JP5080323B2 - Wheelchair lifting device - Google Patents

Description

  The present invention relates to a wheelchair lifting device for lifting a wheelchair along a slope.

  2. Description of the Related Art Conventionally, a wheelchair lifting device that assists getting on and off by lifting a wheelchair when getting on and off a wheelchair using a slope provided in a vehicle is known (see, for example, Patent Document 1).

  This wheelchair lifting device is configured to wind up and retract a belt locked to the wheelchair, and a method of fixing the wheelchair using this pulling force has been devised.

  That is, when the wheelchair is fixed, the fixing belt is locked to the rear part of the frame of the wheelchair to fix it to the vehicle body floor, and the wheelchair lifting device is operated in the lifting direction by operating the lifting button. Then, the belt locked to the front part of the frame of the wheelchair is drawn into the wheelchair lifting device.

Thereby, the wheelchair is fixed to the vehicle body floor in a state where the wheelchair is pulled from the front and rear by a belt locked to the frame.
JP 2006-271661 A

  However, in such a conventional wheelchair lifting device, the wheelchair is fixed using a lifting button operated when the wheelchair is lifted. Therefore, as shown in FIG. Is entered into the wheelchair.

  At this time, in this wheelchair lifting apparatus, a motor having a large torque is used for lifting and fixing the wheelchair, and the input applied to the wheelchair becomes larger than necessary at the start of the fixing.

  The present invention has been made in view of such conventional problems, and an object of the present invention is to provide a wheelchair lifting device capable of suppressing the pulling force at the start of fixing while securing the pulling force necessary for fixing. To do.

Wherein is a problem in wheelchair pulling apparatus of the present invention to solve the, function by utilizing an operation of pulling the belt engaged with the wheelchair, pulling the wheelchair into the vehicle interior along a slope provided in a vehicle When, in the wheelchair pulling device which realizes the function of fixing the wheelchair was pulled into the passenger compartment, and a control device for varying the pull force before Symbol belt high output from a low output when starting the fixing of the wheelchair, the A remote controller that causes the control device to perform the belt pull-in operation, and the remote controller has a dedicated lock button that is operated when the wheelchair is fixed independently of the pull-up button that is operated when the wheelchair is pulled up. Provided.

  That is, when the wheelchair is fixed, the retracting force of the belt locked on the wheelchair changes from low output to high output.

  For this reason, in the initial stage in which the pulling force is low, the belt locked on the wheelchair is pulled at low output, so that the belt is slackened.

  Next, in the middle stage in which the pulling force is slightly increased, the wheelchair is started to move with the slightly increased pulling force in accordance with the pulling of the belt.

  In the final stage in which the pulling force is increased, the wheelchair moved to the fixed position with a slightly higher pulling force is fixed by the belt tension to which the high output pulling force is applied.

Further , when the wheelchair is pulled up along the slope into the vehicle interior, the pull-up button provided on the remote controller is operated, while when the wheelchair lifted into the vehicle interior is fixed, the remote controller is provided with the remote controller. The fixed button is operated.

  Thus, since the operated buttons differ depending on whether the wheelchair is pulled up along the slope or when the raised wheelchair is fixed, different controls can be performed.

Or In the wheelchair pulling apparatus of the present invention, as described, to initiate the wheelchair fixed, it is possible to vary the attractive force of the engaged a belt in a wheelchair to a high output from a low output, pull In the initial stage where the force is low, the belt locked on the wheelchair can be slowly pulled in at a low output to remove the slack of the belt.

  Next, in the middle stage in which the pulling force is slightly increased, the wheelchair is gradually moved by the slightly increased pulling force according to the pulling of the belt, and can be moved to the fixed position.

  In the final stage where the pull-in force is increased, the wheelchair that has been slowly moved to the fixed position is pulled in with the belt tension applied with the high-output pull-in force, thereby fixing the wheelchair with the high-output pull-in force. can do.

  Thus, when fixing the wheelchair, since the pulling force of the belt locked to the wheelchair can be gradually increased, compared with the conventional case where 100% pulling force is input to the wheelchair at the start, A sufficiently large pulling force can be input for lifting or fixing the wheelchair while suppressing input applied to the wheelchair at the start of fixing.

  Therefore, it is possible to provide a wheelchair lifting device capable of suppressing the pulling force at the start of fixing while securing the pulling force necessary for fixing and pulling.

Further, by operating the pulling button remote controller, it can be pulled into the compartment of the wheelchair along the slope. Moreover, the wheelchair pulled up in the vehicle interior can be fixed by operating the fixing button provided on the remote controller.

  Thus, since the operated buttons differ depending on whether the wheelchair is pulled up along the slope or when the raised wheelchair is fixed, different controls can be performed.

  Thereby, at the time of fixation, a wheelchair can be slowly fixed by control suitable for fixation, and at the time of pulling up, a wheelchair can be pulled up with high output from the start.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a view showing a wheelchair lifting apparatus 1 according to the present embodiment. The wheelchair lifting apparatus 1 uses an operation of pulling a pull-in belt 3 locked to a wheelchair 2, and FIG. As shown in FIG. 1, the function of lifting the wheelchair 2 to the rear chamber 6 along the slope 9 spanned between the vehicle body floor 7 and the road surface 8 of the rear chamber 6 of the vehicle 5; As shown, the wheelchair 2 raised in the rear chamber 6 can be fixed.

  That is, the wheelchair lifting device 1 is fixed to the vehicle body floor 7 in front of the rear chamber 6, and a fixed region 11 for fixing the lifted wheelchair 2 is set behind the wheelchair lifting device 1. ing. Left and right fixing belts 12 whose base ends are fixed to the vehicle body floor 7 are provided at the rear of the fixing region 11 (only one is shown), and the fixing belt 12 is attached to the tip of each fixing belt 12. A fixing hook 16 is provided to be engaged with the rear part of the frame 15 of the wheelchair 2.

  Thus, when the wheelchair 2 is fixed, the fixing hook 16 provided on the left fixing belt 12 is locked to the left side of the rear portion of the frame 15 of the wheelchair 2 and the fixing hook 16 provided on the right fixing belt 12 is fixed to the wheelchair 2. The rear portion of the frame 15 of the wheelchair 2 can be fixed to the vehicle body floor 7 via the fixing belt 12 by being locked to the right side of the rear portion of the frame 15.

  The device body 21 of the wheelchair lifting device 1 is provided with left and right drawing belts 3 (only one is shown), and a drawing hook 22 is provided at the tip of each drawing belt 3. Each pull-in belt 3 is configured to be retractable into the apparatus main body 21, and the pull-in hook 22 at the tip of the pulled-out left pull-in belt 3 is locked to the left side of the front portion of the frame 15 of the wheelchair 2. The front portion of the frame 15 of the wheelchair 2 is moved by pulling the pull-in belt 3 into the apparatus main body 21 in a state where the pull-in hook 22 at the tip of the right pull-in belt is locked to the right side of the front portion of the frame 15 of the wheelchair 2. It is configured so that it can be pulled by the both retracting belts 3 and moved to the apparatus main body 21 side.

  As shown in FIG. 2, a control device 31 is provided in the device main body 21. The control device 31 is mainly composed of a microcomputer. A left motor 33 is connected to the control device 31 via a left motor drive circuit 32. The left motor 33 passes a left drum (not shown) around which the left pull-in belt 3 is wound through a reduction gear. And is configured to rotate. A right motor 35 is connected to the control device 31 via a right motor drive circuit 34. The right motor 35 reduces a right drum (not shown) around which the right retracting belt 3 is wound with a reduction gear. It is comprised so that it may rotate through.

  Thus, by outputting the duty signal from the control device 31 to the left motor driving circuit 32 and the right motor driving circuit 34, each motor driving circuit 32, 34 is continuously or intermittently according to the inputted duty signal. The output power from each of the motors 33 and 35 is adjusted by varying the duty ratio of the duty signal, and the respective retractable belts 3 are configured to supply the generated power to the connected motors 33 and 35. It is comprised so that the drawing force P by can be controlled.

  The control device 31 is connected with a reverse prevention solenoid 41. By turning on the reverse prevention solenoid 41 and operating a latch mechanism (not shown), the drums in the drawing belt 3 withdrawing direction are arranged. It is comprised so that the back prevention state which prevented rotation can be formed. In addition, a buzzer 42 is connected to the control device 31 so that the buzzer 42 can be sounded.

  Further, the control device 31 is provided with a light receiving unit 51, which receives the infrared signal 53 output from the remote controller 52 and receives a control code included in the infrared signal 53. Demodulated, digitized, and output to the control device 31. The control device 31 to which this control code is input is configured to operate according to the control code.

  The remote controller 52 is provided with a wheelchair fixing frame 61, a remote control power supply frame 62, and a wheelchair pulling / drawing frame 63. The wheelchair lifting / drawing frame 63 includes a wheelchair 2. A pull-up button 65 that is operated when the wheelchair 2 is pulled up along the slope 9 and a pull-out button 66 that is operated when the wheelchair 2 is lowered along the slope 9 are provided.

  Also, in the wheelchair fixing frame 61, there are provided a fixing button 71 that is operated when the wheelchair 2 is fixed to the fixing region 11, and a releasing button 72 that is operated when releasing the fixing. The remote control power supply frame 62 is provided with a power button 75 that is operated when the wheelchair lifting device 1 is turned on and off.

  Accordingly, the remote controller 52 is configured to cause the control device 31 to perform the pull-in operation of each pull-up belt 3 and is operated when the wheelchair 2 is fixed to the remote controller 52. The fixed button 71 is provided independently of the pull-up button 65 operated when the wheelchair is lifted.

  The pull-up button 65, the pull-out button 66, and the fixed-only button 71 are configured to transmit a corresponding control code on the infrared signal 53 while being pressed. By releasing 65, 66, 71, the output of the corresponding control code is stopped. In the control device 31 that has received this control code, while the control code is being received, the operation corresponding to the control code is continued, and when the input control code is interrupted, the control code It is configured to stop the operation according to.

  FIG. 3 is a flowchart showing the operation of the control device 31, and the control device 31 is configured to operate according to a program stored in the ROM built in the microcomputer.

  That is, as shown in FIG. 3 and FIG. 4, the control device 31 that executes this program transmits the infrared signal 53 transmitted while the fixed exclusive button 71 of the remote controller 52 is operated to the light receiving unit. When the demodulated control code is received and demodulated at 51, and the demodulated control code is input, it is determined whether or not the input control code is the "fixed dedicated button 71" (S1).

  At this time, the process corresponding to the control code is continued while the input of the control code is continued, but the process is interrupted when the input of the control code is stopped. Thereby, in the said remote controller 52, the said wheelchair raising apparatus 1 can be stopped urgently by releasing the button in operation.

  When the same control code is input after this interruption, the processing corresponding to the control code is executed from the beginning.

  In this determination, if the input control code is not the “fixed dedicated button 71”, that is, if the fixed dedicated button 71 is “OFF”, the process proceeds to another process, while the control code is “fixed dedicated button 71”. If the button 71 "is used, that is, if the fixed dedicated button 71 is" ON ", the fixed mode is executed (S2).

  At this time, the control device 31 turns on the buzzer 42 for 0.1 seconds (T1), turns it off for 0.05 seconds, and then turns it on for 0.1 seconds. Is turned on (T2) to form a state in which the drums are prevented from rotating in the direction in which the retractable belts 3 extend (see FIG. 4). .

  In this fixed mode, the motors 33 and 35 corresponding to the motor drive circuits 32 and 34 are controlled to rotate in the pull-up direction, and the duty ratio of the motor drive circuits 32 and 34 is 50%. (T2), the corresponding motors 33 and 35 are driven by the motor drive circuits 32 and 34 with a drive signal having a duty ratio of 50% for 0.5 seconds (S3).

  Thereby, the torque of each of the motors 33 and 35 can be set to a low output, and the drawing force P of each drawing belt 3 can be set to a low output for 0.5 seconds.

  When driving at a duty ratio of 50% is performed for 0.5 seconds, a control signal having a duty ratio of 80% is output to both the motor drive circuits 32 and 34 (T3). The corresponding motors 33 and 35 are driven by a drive signal with a duty ratio of 80% for 0.5 seconds by means of 32 and 34 (S4).

  Thereby, the torque of each of the motors 33 and 35 can be set to a medium output, and the pulling force P of each pull-in belt 3 can be set to a medium output for 0.5 seconds.

  When driving at a duty ratio of 80% is performed for 0.5 seconds, a control signal having a duty ratio of 100% is output to both the motor drive circuits 32 and 34 (T4), thereby each motor drive circuit. The corresponding motors 33 and 35 are driven by a drive signal with a duty ratio of 100% for 1.0 second by means of 32 and 34 (S8).

  Thereby, the torque of each of the motors 33 and 35 can be set to a high output (Max), and the pulling force P of each pulling belt 3 can be maintained at a high output for 1 second.

  After driving at the duty ratio of 100% for 1 second (T5), the control signals to both the motor drive circuits 32, 34 are stopped, so that the motors 33, The energization to 35 is cut off, the motors 33 and 35 are stopped, and the fixing is completed (S8).

  Thereby, compared with the case where the wheelchair 2 is fixed by operating the pull-up button 65, the burden on the caregiver can be reduced.

  Then, one second after the energization of the motors 33 and 35 is cut off (T6), the turn-off prevention solenoid 41 is turned off to turn off the retractable belts 3 in the extending direction. The state in which the rotation of the drum is prevented is released (see FIG. 4). At this time, the respective drums are prevented from being reversely rotated in the direction in which the respective pull-in belts 3 are extended by the reverse rotation preventing function by the reduction gears connected to the respective drums.

  In the present embodiment according to the above configuration, when fixing the wheelchair 2 pulled up to the rear chamber 6, the fixing hook 16 of the left fixing belt 12 fixed to the vehicle body floor 7 is attached to the rear portion of the frame 15 of the wheelchair 2. And the fixing hook 16 of the right fixing belt 12 is locked to the right side of the rear part of the frame 15 of the wheelchair 2, and the rear part of the frame 15 of the wheelchair 2 is connected to the vehicle body floor 7 via the fixing belt 12. Secure to.

  In this state, the fixing exclusive button 71 of the remote controller 52 is continuously pressed until the fixing is completed. Then, the pull-in belt 3 locked to the wheelchair 2 starts to be pulled into the apparatus main body 21, and the pull-in force P gradually decreases from a low output to a high output as indicated by a motor output line 101 in FIG. To change.

  For this reason, in the initial stage where the pull-in force P is low output (see step S3), the slack generated in the pull-in belt 3 is removed by slowly pulling in the pull-in belt 3 locked to the wheelchair 2 with low output. be able to.

  Next, in the middle stage where the pull-in force P is slightly increased (see step S4), the wheelchair 2 starts to move with the pull-in force P slightly increased according to the pull-in of the pull-in belt 3, and the wheelchair 2 can be moved slowly to the fixed region 11.

  Then, in the final stage where the pull-in force P is increased (see step S5), the wheelchair 2 that has been slowly moved to the fixed region 11 is pulled in by the tension of the pull-in belt 3 to which the high-output pull-in force P is applied. Thus, the wheelchair 2 can be fixed to the vehicle body floor 7 with a high-output pulling force P.

  In this way, when the wheelchair 2 is fixed, the pulling force P of the pulling belt 3 locked to the wheelchair 2 can be gradually increased, so that 100% pulling force P is applied to the wheelchair 2 at the start of fixing. Compared with the conventional input, it is possible to apply a sufficiently large pulling force P when pulling up or fixing the wheelchair 2 while suppressing input applied to the wheelchair 2 at the start of fixing.

  Therefore, the wheelchair lifting device 1 can be configured to be able to suppress the pulling force P at the start of fixing while securing the pulling force P necessary for fixing and pulling.

  The remote controller 52 is provided with the fixing exclusive button 71 operated when the wheelchair 2 is fixed independently of the pulling up button 65 operated when the wheelchair is pulled up.

  For this reason, the wheelchair 2 can be pulled up into the rear chamber 6 along the slope 9 by operating the pull-up button 65 of the remote controller 52. Further, by operating the fixing exclusive button 71 provided on the remote controller 52, the wheelchair 2 pulled up into the rear chamber 6 can be gradually fixed, and the fixing operation can be completed after 2 seconds. .

  Thus, since the operated buttons differ depending on whether the wheelchair 2 is pulled up along the slope 9 or when the lifted wheelchair 2 is fixed, different controls are performed as in the present embodiment. be able to.

  Thereby, at the time of fixation, the wheelchair 2 can be slowly fixed by control suitable for fixation, and at the time of pulling up, the wheelchair 2 can be pulled up with high output from the start.

It is a figure which shows one embodiment of this invention, (a) is explanatory drawing which shows the state which pulls up a wheelchair along a slope, (b) is explanatory drawing which shows the state which fixes a wheelchair. It is a block diagram which shows the apparatus main body of the embodiment. It is a flowchart which shows the operation | movement of the embodiment. It is a timing chart which shows the operation | movement of the embodiment. It is explanatory drawing which shows operation | movement of the embodiment. It is explanatory drawing which shows operation | movement of the conventional wheelchair raising apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Wheelchair raising device 2 Wheelchair 3 Retraction belt 5 Vehicle 6 Rear room 7 Body floor 9 Slope 12 Fixed belt 31 Control device 52 Remote controller 65 Pull-up button 71 Fixed button P Retraction force

Claims (1)

A wheelchair lifting device that realizes a function of pulling up the wheelchair into the vehicle interior along a slope provided in the vehicle and a function of fixing the wheelchair pulled up in the vehicle interior using an operation of pulling a belt locked to the wheelchair. In
A control device for varying the pull force before Symbol belt when starting the fixing of the wheelchair to a high output from a low output,
A remote controller that causes the control device to perform the belt retraction operation,
A wheelchair lifting device , wherein the remote controller is provided with a dedicated locking button that is operated when the wheelchair is fixed independently of the pulling button that is operated when the wheelchair is lifted.

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