JP4067841B2 - Wheelchair lifting and fixing system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention is a wheelchair. Elevating Fixed system About. More specifically, the wheelchair, especially the type of wheelchair that the caregiver pushes, can be used to assist in getting on and off the rear space of the car, and the wheelchair that gets in the car can be fixed. The Wheelchair fixing device that doubles as a boarding / alighting assist device Wheelchair lifting and fixing system comprising (front fixing device) and rear fixing device for fixing the rear part of the wheelchair About.
[0002]
[Prior art]
As such a wheelchair fixing device that also serves as a boarding / alighting assistance, there is, for example, a device described in JP-A-11-113963. FIG. 10 shows a characteristic portion of this apparatus. A winch unit 51 fixed to the left and right central portions of the floor plate of the automobile, a winding belt 52 wound by the winch unit, and a central portion of the winder unit 51 are wound. And a connecting rod 53 that is fixed to the end of the take-up belt 52. On both sides of the connecting rod 53, connecting belts 54, 54 are provided, and hooked hooks 55 are connected to the tips of the belts 54, 54, respectively. This device hooks hooks 55 on front legs 56, 56 of the front frame of the wheelchair, drives the winch unit 51 and winds the belt 52, thereby pulling the wheelchair into the vehicle and assisting the ride. Can do.
[0003]
In that case, since the interval between the connecting belts 54 and 54 on both sides is set by the connecting rod 53, the left and right front legs 56 and 56 of the wheelchair can be pulled in parallel as they are and the wheelchair can be put in the vehicle. Therefore, there is an advantage that the force to move the front legs 56, 56 toward the center side is not applied, and the force in the direction of folding is not applied even in a folding wheelchair. When the wheelchair is pulled toward the winch unit 51, the connecting rod 53 is hooked on the fixing brackets 57 disposed on both sides of the winch unit 51 to fix the connecting rod 53 so as not to tilt. Thus, the wheelchair can be fixed by the hook 55 hooked on the front legs 56 and 56 and the connecting belt 54. The rear part of the wheelchair is pulled by hooking the rear leg of the frame with a hook (not shown), so that the entire wheelchair can be fixed on the floor of the automobile with a force in the front-rear direction.
[0004]
[Problems to be solved by the invention]
By the way, while the automobile is running, shaking occurs in the front-rear direction and the left-right direction. However, as described above, the take-up belt 52 and the connecting belts 54, 54 extend in a substantially straight state along the front-rear direction of the automobile, so that the wheelchair is moved in the left-right direction as shown by the arrows in FIG. There is a problem of being easily shaken (weak to lateral load). In particular, there is a problem that a person who is in a wheelchair is very uneasy when shaking occurs in the left-right direction.
[0005]
The present invention has been made in view of the problems of the above-described conventional device, and can prevent the shaking in the left-right direction as well as the front-rear direction and can securely fix the wheelchair. Car Chair Elevating Fixed system The technical challenge is to provide Furthermore, the present invention allows the caregiver to concentrate on the operation of the wheelchair. Car Chair Elevating Fixed system It is the second problem to provide the above.
[0006]
[Means for Solving the Problems]
The present invention Car Chair Elevating Fixed system (Claim 1) is a winder provided in the vehicle, and is connected to the winder so as to be capable of being wound and fed out, and is connected to each free end. For engaging near the front left and right of the wheelchair A pair of left and right traction members provided with hooks, and a direction changing member that changes the direction of the traction member so that the direction of the traction member is bilaterally symmetrical and oblique with respect to the vehicle body in a state where the traction member is wound on the winder. Preparation The front fixing device also serving as a boarding / alighting assist device, and a rear fixing device for fixing the rear side of the wheelchair provided with a hook that is engaged in the vicinity of the left and right sides of the rear side of the wheelchair. The two traction members disposed in the center of the traction member are wound up at one place, and the direction changing members are respectively engaged with the middle of the traction member to change the direction of the progression, and When the wheelchair is in a position far from the winder, the two traction members extend almost in parallel when the wheelchair approaches the winder. In a state where the two traction members gradually tilt with respect to the wheelchair, and the wheelchair is fixed, the two traction members tilt at a steep angle and pull the wheelchair symmetrically outward. It is characterized by that.
[0009]
like this wheelchair Elevating Fixed system In The forward fixing device is Left and right slack sensors that detect slack of the pulling member, and a control device that stops the drive motor of the winder when one slack sensor detects slack. Is preferred (Claim 2) . In that case, the control device further includes an overcurrent detection unit that detects an overcurrent of the drive motor of the winder, and a circuit that stops the motor when the overcurrent detection unit detects the overcurrent. Is preferred (claims) 3 ).
[0010]
[Operation and effect of the invention]
Wheelchair of the present invention Elevating Fixed system (Claim 1) Forward fixing device By winding the traction member with the winder, the wheelchair with the hook at the tip is pulled to the inside of the vehicle. As a result, when the wheelchair is guided onto the slope, the wheelchair Up Travel slowly and be pulled up to the inside of the car. Next, the wheelchair is fixed with the rear fixing device. As a result, the caregiver operating from behind the wheelchair needs less force to push up the wheelchair. Also, Remove the rear fixing device and remove the front fixing device. When the pulling member being wound up by the winder is sent out, the wheelchair on the slope gradually descends by its own weight. Even in such a case, the caregiver who operates the wheelchair needs less force to push and hold the weight of the wheelchair from below, and can safely assist getting on and off the wheelchair.
[0011]
Further, in a state where the wheelchair is fixed on the vehicle, the wheelchair is pulled in an oblique direction symmetrically by the left and right traction members. The pulling force in the diagonal direction at that time can be divided into a front-rear direction component and a left-right direction component. Rear fixing device At the same time, restrain the movement of the wheelchair back and forth. And the component of the left-right direction restrains the right-and-left movement of a wheelchair. Therefore, the wheelchair can be reliably fixed against the shaking in the left-right direction as well as the shaking in the front-rear direction. This does not give a sense of anxiety to the person in the wheelchair.
[0012]
Furthermore, the above-mentioned direction change member is arrange | positioned by left-right pair with the space | interval larger than the width | variety of a wheelchair. Because When the wheelchair is at a position far from the winder, the two traction members are almost parallel. Therefore, the wheelchair can be pulled straight. When the wheelchair is loaded into the car and approaches the winder, the two towing members gradually tilt with respect to the wheelchair at a steep angle. Pull symmetrically in the direction. Therefore, in the fixed state, the lateral restraint force of the wheelchair becomes particularly large, and the wheelchair can be stably fixed against left and right shaking. In either state, since the left and right traction members pull the wheelchair outward, no force in the folding direction is applied even in a folding wheelchair.
[0015]
The front fixing device includes left and right slack sensors that detect slack of the pulling member, and a control device that stops the drive motor of the winder when one slack sensor detects slack. (Claims 2 ), When the actual lifting operation is not performed and the traction member is loosened, the slack sensor detects the state and stops the operation of the winder. Therefore, when the wheelchair is put on the car, the caregiver simply retracts the wheelchair and applies tension to the traction member, so that the winding operation of the winder starts. Also, when the wheelchair is lowered from the automobile, the hook is engaged with the wheelchair with the traction member loosened, and when the wheelchair is retracted somewhat, the winder starts to feed the traction member. When the wheelchair gets down to the ground and the traction member loosens, the winder automatically stops. In this way, the caregiver can naturally start and stop the winding and feeding by simply pushing or retreating the wheelchair. Therefore, the caregiver does not have to operate the push button of the remote control device while holding the wheelchair handle with both hands.
[0016]
When the caregiver stops the wheelchair while the slope is descending, or when the caregiver stops with an obstacle or the like, the traction member loosens and the winder stops. Therefore, the traction member is not sent any further, and the wheelchair is secured so as not to roll off the slope. In either case of ascending and descending, when the wheelchair starts to run obliquely, one of the traction members is loosened, and the winder immediately stops. Therefore, it is safe.
[0017]
When the control device includes an overcurrent detection unit and a circuit that stops the motor when an overcurrent is detected (claim) 3 ) After the wheelchair is lifted, when the wheelchair hits the stopper, an overcurrent flows through the motor and the winder automatically stops. Therefore, the caregiver can concentrate on operations such as maintaining the posture of the wheelchair.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 shows the present invention. Car 2 is a plan view showing an embodiment of the entire chair lifting and fixing system, FIG. 2 is a sectional elevation of the wheelchair lifting and fixing system, and FIG. 3 is shown in FIG. Forward 4 is a plan view showing a state in which the wheelchair of the wheelchair lifting and fixing system shown in FIG. 1 is fixed, FIG. 5 is a plan view showing an embodiment of a remote control device according to the present invention, and FIG. of Forward FIG. 7 is a block diagram showing an embodiment of the electrical system of the fixing device. Is Wheelchair of the present invention Forward in the lifting and fixing system The top view which shows other embodiment of a fixing device, FIG. 8 is a plan view showing an example of a front fixing device outside the scope of the present invention, 9a and 9b show the present invention. Out of range Still other of fixing devices Example FIG. 9c is a plan view and a side view showing the Out of range Other of coupling Example FIG.
[0019]
Wheelchair lift shown in Figs. 1 and 2 Fixed The system is used to put a wheelchair 1 as shown in FIG. The wheelchair 1 includes a frame 2 made of a pipe or the like, a front wheel 3 provided on the front leg 5 side of the frame 2, and a large rear wheel 4 provided on the rear leg 6 side of the frame 2. The foam 2 is provided with a seat for a caregiver to sit on, a handle for the caregiver to perform operations such as pushing and lifting the front wheels.
[0020]
The wheelchair lifting / fixing system includes a front fixing device 10 disposed on the front side of the upper surface of the floor plate 11 of the automobile J, and a rear fixing device 40 installed on the rear side of the upper surface of the floor plate 11. . Self A slope 13 including two slope plates 13 a and 13 b that are foldable or telescopically stacked is provided at the rear portion of the moving vehicle J, and the wheelchair 1 can get on and off through the slope 13. On the floor plate 11 between the front fixing device 10 and the rear fixing device 40, a stopper 30 is provided that restricts movement of the wheelchair 1 forward (downward in FIG. 1) when the front wheel 3 of the wheelchair 1 hits. ing.
[0021]
As shown in FIG. 1, the front fixing device 10 includes a winder 12 disposed in the center on the back side of the floor plate 11, a pair of left and right belts 20 a and 20 b wound around the winder 12, and Hooks 21a and 21b connected to the front ends of the belts and direction changing members 22 arranged on the left and right of the floor plate 11 for changing the directions of the belts 20a and 20b are provided.
[0022]
The winder 12 is meshed with a case (reference numeral 14 in FIG. 2), a motor 15 that is provided in the case 14 so as to be freely reversible, a right gear 16a that is rotationally driven by the motor 15, and the gear 16a. The left gear 16b and drums 17a and 17b fixed to the upper surfaces of the gears 16a and 16b, respectively.
[0023]
As the belts 20a and 20b, for example, a belt made of a woven fabric similar to a seat belt of an automobile can be used, which makes it extremely robust and lightweight and easy to operate. The belt is a pulling member referred to in the claims. As the pulling member, a belt, a wire, a chain, or the like can be used. However, if the belts 20a and 20b are made of a textile product such as a woven fabric, there is an advantage that the mechanical image for the user is thinned and the user can use it with peace of mind. The base ends of the belts 20a and 20b are fixed to the drums 17a and 17b, respectively, and are wound on the drums in opposite directions. Thus, when the motor 15 rotates in one direction, the gears 16a and 16b are driven in opposite directions, and the belts 20a and 20b are wound around the drums 17a and 17b in synchronism. When the motor 15 rotates in the reverse direction, the drums 17a and 17b rotate in the opposite direction, and the belts 20a and 20b wound around the drums 17a and 17b are sent out in synchronization.
[0024]
As described above, in this embodiment, the left and right belts 20a and 20b are independent from the hooks at the leading ends to the base ends attached to the drums, and can be wound and fed in synchronism with the respective drums. it can. Therefore, the pulling force, the winding length, and the feeding length of the left and right belts 20a and 20b are maintained almost evenly, and it is easy to pull the wheelchair evenly and run straight. However, as will be described later, two belts can be wound around one drum, and the two belts can be wound or sent out by rotating the drum in one direction (FIGS. 7, 8, and FIG. 9a). It is possible to arrange two winders on the left and right sides, and to wind the traction member such as a belt. However, winding with the winder placed in the center is more effective for synchronous operation of winding and feeding. There is an advantage that it is easy and the installation space is small.
[0025]
The direction changing device 22 is installed on the floor plate 11 on the outer side of the winder 12 and closer to the rear part of the automobile J than the winder, particularly at a position between the winder and the stopper 30. The distance between the left and right direction changing members 22 is larger than the distance between the front legs of the wheelchair 1. In this embodiment, the direction changing device 22 includes inverted U-shaped support members 23 a and 23 b attached to the floor surface 11, and rollers 22 a and 22 b that are rotatably provided on these support members. The support member may be a simple shaft rod or the like, but by forming an inverted U shape, there is an advantage that the belts 20a and 20b are not detached from the support member. Further, by simply winding up the belts 20a and 20b, the hooks 21a and 21b which are turned sideways are hooked on any vertical bar portion of the support member. As a result, it can be held out of the way. Further, by using the rollers 22a and 22b, the frictional force between the belt and the direction changing member is reduced. However, a sliding guide member may be used. When a rope or wire cable is used as the pulling member, a pulley provided rotatably can be used.
[0026]
By using the direction changing member 22 as described above, the wheelchair 1 can be evenly pulled left and right in a diagonal direction forward and outward from the left and right by using only one central winder. And when fixing like FIG. 4, a wheelchair can be pulled right and left by a big angle. Therefore, even if the car swings from side to side, it is stable. When the wheelchair is far away from the winder 12 as shown in FIG. 2, the angles of the two belts 20a and 20b are not so steep as can be seen from FIG. Therefore, the left and right front legs of the wheelchair 1 that goes up the slope 13 are not pulled so strongly to the left and right, but are pulled almost straight forward.
[0027]
The stopper 30 abuts the left and right front wheels of the wheelchair to restrain forward movement of the wheelchair, and preferably has a bar shape or a plate shape extending to the left and right so as to absorb the left and right displacement of the wheelchair. A conventionally known stopper 30 can be used. The stopper 30 can be provided with a sensor for detecting that the wheelchair has come to a fixed position, and can be used for controlling the stop of the winder 12 or the like. Although it is possible to fix the wheelchair to some extent by using only the left and right belts and the stopper 30 wound by the winder 12, it is more stable to use the rear fixing device 40.
[0028]
The rear fixing device 40 includes a winder 40a having a drum driven by a motor, belts 42a and 42b wound around the drum, and hooks 41a and 41b connected to the tips of the belts. Can be used. The rear winder 40a is preferably capable of freely pulling out or locking the belts 42a and 42b by interposing a clutch between the motor and the drum, or engaging and disengaging gears.
[0029]
As shown in FIG. 4, the wheelchair placed on the floor of the automobile is pulled back and forth by the two belts 20 a and 20 b of the front fixing device 10 and the two belts 42 a and 42 b of the rear fixing device 40. Then, on the front side, the two belts 20a, 20b pull the front legs outward by the action of the direction changing members 22, 22, and on the rear side, the two belts 42a, 42b pull the rear legs evenly toward the center side. Thereby, the wheelchair is fixed in a stable posture.
[0030]
Next, a preferred control system for the wheelchair fixing device will be described. In the embodiment of FIG. 1, slack sensors 24a and 24b that detect slack of the belts 20a and 20b are further provided between the winder 12 and the rollers 22a and 22b. These slack sensors 24a and 24b are composed of a pressing rod 26 that presses the belts 20a and 20b by the urging force of the spring 25, and a limit switch 27 that is arranged on the opposite side of the pressing rod 26 with the belt interposed therebetween. Yes. The slack sensors 24a, 24b are not pressed by the actuator 28 of the limit switch 27 when sufficient tension is applied to the belts 20a, 20b. The belt is pushed toward the limit switch 27 and the actuator 28 of the limit switch 27 is operated. As a result, the contact of the internal switch outputs an on signal or an off signal.
[0031]
The front fixing device 10 is preferably remotely operated (so-called remote control operation) with the remote control device 34 shown in FIG. 5 for the convenience of the caregiver. The remote control device 34 is provided with a fixed switch 35, a stop switch 36, and a release switch 37 from above. Signals are transmitted by infrared rays or FM radio waves from a transmission unit (not shown) of the remote controller 34 to a reception unit (not shown) of the front fixing device 10. Further, the power of the motor 15 and other electric circuits of the front fixing device 10 is taken from the battery of the automobile J.
[0032]
FIG. 6 shows a block diagram of the electrical system of the front fixing device 10 described above. Signals from the above-described slack sensors 24a and 24b are input to the control unit 31, and signals from the fixed switch 35, stop switch 36, and release switch 37 of the remote control device 34 are also input to the control unit 31, respectively. . The control unit 31 sends a control signal for driving the motor 15 to the motor driver 32. In the controller 31, when the fixed switch 35 is operated, the motor 15 is rotated in the direction in which the winder 12 winds the belt until a stop signal is input. When the release switch 37 is operated, the motor is rotated in the direction in which the belt is sent out until a stop signal is input. The stop switch 36 is for stopping the motor manually.
[0033]
Further, this electric system is provided with an overcurrent detection unit 33 for detecting that the motor current in the motor driver 32 has become an overcurrent, and a detection signal from the overcurrent detection unit 33 is fed back to the control unit 31. Thus, the motor 15 is stopped. Further, the control unit 31 stops the motor 15 when any one of the contact signals of the limit switches 27 of the left and right slack sensors 24a and 24b is detected.
[0034]
Next, the wheelchair lift fixed system The overall operation will be described.
[Wheelchair Lifting Operation] First, the operation of lifting the wheelchair 1 from the ground into the automobile J and fixing the wheelchair 1 by the front fixing device 10 and the rear fixing device 40 in the vehicle will be described. Holding the hooks 21 a and 21 b at the ends of the belts 20 a and 20 b wound in the winder 12 of the front fixing device 10, the release switch 37 of the remote controller 34 is pushed. In this state, since the belts 20a and 20b are slack, the motor 15 has not yet rotated by signals from the slack sensors 24a and 24b, and the belts 20a and 20b are not sent out.
[0035]
Next, when the user pulls the hooks 21a and 21b backward, the belts 20a and 20b are tensioned, the limit switches of the slack sensors 24a and 24b are released, the motor 15 rotates, and the belts 20a and 20b are sent out. Therefore, the user can pull out the belt while maintaining the tension state of the belt. When the pulling-out operation is stopped, the slack sensors 24a and 24b work and the rotation of the motor 15 is stopped.
[0036]
In addition, when the operation of each switch of the remote controller 34 such as the pulling-out operation of the belts 20a and 20b is not performed for a certain period of time, the motor 15 is stopped. Thereby, safety is ensured.
[0037]
Next, as shown in FIG. 2, the left and right hooks 21 a and 21 b are respectively hooked on the front leg 5 of the wheelchair 1 and the fixing switch 35 of the remote controller 34 is pushed. In this state, since the belts 20a and 20b are slack, the slack sensors 24a and 24b are operating. Therefore, the motor 15 is stopped by the detection signals of the slack sensors 24a and 24b. When the assistant retracts the wheelchair 1 slightly so that the belts 20a and 20b are loosened, the belts 20a and 20b are not loosened, and the slack sensors 24a and 24b control the signals that the belts 20a and 20b are not loosened. To the unit 31. As a result, the control unit 31 drives and controls the motor 15 in the winding direction of the belts 20a and 20b via the motor driver 32.
[0038]
When the motor 15 rotates, the belts 20 a and 20 b are wound around the drums 17 a and 17 b, and the wheelchair 1 is pulled up along the slope plate 13. Then, the wheelchair 1 is drawn toward the winder 12, and the wheelchair 1 stops when its front wheel 3 hits the stopper 30. Then, an overcurrent flows through the motor 15, the overcurrent detection unit 33 detects the overcurrent, and sends the detection signal to the control unit 31 to stop the rotation of the motor 15. This state is shown in FIG. Therefore, the front wheel 5 of the wheelchair 1 is in a state where the front wheel 3 is in contact with the stopper 30, and the front leg 5 of the wheelchair 1 is pulled obliquely forward and leftward and symmetrically by the belts 20a and 20b via the rollers 22a and 22b to the winder 12 side. It becomes a fixed state. Thereby, the wheelchair 1 can be reliably stopped at a predetermined position (position of the stopper 30), and the person on the wheelchair 1 does not feel uneasy.
[0039]
After the front legs 5 and 5 on both sides of the wheelchair 1 are thus fixed by the belts 20a and 20b and the hooks 21a and 21b of the front fixing device 10, the hooks 41a and 41b of the rear fixing device 40 are pulled out and the rear legs 6 of the wheelchair 1 are pulled out. Hang on. Then, the motor and gear inside the rear fixing device 40 are driven to take up the belts 42a and 42b, and the belts 42a and 42b are locked in this state. As a result, the rear leg 6 of the wheelchair 1 is securely fixed by the belts 42a and 42b and the hooks 41a and 41b of the rear fixing device 40.
[0040]
Here, as shown in FIG. 4, in the state where the front leg 5 of the wheelchair 1 is hooked and fixed by the belts 20a and 20b and the hooks 21a and 21b, the belts 20a and 20b change the pulling direction by the rollers 22a and 22b. 1 is fixed in an oblique direction. Therefore, unlike the conventional example (see FIGS. 10 and 11) in which the belt is fixed in the same direction as the traveling direction of the automobile J (see FIGS. 10 and 11), not only the front and rear direction of the wheelchair 1 but also the shaking in the left and right direction is prevented. can do. That is, the wheelchair 1 can be strongly fixed against a lateral load.
[0041]
[Operation of getting off the wheelchair]
Next, an operation when the wheelchair 1 fixed in the automobile J is released and lowered to the ground will be described. First, the hooks 41 a and 41 b of the rear fixing device 40 are removed from the rear legs 6 of the wheelchair 1 and the release switch 37 of the remote controller 34 is pushed. By pressing the release switch 37, the motor 15 of the front fixing device 10 rotates in the opposite direction to that described above, and the belts 20a and 20b are somewhat fed out. As a result, the tension of the belt disappears, and the slack sensors 24a and 24b detect this to stop the motor 15 temporarily.
[0042]
Next, when the caregiver pulls the wheelchair 1 in the backward direction (the direction of getting off the car J), the belts 20a and 20b are stretched. When the left and right belts 20a and 20b are stretched, the slack sensors 24a and 24b detect and the motor 15 rotates again in the feeding direction of the belts 20a and 20b, and the wheelchair 1 is lowered while restricting the wheelchair 1 from rolling freely. Can be made. At that time, if the wheelchair stops for some reason, the belt loosens, so the motor stops and the belt is not fed any further. Therefore, even if the assistant relaxes his / her hand, the wheelchair is secured by the belt immediately and is safe because it does not roll off. Even if the wheelchair starts running diagonally, one of the slack sensors detects slack, so the wheelchair stops immediately. Therefore, it is safe.
[0043]
When the wheelchair 1 descends from the slope plate 13 to the ground and the assistant stops the wheelchair, the belts 20a and 20b are loosened and the motor is stopped. As a result, the assistant removes the hooks 21a and 21b from the front leg 5 of the wheelchair 1 to complete the dismounting. Thereafter, the assistant pushes the fixed switch 35 of the remote controller 34. By pressing the fixing switch 35, the motor 15 rotates in the direction of winding the belt, so that the caregiver pulls the hooks 21a and 21b by hand, winds the belts 20a and 20b to the initial position, and pulls the hooks 21a and 21b. For example, it is stored by being hooked on the direction changing member 22.
[0044]
Thus, in this embodiment, since belt 20a, 20b is hooked on the front leg 5 of the wheelchair 1 from the diagonal direction, it becomes strong with respect to a lateral load, can prevent a horizontal shake, and fixes the wheelchair 1 reliably. be able to. Further, when the belts 20a and 20b are slackened by the slack sensors 24a and 24b, the motor 15 is stopped to be locked, and an accident when the wheelchair 1 gets on and off can be prevented. Further, when the overcurrent of the motor 15 is detected and the overcurrent is detected, the motor 15 is stopped, so that when the wheelchair 1 gets on and off, the front wheel 3 or the rear wheel 4 hits something and the movement is restricted. In addition, the wheelchair 1 is not moved forcibly and the motor 15 (motor coil) is not damaged.
[0045]
In the above-described embodiment, the left and right belts 20a and 20b are wound by separate drums, but can be wound by a single drum 17 as shown in FIG. In that case, a pair of gears (reference numerals 16a and 16b in FIG. 1) is unnecessary. Moreover, in the said embodiment, the direction change member 22 is arrange | positioned large apart on either side. . Outside the scope of the present invention However, as shown in FIG. 8, it may be arranged at the center. In that case, the folding wheelchair will be subjected to a load in the folding direction, but this is also fixed as shown by the imaginary line because the pulling members such as the two belts 20a, 20b are gathered at the center side. Sometimes stretched diagonally. Therefore, it is possible to prevent lateral shaking at the time of fixation, which is safer than the conventional apparatus.
[0046]
In FIG. 9a, the base end side of the two belts 20a and 20b is made one. Devices outside the scope of the present invention Is shown. And this thing The two belts 20a and 20b on the distal end side and the one belt 20c on the proximal end side are coupled by a triangular annular coupling tool 45. this apparatus Then, this connection tool 45 is a direction change member. As the connecting tool 45, a metal rod bent in an isosceles triangle shape and connected by a sleeve 46, or a shape molded with a synthetic resin is used.
[0047]
Furthermore this apparatus Then, as shown in FIG. 9 b, a locking projection 47 for locking the connector 45 is provided at the upper end of the winder 10. The locking projection 47 can be provided, for example, by forming a notch in the left and right plate-like brackets 48 that rotatably hold the drum 17. Thus, when the wheelchair is fixed, the wheelchair 1 can be more safely secured by pulling the hook of the rear fixing device on the rear leg of the wheelchair 1 while the connector 45 or the sleeve 46 is hooked on the locking projection 46. Can be fixed.
[0048]
The triangular shape of the connecting tool 45, in particular, the angle θ between the two sides to which the belts 20a and 20b on the front end side are attached depends on various conditions such as the positional relationship between the winder 10 and the stopper 30 and the internal width of the automobile. It may be selected accordingly (see FIG. 9b).
[0049]
In the above embodiment, the slack sensors 24 a and 24 b are independent of the winder 12, but can be incorporated in the winder 12. Further, the direction changing member 22 is provided so as to be movable within a predetermined range, and is biased by a spring and the position thereof is detected by a limit switch, so that it can be integrated with the direction changing member.
[Brief description of the drawings]
FIG. 1 shows the present invention. Car It is a top view which shows embodiment of the whole chair raising / lowering fixing system.
FIG. 2 is an elevational sectional view of the wheelchair lifting / fixing system of FIG. 1;
FIG. 3 shows in FIG. Forward It is a front view of a fixing device.
4 is a plan view showing a wheelchair fixed state of the wheelchair elevating and fixing system of FIG. 1. FIG.
FIG. 5 is a plan view showing an embodiment of a remote control device according to the present invention.
FIG. 6 is a block diagram showing an embodiment of the electric system of the wheelchair lifting and fixing system of the present invention.
FIG. 7 Wheelchair of the present invention Forward in the lifting and fixing system It is a top view which shows other embodiment of a fixing device.
[Fig. 8] of the present invention Out-of-range forward fixing device It is a top view which shows other embodiment.
FIG. 9a is an illustration of the present invention. Out of range Still other of fixing devices Example FIG. 9c is a plan view and a side view of the main part showing Out of range Other of coupling Example FIG.
FIG. 10 is a plan view showing an example of a conventional wheelchair fixing device.
11 is a plan view showing a fixed state of the wheelchair of the apparatus of FIG.
[Explanation of symbols]
1 Wheelchair
2 frames
3 Front wheels
4 Rear wheels
5 front legs
6 Rear legs
J car
10 Forward fixing device
11 Floor
12 Forward fixing device
13a, 13b slope plate
13 slope
15 motor
16a, 16b gear
17a, 17b drum
20a, 20b belt
21a, 21b hook
22 Direction change member
22a, 22b Roller
23a, 23b Support member
24a, 24b Looseness sensor
25 Spring
26 Press rod
27 Limit switch
28 Actuator
30 Stopper
31 Control unit
32 Motor driver
33 Overcurrent detector
34 Remote control device
35 Fixed switch
36 Stop switch
37 Release switch
40 Rear fixing device
40a Winder
41a, 41b hook
42a, 42b belt
17 drums
20c Proximal belt
45 connector
46 sleeve
47 Locking projection
48 Bracket

Claims (3)

A winder provided in the vehicle, and a pair of left and right traction members connected to the winder so as to be freely wound and fed, and provided with hooks for engaging with the free ends in the vicinity of the left and right of the front side of the wheelchair , respectively A front fixing device that also serves as a boarding / alighting assisting device, comprising: a direction changing member that changes the direction of the traction member symmetrically with respect to the vehicle body in a state where the traction member is wound on the winder; When,
A rear fixing device for fixing the rear side of the wheelchair provided with a hook to be engaged near the left and right of the rear side of the wheelchair;
The winder is disposed in the center of the vehicle and winds up two pulling members at one place,
Each of the direction changing members engages with the middle of the traction member to change the direction of travel thereof, and is arranged in a pair of left and right in the vehicle at an interval larger than the width of the wheelchair,
When the wheelchair is far from the winder, the two traction members extend almost in parallel,
As the wheelchair approaches the winder, the two tow members gradually tilt at a steep angle with respect to the wheelchair,
In a state where the wheelchair is fixed, the two traction members tilt at a steep angle and pull the wheelchair outward and symmetrically.
Wheelchair lifting and fixing system . The left and right slack sensors for detecting the slack of the traction member , the front fixing device ;
The wheelchair lifting and fixing system according to claim 1, further comprising: a control device that stops the drive motor of the winder when one of the slack sensors detects slack. The wheelchair ascending and descending according to claim 2 , wherein the control device includes an overcurrent detection unit that detects an overcurrent of a drive motor of the winder and a circuit that stops the motor when the overcurrent detection unit detects the overcurrent. Fixing system .

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