanism (not shown) that moves the wheelchair seat mechanism 10 in the vehicle front-rear direction in the passenger compartment, and a position facing the front of the vehicle when viewed from the seated person and the door opening side. A rotation mechanism (not shown) that rotates about 90 ° between the facing position and a vehicle width direction moving mechanism 52 that moves the wheelchair seat mechanism 10 facing the door opening by the rotation mechanism to the outside of the passenger compartment. Yes. 5A and 5B partially show the vehicle width direction moving mechanism 52 of the seat moving mechanism 50. FIG.
[0024]
The vehicle width direction moving mechanism 52 includes a slide mechanism (not shown), a pair of left and right four-joint link mechanisms 54, and a holder 56 attached to the tip of the four-joint link mechanism 54. The holder 56 is framed in a rectangular shape and configured to support the wheelchair seat mechanism 10 from below as shown in FIG. The slide mechanism and the four-joint link mechanism 54 are configured so that the holder 56 can be lowered while being moved forward or raised while being moved backward while the holder 56 is held horizontally.
When the holder 56 is connected to the wheelchair seat mechanism 10, a holder side connector 45 w that is automatically connected to the seat side connector 45 m of the wheelchair seat mechanism 10 is attached to the holder 56 at a predetermined position. And the wiring from the control apparatus (illustration omitted) of the sheet | seat moving mechanism 50 is electrically connected to the holder side connector 45w.
[0025]
Next, a procedure for using the wheelchair seat mechanism 10 in the passenger compartment as a wheelchair outside the passenger compartment will be described.
When the wheelchair seat mechanism 10 is in the passenger compartment, the footrest 20 and the like are held at a predetermined position on the upper portion so that the footrest 20 does not interfere with the floor surface (not shown) of the passenger compartment. In this state, first, the front / rear moving mechanism, the rotating mechanism, and the vehicle width direction moving mechanism 52 of the seat moving mechanism 50 are driven to move the wheelchair seat mechanism 10 to a predetermined position outside the passenger compartment. Next, the wheel support mechanism 18 of the wheelchair seat mechanism 10 is deployed by the power of the motor, and the pair of left and right front wheels 16 and the pair of left and right rear wheels 17 are projected downward from the lower side of the seat frame 11. In this state, the holder 56 of the seat moving mechanism 50 is lowered until the front wheel 16 and the rear wheel 17 of the wheelchair seat mechanism 10 come in contact with each other, and the holder 56 is further lowered from this position to the connection reference position. Thereby, the connection between the wheelchair seat mechanism 10 and the holder 56 is released.
[0026]
Next, the operation end 35h of the operation lever 35 is pulled up (turned to the left), the hook 41f of the left and right lock levers 41 is removed from the left and right upper pins 11u, and then the hand is released from the operation end 35h of the operation lever 35. As a result, the left and right upper links 31 and the lower links 32 rotate to the left in FIG. Translate. When the footrest 20 or the like is lowered to the lower predetermined position as shown in FIG. 3, the hooks 41f of the left and right lock levers 41 are engaged with the lower pins 11d of the seat frame 11 by the force of the coil springs. Thereby, the footrest 20 and the like are held at a predetermined position in the lower part.
In this state, as shown in FIG. 5A, the wheelchair seat mechanism 10 can be freely used as a wheelchair.
[0027]
Next, a procedure for accommodating the wheelchair seat mechanism 10 used as a wheelchair outside the passenger compartment in the passenger compartment will be described.
First, after positioning (height adjustment) between the wheelchair seat mechanism 10 and the holder 56 of the seat moving mechanism 50, the holder 56 is lowered to the connection reference position. Next, by retracting the wheelchair seat mechanism 10, the holder 56 enters the lower side of the wheelchair seat mechanism 10. In this state, by raising the holder 56, the wheelchair seat mechanism 10 is coupled to the holder 56, and the seat-side connector 45m of the wheelchair seat mechanism 10 and the holder-side connector 45w of the holder 56 are automatically connected. .
Further, as shown in FIG. 3, with the footrest 20 or the like being in a predetermined position at the lower portion, the operation end 35h of the operation lever 35 is pushed down (turned to the right), and the footrest 20 or the like is placed with the roller 39 as a fulcrum. Pull up. As described above, since the hooks 41f of the left and right lock levers 41 are hung from above on the left and right lower pins 11d of the seat frame 11, the hooks 41f and the hooks 41f are lifted by pulling up the tip of the operation lever 35 and the auxiliary lever 36. The engagement with the lower pin 11d is automatically released.
[0028]
When the operation end 35 h of the operation lever 35 is pushed down, the left and right upper links 31 and the lower links 32 rotate rightward in FIG. 3, and the footrest 20 and the like are actuated by the left and right upper links 31 and lower links 32. Is moved substantially upward. When the footrest 20 or the like is pulled up to a predetermined upper position shown in FIG. 1, the hooks 41f of the left and right lock levers 41 are hooked on the left and right upper pins 11u of the seat frame 11 from above by the force of the coil springs. As a result, the footrest 20 and the like are held at the upper predetermined position, and the limit switch 45 is turned on to detect that the footrest 20 and the like are at the upper predetermined position. When the limit switch 45 is turned on in this way, the ON signal is input to the control device (not shown) of the seat moving mechanism 50, and the seat moving mechanism 50 can be driven in a direction to store the wheelchair seat mechanism 10 in the vehicle interior. It becomes.
[0029]
Next, the wheelchair seat mechanism 10 is raised by the holder 56 of the seat moving mechanism 50. Then, with the front wheel 16 and the rear wheel 17 of the wheelchair seat mechanism 10 separated from the ground, the wheel support mechanism 18 is folded by the power of the motor, and the front wheel 16 and the rear wheel 17 are stored below the seat frame 11. (See FIG. 5B). Next, the vehicle width direction moving mechanism 52, the rotating mechanism, and the forward / backward moving mechanism of the seat moving mechanism 50 are operated to pull the wheelchair seat mechanism 10 into the vehicle interior and move it to a predetermined position (see the two-dot chain line in FIG. 5B). ). In this state, the wheelchair seat mechanism 10 can be used as a seat in the passenger compartment. Here, in the passenger compartment, the footrest 20 is folded up to a position where the step surface 24 s of the footrest 20 faces the front surface of the footrest support plate 28. Note that the symbol F in FIG. 5B represents the floor surface in the passenger compartment.
[0030]
Thus, according to the vehicle seat device according to the present embodiment, the height adjustment mechanism 30 causes the height of the footrest 20 to be between the appropriate height for the wheelchair and the appropriate height that does not interfere with the floor F in the vehicle interior. Can be adjusted. For this reason, by holding the footrest 20 at an appropriate height that does not interfere with the floor F in the vehicle interior, the footrest 20 does not get in the way when the wheelchair seat mechanism 10 is used as a seat in the vehicle interior. Therefore, the seat surface of the wheelchair seat mechanism 10 can be lowered to the level of the seat surface of another seat. Further, by holding the footrest 20 at an appropriate height for a wheelchair, the usability of the footrest 20 is improved when the wheelchair seat mechanism 10 is used as a wheelchair.
[0031]
Further, when the wheelchair seat mechanism 10 and the seat moving mechanism 50 are connected, the seat moving mechanism 50 can be driven while the limit switch 45 detects the appropriate height position of the footrest 20. For this reason, there is no problem that the seat moving mechanism 50 is erroneously driven when the footrest 20 is at the lower predetermined position, that is, at an appropriate height for a wheelchair.
Further, since the footrest 20 is translated in the substantially vertical direction by the left and right links 31, 32, the height of the footrest 20 can be easily adjusted. Furthermore, the height of the footrest 20 can be adjusted with good balance without changing the inclination angle of the step surface 24s of the footrest 20.
[0032]
In addition, this invention is not limited to the said embodiment, The change in the range which does not deviate from the summary of this invention is possible. For example, although the wheelchair seat mechanism 10 in the vehicle seat device has been described in the present embodiment, the present invention can be applied to a general wheelchair.
In the present embodiment, the manual height adjustment mechanism 30 using the upper link 31, the lower link 32, the operation lever 35, and the like is illustrated, but the upper link 31 and the lower link 32 may be driven by a motor or the like. Is possible.
[0033]
【The invention's effect】
According to the present invention, when the wheelchair seat mechanism is used as a seat in the passenger compartment, the footrest does not get in the way. Further, when the wheelchair seat mechanism is used as a wheelchair, the ease of use of the footrest is improved.
[Brief description of the drawings]
FIG. 1 is a side view illustrating an operation of a footrest and a height adjusting mechanism of a wheelchair seat mechanism of a vehicle seat device according to a first embodiment of the present invention.
FIG. 2 is a side view showing a rotation restricting mechanism.
FIG. 3 is a side view showing the operation of the footrest and height adjustment mechanism.
FIG. 4 is a perspective view of a footrest and height adjustment mechanism.
FIGS. 5A and 5B are side views (A and B) illustrating a wheelchair seat device and a seat moving mechanism. FIGS.
FIG. 6 is a side view showing a conventional wheelchair seat device.
[Explanation of symbols]
10 Wheelchair seat mechanism
11 Seat frame
11u upper pin (rotation restriction mechanism)
11d Lower pin (rotation restriction mechanism)
20 feet
30 Height adjustment mechanism (height adjustment means)
31 Upper link (height adjustment means)
32 Lower link (height adjustment means)
35 Control lever (height adjustment means)
36 Auxiliary lever (height adjustment means)
41 Lock lever (rotation restriction mechanism)
45 Limit switch (detection means)
50 Sheet moving mechanism

Claims (4)

A seat moving mechanism provided in a vehicle, and a structure that is connected to the seat moving mechanism and is moved between the outside of the passenger compartment and the passenger compartment by the seat moving mechanism. A vehicle seat device comprising a wheelchair seat mechanism that can be used as a wheelchair by being separated from the seat moving mechanism outdoors,
The wheelchair seat mechanism is
When the wheelchair seat mechanism is used as a wheelchair,
A height adjusting means capable of adjusting the height of the footrest between an appropriate height for a wheelchair and an appropriate height that does not interfere with the floor surface in the passenger compartment;
A vehicle seat device comprising: The vehicle seat device according to claim 1,
It is equipped with detection means that can detect that the footrest is at an appropriate height position that does not interfere with the floor surface in the passenger compartment,
In a state where the wheelchair seat mechanism and the seat moving mechanism are connected, the seat moving mechanism can be driven on condition that the detecting means detects that the footrest is at an appropriate height position. A vehicle seat device. A vehicle seat device according to claim 1 or 2, wherein
The height adjustment means
Provided on both the left and right sides of the seat frame, one end is pivotably connected to the seat frame and the other end is pivotally connected to a footrest, and the footrest is connected to the seat frame. A pair of links that are supported so as to be movable in a substantially vertical direction;
A rotation restricting mechanism capable of restricting the link from rotating downward with respect to the frame when the footrest is at an appropriate height for a wheelchair or an appropriate height in a vehicle interior;
A vehicle seat device comprising: A height adjustment device for a wheelchair footrest for adjusting the position of the footrest provided in the wheelchair in the vertical direction,
The wheelchair is provided on each of the left and right sides of the wheelchair, and one end of the wheelchair is pivotably connected to the wheelchair frame in the vertical direction, and the other end is pivotally coupled to the footrest. A pair of links that are supported in a vertically movable manner;
A rotation restricting mechanism capable of restricting the link from rotating downward with respect to the frame when the footrest is in a predetermined position;
An apparatus for adjusting the height of a footrest for a wheelchair, comprising:

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