JP3788425B2 - Vehicle slope drive mechanism - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a slope drive mechanism that rotates a slope member that enables getting on and off a vehicle with a wheelchair between an upper limit position that is a standing position and a lower limit position that is a lying position.
[0002]
[Prior art]
An example of this kind of slope drive mechanism is described in Japanese Patent Laid-Open No. 2002-154368, and a schematic diagram of an electric circuit for operating a drive motor of the slope drive mechanism is shown in FIG.
As shown in FIG. 9, the slope driving mechanism is driven by two DC motors M1, M2, and these DC motors M1, M2 are electrically connected in parallel.
When a slope member (not shown) is rotated from the standing position (upper limit position) to the fall position (lower limit position), the switch SW is operated to the fall side. As a result, the relay R2 is turned on, the relay R1 is turned off, + 12V is applied to the T2 terminals of the DC motors M1 and M2, 0V is applied to the T1 terminals, the DC motors M1 and M2 are driven in reverse rotation, and the slope member rotates in the lying down direction. Move.
Further, when the slope member is rotated from the lying position (lower limit position) to the standing position (upper limit position), the switch SW is operated to the standing side. As a result, the relay R1 is turned on, the relay R2 is turned off, + 12V is applied to the T1 terminals of the DC motors M1 and M2, 0V is applied to the T2 terminals, the DC motors M1 and M2 are driven to rotate forward, and the slope member is in the standing direction. Rotate.
[0003]
[Patent Document 1]
JP 2002-154368 A
[0004]
[Problems to be solved by the invention]
Generally, when the slope member is rotated (upwardly rotated) in the standing direction, the weight of the slope member is applied in the opposite direction to the operation of the slope drive mechanism. Further, when the slope member is rotated in the lying down direction (downwardly rotated), the weight of the slope member is added to the operation direction of the slope drive mechanism. For this reason, when the DC motors M1 and M2 are driven at the same voltage when the slope member is rotated in the standing direction or the lying direction, the rotating speed in the lying direction of the slope member is faster than the rotating speed in the standing direction. Become.
For this reason, if the rotation speed of the rising direction of the slope member is set to an appropriate speed, the rotation speed of the slope member in the lying down direction becomes too fast. Moreover, when the rotation speed of the slope member in the lying down direction is set to an appropriate speed, the rotation speed of the slope member in the standing direction is slowed down.
[0005]
The present invention has been made in view of the above problems, and when the rotation speed of the slope member in the standing direction is an appropriate speed, the rotation speed of the slope member in the lying down direction becomes too faster than the appropriate speed. The purpose is to avoid.
[0006]
[Means for Solving the Problems]
The above-described problems are solved by the inventions of the claims.
According to the first aspect of the present invention, the upper end position where the slope member connected to the lower end edge of the opening of the vehicle in a state where the base end portion is rotatable is raised, and the vehicle is used so that it can be used as a slope. A vehicle slope drive mechanism that is rotated between a lower limit position and a driving source. of Electric motor And an electric circuit of the electric motor, and a changeover switch for starting the electric motor in an upright direction of the slope member or an inclining direction, and the inversion direction of the slope member. The applied voltage of the electric motor when operated to be higher than the applied voltage of the electric motor when the changeover switch is operated in the rising direction of the slope member. small So that The rotation speed when rotating the slope member in the inclining direction should not be higher than the rotation speed when rotating the slope member in the standing direction. Do It is characterized by that.
[0007]
According to the present invention, the slope member is rotated in the lying down direction so that the turning speed when turning the slope member in the lying down direction is not greater than the turning speed when turning the slope member in the standing direction. The applied voltage of the motor at this time is set to be smaller than the applied voltage of the motor when the slope member is rotated in the standing direction. For this reason, when the rotation speed of the slope member in the standing direction is an appropriate speed, the rotation speed of the slope member in the lying down direction does not become faster than the appropriate speed.
[0008]
The invention of claim 2 includes a plurality of electric motors, and when the slope members are rotated in the lying down direction, the electric motors are connected to a power source in a state of being electrically connected in series, and the slope members When the motors are rotated in the standing direction, the electric motors are electrically connected in parallel and connected to the power source. That is, the applied voltage of the motor when the slope member is rotated in the lying down direction is substantially equal to the value obtained by dividing the power supply voltage by the number of motors. Further, the applied voltage of the electric motor when the slope member is rotated in the standing direction is substantially equal to the power supply voltage.
As described above, since the motors are connected in parallel or in series and the applied voltages of those motors are changed, the cost can be reduced as compared with, for example, voltage control using a computer or the like. it can.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
(Embodiment 1)
Hereinafter, based on FIGS. 1-4, the slope drive mechanism of the vehicle which concerns on Embodiment 1 of this invention is demonstrated. The vehicle slope drive mechanism is a mechanism for driving the vehicle slope device, and FIG. 1 is a flowchart showing the operation of the slope drive mechanism. 2 and 3 are electric circuit diagrams of the slope drive mechanism, and FIG. 4 is an overall perspective view of the vehicle slope device.
The slope device 10 is, for example, a device for enabling getting on and off a vehicle in a wheelchair, and is attached to the rear part of the van type vehicle 2 as shown in FIG. FIG. 4A shows a state in which the slope device is laid down so that it can be used as a slope.
[0010]
At the rear part of the van type vehicle 2, a main opening 3 that is opened and closed by a flip-up type back door (not shown) and a central part of the rear bumper 4 are formed, and arranged below the main opening 3. A lower opening 5 is provided.
The lower opening 5 has a height dimension substantially equal to the height dimension of the rear bumper 4 and is formed in a wide-angle shape. And the base end part of the tailgate 12 which comprises the slope apparatus 10 is connected with the lower end edge of the lower opening 5 in the state which can be rotated up and down.
[0011]
The tailgate 12 has a standing position (upper limit position) for closing the lower opening 5 and a lying position (lower limit position) where the lower gate 5 can be used as a slope by the action of the first slope drive mechanism described later. It is comprised so that it can rotate up and down.
The first slope drive mechanism includes tailgate motors M11 and M12 and speed reducers (not shown) installed on the left and right side walls of the passenger compartment, a rotating arm 14, and a link arm 13. . The rotation arm 14 is connected to the rotation shafts of the left and right reduction gears at a substantially right angle in a state in which the rotation arm 14 is not relatively rotatable, and the base end portion of the link arm 13 is rotatable at the distal end portion of the rotation arm 14. It is connected. And the front-end | tip part of the link arm 13 is connected with the width direction edge part of the tailgate 12 in the state which can rotate.
[0012]
As a result, when the left and right tailgate motors M11 and M12 are driven to rotate in the forward direction and the pivot arm 14 pivots upward, the tailgate 12 is pulled by the left and right pivot arms 14 and the link arm 13, and from the lying down position. It rotates in the standing direction. Further, when the left and right tailgate motors M11 and M12 are driven in reverse to rotate the pivot arm 14 downward, the tailgate 12 pivots from the standing position to the lying down direction with almost its own weight. That is, the tailgate 12 corresponds to the slope member of the present invention. The lower opening 5 of the van type vehicle 2 corresponds to the opening of the present invention.
[0013]
A proximal end portion of the first slope plate 16 is connected to the distal end portion of the tail gate 12 in a state in which the first slope plate 16 can be turned up and down, and a proximal end portion of the second slope plate 17 is connected to the distal end portion of the first slope plate 16. They are connected so that they can be pivoted up and down. The first slope plate 16 and the second slope plate 17 are operated between the overlapping position overlaid on the tail gate 12 and the lying position on the extended line of the tail gate 12 by the action of the second slope driving mechanism described later. Then, it is developed or folded in a substantially folding screen (see FIGS. 4C and 4D).
[0014]
The second slope drive mechanism includes a slope plate motor M2 and a speed reducer (not shown) installed at the tip of the tailgate 12, and a main pulley 18 is fixed to the rotation shaft of the speed reducer. Yes. Further, a wire 19 is hung on the main pulley 18, and the wire 19 can be wound and fed by the rotation of the main pulley 18.
[0015]
When the slope plate motor M2 is driven to rotate in the forward direction and the main pulley 18 rotates in the forward direction, the wire 19 is wound in a fixed direction and further fed out. As a result, the first slope plate 16 and the second slope plate 17 are pulled by the wire 19 and folded from the lying position to the overlapping position.
Further, when the slope plate motor M2 is driven in reverse to rotate the main pulley 18 in the reverse direction, the wire 19 is wound in the reverse direction and further fed out. As a result, the first slope plate 16 and the second slope plate 17 are pulled by the wire 19 and are developed in the direction from the overlapping position to the lying down position by its own weight.
[0016]
Next, an electric circuit for starting the left and right tailgate motors M11 and M12 of the first slope drive mechanism will be described with reference to FIGS. Hereinafter, the tailgate motors M11 and M12 will be referred to as motors M11 and M12.
The electric circuit is a DC 12V circuit, and includes a changeover switch SW and four relays R1, R2, R3, and R4. A DC motor is used for the motor M11 and the motor M12.
[0017]
The change-over switch SW is configured to be switchable to three positions of standing, neutral C, and lying down, and is held at the neutral position C with the hand released. When the changeover switch SW is operated to the upright side (see FIG. 2), the coil of the relay R1 is excited and the contact of the relay R1 is switched to the ON side. At this time, since the coils of the relays R2, R3, and R4 are de-excited, the contacts of the relays R2, R3, and R4 are switched to the OFF side.
[0018]
When the changeover switch SW is operated to the lodging side (see FIG. 3), the coils of the relays R2, R3, R4 are excited, and the contacts of the relays R2, R3, R4 are switched to the ON side. At this time, since the coil of the relay R1 is de-excited, the contact of the relay R1 is switched to the OFF side.
When the changeover switch SW is in the neutral position C, the coils of the relays R1, R2, R3, and R4 are de-energized, so that the contacts of the relays R1, R2, R3, and R4 are switched to the OFF side.
[0019]
As shown in FIG. 2, the contact ON terminal of the relay R1 is connected to the 12V line of the power supply, and the OFF terminal is connected to the 0V line of the power supply. The C terminal (common terminal) of the contact of the relay R1 is connected to the T1 terminal of the motor M12 and the OFF terminal of the contact of the relay R3. The contact ON terminal of the relay R3 is connected to the contact ON terminal of the relay R4, and the contact C terminal of the relay R3 is connected to the T1 terminal of the motor M11. The T2 terminal of the motor M12 is connected to the C terminal of the contact of the relay R4, and the OFF terminal of the contact of the relay R4 is connected to the C terminal of the contact of the relay R2. Further, the T2 terminal of the motor M11 is connected to the C terminal of the contact of the relay R2, the ON terminal of the contact of the relay R2 is connected to the 12V line of the power supply, and the OFF terminal is connected to the 0V line of the power supply.
[0020]
With the above configuration, as shown in FIG. 2, when the changeover switch SW is operated to the upright side, the coil of the relay R1 is excited, the contact of the relay R1 is ON, and the contacts of the relays R2, R3, R4 are OFF. Is switched to. Thus, the motors M11 and M12 are connected in parallel, and a voltage (approximately 12V) equal to the power supply voltage is applied to each of the motors M11 and M12. In each motor M11, M12, a current flows from the terminal T1 side to the terminal T2 side (see arrow), and the motors M11, M12 are driven to rotate forward.
[0021]
Further, as shown in FIG. 3, when the changeover switch SW is operated to the lodging side, the coils of the relays R2, R3, R4 are excited, the contacts of the relays R2, R3, R4 are ON, and the contacts of the relay R1 are It is switched to the OFF side. Thus, the motors M11 and M12 are connected in series, and a voltage (about 6V) substantially equal to the power supply voltage (about 12V) / the number of motors (two) is applied to each of the motors M11 and M12. In each motor M11, M12, a current flows from the terminal T2 side to the terminal T1 side (see arrow), and the motors M11, M12 are driven in reverse.
[0022]
When the changeover switch SW is held at the neutral position C, the contacts of the relays R1, R2, R3, and R4 are held on the OFF side, so that the terminals T1 and T2 of the motors M11 and M12 are connected to the 0V line of the power source. The motors M11 and M12 are connected and stopped.
[0023]
Next, the operation of the above-described vehicle slope device 10 will be described with reference to FIGS.
First, when using the slope device 10 as a slope of a wheelchair or the like, the changeover switch SW is operated to the lodging side (see step 101). As a result, as shown in FIG. 3, the motors M11 and M12 are connected in series, and a voltage (approximately 6V) substantially equal to the power supply voltage divided by the number of motors is applied to each of the motors M11 and M12. In each motor M11, M12, a current flows from the terminal T2 side to the terminal T1 side (see arrows), and the motors M11, M12 are driven in reverse (see step 102).
[0024]
When the motors M11 and M12 are driven in reverse, the rotating arm 14 shown in FIG. 4 is rotated downward, and the tailgate 12 is rotated from the standing position to the lying down direction with almost its own weight. At this time, since the applied voltage of the motors M11 and M12 is about 6V, the mechanical outputs of the motors M11 and M12 are reduced as compared with the case of driving at the rated voltage (12V). For this reason, the rotational speed of the tailgate 12 is significantly reduced as compared with the case where the applied voltages of the motors M11 and M12 are driven at approximately 12V. Therefore, even if the weight of the tailgate 12 or the like is applied in the lodging direction, the rotational speed of the tailgate 12 does not become faster than the appropriate speed.
[0025]
In this way, as shown in FIG. 4D, the tailgate 12 is rotated to the fall position (lower limit position) that can be used as a slope (see step 104), for example, a limit not shown. The switch operates and the motors M11 and M12 are stopped.
Next, the slope plate motor M2 is driven in reverse by the action of an electric circuit (not shown), whereby the first slope board 16 and the second slope board 17 are tailgateed by the action of the main pulley 18 and the wire 19. 12 is developed in the lodging direction from the overlapping position overlapping 12 (see FIG. 4C). Then, the slope plate motor M2 stops in a state where the first slope plate 16 and the second slope plate 17 are arranged on the extension line of the tailgate 12. In this state, the slope device 10 can be used as a slope for a wheelchair or the like.
[0026]
Next, when the tail gate 12 is erected by folding the first slope plate 16 and the second slope plate 17, the changeover switch SW is operated to the erection side (see step 201). As a result, the slope plate motor M2 is driven to rotate forward by the action of an electric circuit not shown, and the first slope board 16 and the second slope board 17 are moved from the lying down position by the action of the main pulley 18 and the wire 19. The gate 12 is folded in the direction of the overlapping position. In addition, while the slope plate motor M2 is driven in the normal direction, the driving of the motors M11 and M12 is prohibited.
As described above, when the changeover switch SW is operated to the upright side, the motors M11 and M12 are connected in parallel as shown in FIG.
[0027]
When the slope plate motor M2 is stopped, a voltage (about 12V) substantially equal to the power supply voltage is applied to each of the motors M11 and M12, and a current flows from the terminal T1 side to the terminal T2 side (see arrows). M11 and M12 are driven forward (see step 202).
When the motors M11 and M12 are driven to rotate forward, the rotating arm 14 is rotated upward, and the tailgate 12 is pulled by the rotating arm 14 and the link arm 13 to rotate in the standing direction from the lying position. At this time, since the applied voltage of the motors M11 and M12 is about 12V (rated voltage), the mechanical outputs of the motors M11 and M12 increase compared to the case of driving at about 6V. For this reason, even if the weights of the tailgate 12 and the first slope plate 16 are applied in the lodging direction, the rotation speed of the tailgate 12 can be maintained at an appropriate speed.
[0028]
In this way, the tailgate 12, the first slope plate 16, and the second slope plate 17 are rotated to the standing position (upper limit position) for closing the lower opening 5 (see step 204), for example, as shown in the figure. No limit switch is activated and the motors M11 and M12 are stopped. In this state, the slope device 10 is stored in the rear part of the van type vehicle 2.
[0029]
Thus, according to the first slope drive mechanism according to the present embodiment, the rotation speed when rotating the slope member (tail gate 12) in the lying down direction is the rotation speed when rotating the slope member in the standing direction. The applied voltage of the motors M11 and M12 when the slope member is rotated in the inclining direction is set to be smaller than the applied voltage of the motors M11 and M12 when the slope member is rotated in the standing direction so as not to exceed the moving speed. Has been. For this reason, when the rotation speed of the slope member in the standing direction is an appropriate speed, the rotation speed of the slope member in the lying down direction does not become faster than the appropriate speed.
[0030]
The first slope drive mechanism includes two motors M11 and M12. The voltage applied to the motors M11 and M12 when the slope member (tailgate 12) is rotated in the lying down direction is the power supply voltage of the motor. It is almost equal to the value divided by the number. Further, the applied voltages of the motors M11 and M12 when the slope member is rotated in the standing direction are substantially equal to the power supply voltage. As described above, since the motors M11 and M12 are connected in parallel or in series and the applied voltages of the motors M11 and M12 are changed, for example, compared with the case where voltage control is performed using a computer or the like. Cost reduction can be achieved.
[0031]
In the present embodiment, the motors M11 and M12 are connected in parallel or in series to change the voltages applied to the motors M11 and M12. For example, the power line and the motors M11 and M12 are changed. It is also possible to change the voltage applied to each of the motors M11 and M12 by inserting a resistor between them and removing the resistor.
Moreover, although this embodiment demonstrated the slope apparatus 10 provided with the tail gate 12, the 1st slope board 16, and the 2nd slope board 17 as an example, it may apply this invention to the slope apparatus provided only with a tail gate. Is possible.
[0032]
(Embodiment 2)
Hereinafter, based on FIGS. 5-8, the slope drive mechanism of the vehicle which concerns on Embodiment 2 of this invention is demonstrated. FIG. 5 is a perspective view showing an outline of a rear portion of the vehicle provided with the slope device 110 according to the present embodiment. 6 and 7 are side sectional views showing details of the rear part of the vehicle equipped with the slope device 110. FIG. 6 shows the storage state of the slope plate 111, and FIG. 7 shows the use of the slope plate 111. The state is shown. As shown in FIG. 5, an opening 102 is formed in the rear portion of the vehicle body 101. The upper part of the opening 102 can be opened and closed by the upper door 103, and the lower part can be opened and closed by the lower door 104. The upper door 103 is pivotally attached to the upper edge of the opening 102 via a door hinge (not shown), and the lower door 104 is attached to the lower edge of the opening 102 with left and right door hinges 105 (see FIGS. 6 and 7). It is attached so that it can rotate in the up-down direction via.
[0033]
As shown in FIG. 6, the upper door 103 is closed by rotating downward with the lower door 104 closed. At that time, the front surface of the lower edge portion of the upper door 103 is closed so as to overlap the rear surface of the upper edge portion of the lower door 104, and the doors are locked by the door lock 107. A rear bumper 106 is attached below the upper door 103 via a bracket (not shown), and the rear bumper 106 is positioned on the rear surface of the lower door 104 when the door is closed.
A hinge pin 105 a of the door hinge 105 that constitutes the rotation center of the lower door 104 is provided at the lower rear end of the vehicle floor F. Therefore, when the lower door 104 is rotated upward, as shown in FIG. 6, the lower door 104 stands up above the upper surface of the rear end of the vehicle floor F, closes the lower portion of the opening 102, and rotates downward (rearward). When the lower portion of the opening 102 is opened, the door inner surface (upper surface) is moved to a position lower than the height of the upper surface of the vehicle floor F as shown in FIG.
[0034]
The slope device 110 according to the present embodiment is provided at the lower part of the opening 102 opened and closed by the upper and lower doors 103 and 104. Details of the slope device 110 are shown in FIGS. 6, 7 and 8. FIG. 8 is a perspective view of the slope device 110, and most of the drive device 120 is omitted. The slope device 110 has a retracted position standing in the vehicle compartment shown in FIG. 6 and a use position (falling position) spanned between the lower edge of the opening 102 and the road surface G shown in FIG. It has one slope board 111 rotated between them.
[0035]
When the lower door 104 is in a position to close the opening 102, the slope plate 111 is stored in a standing state in front of the lower door 104, that is, above the rear end of the vehicle floor F. The slope plate 111 is attached so that the base end side (lower end side) of the left and right side plates 111a can be rotated via the left and right slope hinges 112 to the lower front side of the lower door 104 in the standing state. The slope hinge 112 is attached across the side plate 104 a of the lower door 104 and the side plate 111 a of the slope plate 111, and the hinge pin 112 a is set slightly forward of the lower door 104. For this reason, when the lower door 104 is rotated from the position for closing the opening 102 to the opening position with the hinge pin 105a of the door hinge 105 as the rotation center, the slope plate 111 attached to the lower door 104 is moved from the retracted position to the lying position. It is rotated. And when it rotates to a fall position, while the base end part of the slope board 111 moves to the back of the rear-end edge of the vehicle floor F, it is comprised so that the upper surface may become flush with the upper surface of the vehicle floor F. ing.
[0036]
The rotation operation of the slope plate 111 and the lower door 104 is performed by the left and right drive devices 120. The left and right drive devices 120 have the same configuration, and each includes an electric motor 121 with a speed reducer, a drive gear 122, a drive arm 123, and a connecting arm 124 as a drive source installed in the vehicle interior. I have. A small-diameter pinion gear 125 is attached to the output shaft of the electric motor 121 (reduction gear), and the drive gear 122 meshes with the pinion gear 125. That is, the electric motor 121 of both the drive devices 120 corresponds to the motors M11 and M12 according to the first embodiment, and is driven by the same electric circuit as that shown in FIGS.
[0037]
As shown in the figure, the drive gear 122 has teeth formed over a range of about 190 degrees on the outer periphery thereof. Therefore, the drive gear 122 rotates within a range of about 190 degrees. The drive gear 122 is formed with a drive arm 123 extending radially outwardly, and one end of a connection arm 124 is rotatably connected to the tip of the drive arm 123 via a support shaft 124a. The connecting arm 124 extends in the vehicle front-rear direction, the other end is rotatably connected to the side plate 104a of the lower door 104 via a support shaft 124b, and the intermediate portion is engaged with the engaging pin 124c and the engaging pin 124c. Is connected to the slope plate 111 via a movable long hole 111b. The engaging pin 124 c is fixed to the connecting arm 124 side, and the long hole 111 b is formed in the left and right side plates 111 a of the slope plate 111.
[0038]
The long hole 111b extends along the longitudinal direction of the side plate 111a, and intersects the extending direction of the connecting arm 124 at a predetermined angle when the slope plate 111 is in the retracted position. As a result, when the lower door 104 is rotated between the closed position and the open position, and the slope plate 111 is accordingly rotated between the retracted position and the use position, the engagement pin 124c is moved in the elongated hole 111b. As a result of the movement, the change in the distance between the long hole 111b and the engaging pin 124c is absorbed, and the rotational angle of the lower door 104 and the rotational angle of the slope plate 111 differ depending on the shape of the long hole 111b. In other words, the positional relationship between the lower door 104 and the slope plate 111 can be different between the opened state and the closed state. In this embodiment, the slope plate 111 is in the retracted position with respect to the lower door 104. It is set as the structure which leaves | separates and approaches in the lodging position.
[0039]
Of the drive device 120, the electric motor 121, the drive gear 122, and the drive arm 123 are housed in a space between the inner panel and the outer panel on the side of the vehicle. 124 is arranged in the passenger compartment. Therefore, the support shaft 124a for connecting the drive arm 123 and the connecting arm 124 extends through the opening 108 formed in the inner panel and the lining trim. The hinge pin 112a of the slope hinge 112 that constitutes the rotation center of the slope plate 111 is intermediate between the hinge pin 105a of the door hinge 105 that rotatably supports the lower door 104 and the connection portion of the connection arm 124 with respect to the slope plate 111. Set to position.
[0040]
The slope device 110 according to the present embodiment is configured as described above. Accordingly, when the electric motor 121 is driven in the reverse direction in a state where the upper door 103 is pivoted upward and the upper portion of the opening 102 is opened, the vehicle rearward of the connecting arm 124 due to the clockwise rotation of the drive gear 122 shown in the figure. The lower door 104 is rotated from the closed position to the open position, and the slope plate 111 is rotated from the retracted position to the lying down position. As shown in FIG. 7, the slope plate 111 rotated to the lying position is stretched between the lower edge of the opening 102 and the road surface G in an inclined manner. Thus, for example, an occupant sitting in a wheelchair can get into the vehicle compartment from the road surface G via the slope plate 111.
[0041]
In FIG. 6, the vehicle floor F is horizontal, whereas in FIG. 7, the vehicle floor F is inclined. This shows a case where the slope device 110 according to the present embodiment is applied to a vehicle having a function capable of lowering the vehicle height on the rear side of the vehicle body. When the vehicle floor F is tilted by lowering the vehicle height at the rear of the vehicle body by the lowering function of the rear part of the vehicle body, the road surface of the slope plate 111 is compared to that applied to a vehicle having no lowering function of the rear part of the vehicle body (the vehicle floor F is horizontal). Since the inclination angle with respect to G, that is, the slope angle θ can be further reduced, the boarding / exiting performance is further improved.
On the other hand, when the electric motor 121 is driven to rotate in the forward direction, the lower door 104 is rotated from the open position to the closed position by the movement of the connecting arm 124 forward of the vehicle due to the rotation of the drive gear 122 in the counterclockwise direction shown in the drawing. At the same time, the slope plate 111 is rotated from the use position to the storage position in the passenger compartment.
[0042]
Also in the present embodiment, the slope member is arranged so that the rotation speed when rotating the slope member (slope plate 111) in the lying down direction is not greater than the rotation speed when rotating the slope member in the standing direction. The applied voltage of the motors M11 and M12 when rotating in the lying down direction is set smaller than the applied voltage of the motors M11 and M12 when rotating the slope member in the standing direction. For this reason, when the rotation speed of the slope member in the standing direction is an appropriate speed, the rotation speed of the slope member in the lying down direction does not become faster than the appropriate speed.
[0043]
【The invention's effect】
According to the present invention, when the rotation speed of the slope member in the standing direction is an appropriate speed, the rotation speed of the slope member in the lying down direction does not become faster than the appropriate speed.
[Brief description of the drawings]
FIG. 1 is a flowchart showing an operation of a vehicle slope drive mechanism according to a first embodiment of the present invention.
FIG. 2 is an electric circuit diagram of a slope driving mechanism.
FIG. 3 is an electric circuit diagram of a slope driving mechanism.
FIG. 4 is an overall perspective view of the vehicle slope device (FIG. A) and side views (B, C, D) illustrating the operation of the slope device.
FIG. 5 is a perspective view schematically showing a rear portion of a vehicle including a vehicle slope device according to a second embodiment of the present invention.
FIG. 6 is a side sectional view showing details of a rear portion of the vehicle including the slope device, and shows a retracted state of the slope plate.
FIG. 7 is a side sectional view showing details of a rear portion of a vehicle including a slope device, and shows a use state of a slope plate.
FIG. 8 is a perspective view of a slope device.
FIG. 9 is an electric circuit diagram of a conventional slope drive mechanism.
[Explanation of symbols]
M11 Tailgate motor (electric motor)
M12 Tailgate motor (electric motor)
M2 slope plate motor
5 Lower opening (opening)
12 Tailgate (slope member)
16 First slope plate
17 Second slope plate
111 Slope plate (slope member)
121 Electric motor with reduction gear (electric motor)

Claims (2)

An upper limit position where a slope member connected to a lower end edge of a vehicle opening portion in a state where the base end portion is rotatable is raised, and a lower limit position where the slope member is laid down so that it can be used as a slope. A vehicle slope drive mechanism that rotates between
An electric motor as a drive source ;
The electric circuit of the electric motor is configured, and has a changeover switch for starting the electric motor in the standing direction of the slope member or in the lying down direction,
The applied voltage of the electric motor when the changeover switch is operated in the inclining direction of the slope member is made smaller than the applied voltage of the electric motor when the changeover switch is operated in the standing direction of the slope member , A slope drive mechanism for a vehicle, characterized in that a rotation speed when rotating the slope member in a lying down direction is not greater than a rotation speed when rotating the slope member in a standing direction. The vehicle slope drive mechanism according to claim 1,
Equipped with multiple electric motors,
When rotating the slope member in the lying down direction, the electric motors are connected to the power source in a state of being electrically connected in series,
A slope drive mechanism for a vehicle, wherein when the slope member is rotated in a standing direction, the electric motors are connected to a power source in a state of being electrically connected in parallel.

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