JP2014091479A - Vehicle height adjustment device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technique capable of stabilizing the parking attitude even with such a configuration that the vehicle height is lower during parking than during running.SOLUTION: A vehicle height adjustment device includes a relative position changing device 100 capable of changing the relative position of the vehicle body frame to the rear wheel 21 of a two-wheeled motor vehicle and a controller controlling the relative position changing device 100 so as to adjust the height of the vehicle body frame, i.e. the vehicle height, by changing the relative position of the vehicle body frame to the rear wheel. The controller decreases the vehicle height when the two-wheeled motor vehicle stopped, compared with the vehicle height during running, and increases the vehicle height when the two-wheeled motor vehicle is parked, compared with the vehicle height during stopping.

Description

  The present invention relates to a vehicle height adjusting device.

In recent years, a device has been proposed that raises the vehicle height during traveling of a motorcycle and lowers the vehicle height to facilitate getting on and off when the vehicle is stopped.
For example, the vehicle height adjusting device described in Patent Document 1 automatically changes the vehicle height in response to the vehicle speed of the motorcycle, and automatically increases the vehicle height when the vehicle speed reaches the set speed. The vehicle height is automatically lowered when the speed is lower than the set speed.

Japanese Patent Publication No. 8-22680

When the vehicle height is changed according to the vehicle speed of the motorcycle, the vehicle height is lowered when the motorcycle is stopped, so that the vehicle height is low when the motorcycle is parked. When a motorcycle is parked using a side stand in a state where the vehicle height is low, the center of gravity of the motorcycle is low, so that the vehicle is more upright. For this reason, there is a risk that the stability of the posture of the motorcycle when it is parked is lowered.
An object of the present invention is to provide a vehicle height adjusting device that can stabilize the posture at the time of parking even in a configuration in which the vehicle height is lower than when traveling when the vehicle is stopped.

  For this purpose, the present invention changes the relative position between the vehicle main body and the wheel by changing the relative position between the vehicle main body and the wheel of the vehicle and controlling the changing means. Control means for adjusting the vehicle height, which is the height of the vehicle body, so that the control means is more effective when the vehicle is stopped than when the vehicle is running. The vehicle height adjusting device is characterized in that the height is lowered and the vehicle height is increased when the vehicle is parked compared to when the vehicle is parked.

Here, the vehicle is provided with a detection unit that is provided in the vehicle and detects movement of a vehicle main body support member that supports the vehicle main body when the vehicle is parked. The control unit is configured to detect the vehicle based on a detection result of the detection unit. It is good to judge whether you are parked.
Further, the control means is configured such that the ignition switch of the vehicle is turned off, and the vehicle speed, which is the moving speed of the vehicle, is smaller than a predetermined parking vehicle speed, and the detection means is configured such that the vehicle body support member is the vehicle If it is detected that the vehicle is in the open state protruding from the main body, it may be determined that the vehicle is parked.

  Further, the control means makes the vehicle height lower when the vehicle speed, which is the moving speed of the vehicle, is lower than when the vehicle speed is high, and sets the vehicle height when the vehicle is parked. It is better to make it higher than when the vehicle speed is low.

  According to the present invention, the posture at the time of parking can be stabilized even with a configuration in which the vehicle height is lower than when traveling when the vehicle is stopped.

1 is a diagram showing a schematic configuration of a motorcycle according to an embodiment. It is the schematic of a relative position change apparatus. It is a figure which shows the state of a relative position change apparatus when a vehicle height is the highest. It is a block diagram of a control apparatus. It is a flowchart which shows the procedure of the basic drive control process of the drive motor which a drive control part performs. It is a flowchart which shows the procedure of the process at the time of starting which a drive control part performs.

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings.
FIG. 1 is a diagram showing a schematic configuration of a motorcycle 1 according to an embodiment.
As shown in FIG. 1, the motorcycle 1 includes a vehicle body frame 11, a head pipe 12 attached to the front end of the vehicle body frame 11, a front fork 13 provided on the head pipe 12, and the front fork. 13 and a front wheel 14 attached to the lower end of 13.
The motorcycle 1 also includes a handle 15 attached to the upper portion of the front fork 13, a fuel tank 16 attached to the front upper portion of the vehicle body frame 11, an engine 17 and a transmission disposed below the fuel tank 16. 18.

The motorcycle 1 includes a seat 19 attached to the rear upper part of the body frame 11, a swing arm 20 attached to the lower part of the body frame 11 so as to be swingable, and a rear part attached to the rear end of the swing arm 20. A wheel 21 and a relative position changing device 100 as an example of changing means capable of changing the relative position of the vehicle body frame 11 (seat 19) and the rear wheel 21 are provided. The relative position changing device 100 will be described in detail later.
In addition, the motorcycle 1 includes a head lamp 23 disposed in front of the head pipe 12, a front fender 24 attached to the front fork 13 so as to cover the upper portion of the front wheel 14, and a tail lamp disposed behind the seat 19. 25, and a rear fender 26 attached below the tail lamp 25 so as to cover the upper portion of the rear wheel 21.

  The motorcycle 1 also has a side stand 28 as an example of a vehicle body support member that supports the body frame 11 and the like when the motorcycle 1 is parked. The side stand 28 is a rod-shaped member that can be opened and closed by rotating about a fulcrum provided at one end thereof as a rotation shaft. The side stand 28 projects outward from the vehicle body frame 11 in the open state, and the vehicle body in the closed state. It is configured to fit within the frame 11. Usually, when the motorcycle 1 is parked, the driver opens the side stand 28 and supports the vehicle body frame 11 and the like by the side stand 28 so that the motorcycle 1 is difficult to fall. On the other hand, when the motorcycle 1 is driven, the side stand 28 is closed.

The motorcycle 1 also includes a front wheel rotation detection sensor 31 that detects the rotation angle of the front wheel 14 and a rear wheel rotation detection sensor 32 that detects the rotation angle of the rear wheel 21. The motorcycle 1 also includes an open / close detection sensor 33 (see FIG. 4) as an example of a detection unit that detects opening / closing of the side stand 28. As the open / close detection sensor 33, an infrared reflection type reflection sensor or transmission type sensor having a light emitting element and a light receiving element, which receives pressure when the side stand 28 is in a closed state and receives no pressure when the side stand 28 is in an open state. It can be exemplified that the sensor is used.
The motorcycle 1 also includes a control device 50 as an example of a control unit that controls a vehicle height of the motorcycle 1 by controlling a drive motor 160 described later of the relative position changing device 100. The control device 50 receives output signals from the front wheel rotation detection sensor 31, the rear wheel rotation detection sensor 32, the open / close detection sensor 33, and the like described above.

Next, the relative position changing device 100 will be described in detail.
FIG. 2 is a schematic diagram of the relative position changing device 100.
The relative position changing device 100 includes a cushion unit 105 having a suspension spring 110 that supports the weight of the motorcycle 1 and absorbs an impact, and a damper 120 that attenuates vibration of the suspension spring 110. The cushion unit 105 is attached between the body frame 11 and the rear wheel 21 as an example of the vehicle body of the motorcycle 1. The damper 120 includes a damper main body 121 in which hydraulic oil is sealed, and an operation rod 122 that moves forward and backward with respect to the damper main body 121. The suspension spring 110 is attached between the damper main body 121 and the operating rod 122. Only one cushion unit 105 is provided at the center in the left-right direction of the body frame 11, and is attached in a substantially vertical direction in a posture inclined with respect to the ground.

  Further, the relative position changing device 100 includes a vehicle body side connecting member 130 that connects the body side end portion 121a that is an end portion of the damper main body 121 of the damper 120 on the vehicle body frame 11 side and the vehicle body frame 11, and an operating rod of the damper 120. 122 is provided with a link mechanism 140 that connects the rear wheel side end portion 122a, which is the end portion on the rear wheel 21 side, and the swing arm 20. That is, the relative position changing device 100 is attached to the vehicle body frame 11 via the vehicle body side connecting member 130 and attached to the swing arm 20 via the link mechanism 140.

The vehicle body side connecting member 130 is a substantially V-shaped member as shown in FIG. 2, and has a first arm 131 that is one side forming a V shape and a second arm 132 that is the other side. The tip of the first arm 131 is attached to the body-side end 121a of the damper 120, and the tip of the second arm 132 is attached to an operating rod 152 of a hydraulic jack 150 described later. A coupling portion 133 to which the respective base end portions of the first arm 131 and the second arm 132 are coupled is rotatably supported on the upper portion of the vehicle body frame 11.
The link mechanism 140 has a first member 141 having one end rotatably connected to the rear wheel side end portion 122a of the cushion unit 105 and the other end rotatably connected to the lower portion of the vehicle body frame 11, and one end of the link mechanism 140 is a first member. The first member 141 includes a pair of second members 142 that are rotatably connected to each other and the other end is attached to the swing arm 20.

  The relative position changing device 100 includes a hydraulic jack 150 that rotates the vehicle body side connecting member 130 with respect to the vehicle body frame 11, and a drive motor 160 that drives the hydraulic jack 150. The hydraulic jack 150 has a jack body 151 filled with oil and an operating rod 152 that moves forward and backward with respect to the jack body 151. The jack body 151 is attached to the vehicle body frame 11, and the tip of the operating rod 152 is It is attached to the tip of the second arm 132 of the vehicle body side connecting member 130.

  In the relative position changing device 100 configured as described above, when the hydraulic jack 150 is operated by driving the drive motor 160, the vehicle body side connecting member 130 is rotated by the forward and backward movement of the operating rod 152 relative to the jack body 151. Thereby, the main body side end 121a of the cushion unit 105 moves relative to the vehicle body frame 11, and the cushion unit 105 moves relative to the vehicle body frame 11. When the cushion unit 105 moves relative to the vehicle body frame 11, the swing arm 20 swings via the link mechanism 140, so that the vehicle body of the swing arm 20 when the cushion unit 105 is in an equilibrium state where the cushion unit 105 is not expanded and contracted. The position relative to the frame 11 changes. As a result, the vehicle height that is the position of the body frame 11 with respect to the road surface changes.

FIG. 3 is a diagram illustrating a state of the relative position changing device 100 when the vehicle height is the highest. FIG. 2 is also a diagram illustrating a state of the relative position changing device 100 when the vehicle height is the lowest.
As shown in FIG. 3, when the operation rod 152 of the hydraulic jack 150 is extended most with respect to the jack body 151 by the operation of the drive motor 160, the cushion unit 105 is positioned at the lowest position with respect to the vehicle body frame 11 and is balanced. The swing arm 20 in the state is held in a state where it swings most downward with respect to the vehicle body frame 11. As a result, the position of the body frame 11 with respect to the rear wheel 21 is increased, and the vehicle height of the motorcycle 1 is increased.

  On the other hand, as shown in FIG. 2, when the operation rod 152 of the hydraulic jack 150 is retracted most with respect to the jack body 151 by the operation of the drive motor 160, the cushion unit 105 is positioned at the uppermost position with respect to the body frame 11. The swing arm 20 in an equilibrium state is held in a state where it swings up most with respect to the vehicle body frame 11. As a result, the position of the body frame 11 with respect to the rear wheel 21 is lowered, and the vehicle height of the motorcycle 1 is lowered.

Next, the control device 50 will be described.
FIG. 4 is a block diagram of the control device 50.
The control device 50 includes a CPU, a ROM that stores programs executed by the CPU and various data, a RAM that is used as a working memory of the CPU, an EEPROM (Electrically Erasable & Programmable Read Only Memory), It has. The control device 50 receives output signals from the front wheel rotation detection sensor 31, the rear wheel rotation detection sensor 32, the open / close detection sensor 33, and the like described above.

  The control device 50 includes a front wheel rotation speed calculation unit 51 that calculates the rotation speed of the front wheel 14 based on an output signal from the front wheel rotation detection sensor 31, and an output signal from the rear wheel rotation detection sensor 32. A rear wheel rotation speed calculation unit 52 that calculates the rotation speed, and an ignition voltage detection unit 53 that detects an ignition switch voltage of the ignition switch 34 provided in the motorcycle 1 are provided. Each of the front wheel rotation speed calculation unit 51 and the rear wheel rotation speed calculation unit 52 grasps the rotation angle based on the pulse signal that is an output signal from the sensor, and calculates the rotation speed by differentiating it with the elapsed time. .

  Further, the control device 50 determines the movement speed of the motorcycle 1 based on the rotation speed of the front wheel 14 calculated by the front wheel rotation speed calculation unit 51 and / or the rotation speed of the rear wheel 21 calculated by the rear wheel rotation speed calculation unit 52. A vehicle speed grasping unit 56 for grasping a certain vehicle speed Vc is provided. The vehicle speed grasping unit 56 grasps the vehicle speed Vc by calculating the moving speed of the front wheel 14 or the rear wheel 21 using the front wheel rotational speed Rf or the rear wheel rotational speed Rr. The moving speed of the front wheel 14 can be calculated using the front wheel rotational speed Rf and the outer diameter of the tire of the front wheel 14, and the moving speed of the rear wheel 21 is calculated based on the rear wheel rotating speed Rr and the rear wheel 21 outside the tire. It is possible to calculate using the diameter. When the motorcycle 1 is traveling in a normal state, it can be understood that the vehicle speed Vc is equal to the moving speed of the front wheel 14 and / or the moving speed of the rear wheel 21. Further, the vehicle speed grasping unit 56 may grasp the vehicle speed Vc by calculating an average moving speed of the front wheels 14 and the rear wheels 21 using an average value of the front wheel rotational speed Rf and the rear wheel rotational speed Rr.

  Further, the control device 50 controls the drive of the drive motor 160 of the relative position changing device 100 based on the vehicle speed Vc grasped by the vehicle speed grasping unit 56, the ignition switch voltage detected by the ignition voltage detecting unit 53, and the like. 58. The drive control unit 58 normally operates while the motorcycle 1 is traveling in earnest (at a speed equal to or higher than the reference vehicle speed Vt (the reference vehicle speed Vt depends on the specification of the motorcycle 1. For example, 7 km / h)). Increases the vehicle height to improve the steering performance, and controls the driving of the drive motor 160 so as to lower the vehicle height in order to make getting on and off easier when it is considered that the passenger gets on and off.

  Moreover, the drive control part 58 controls the drive of the drive motor 160 so that vehicle height may be made high when the motorcycle 1 is parked. This is to stabilize the posture of the motorcycle 1 during parking by increasing the center of gravity of the motorcycle 1 during parking. The drive control unit 58 can exemplify that the ignition switch of the motorcycle 1 is OFF and the vehicle speed Vc is a predetermined parking determination vehicle speed Vp (the parking determination vehicle speed Vp is smaller than the reference vehicle speed Vt). For example, when the side stand 28 is in an open state, the motorcycle 1 is determined to be parked or will be parked, and the drive motor is set to increase the vehicle height. The driving of 160 is controlled. Then, when the vehicle height of the motorcycle 1 rises to a predetermined upper limit height, the drive control unit 58 stops driving the drive motor 160 and stops supplying power to the control device 50 itself. Below, the ignition switch, which is a condition for determining that the motorcycle 1 is parked or will be parked, is OFF, the vehicle speed Vc is lower than the parking determination vehicle speed Vp, and the side stand 28 is opened. This state is called parking conditions. The drive control unit 58 controls the drive of the drive motor 160 so as to increase the vehicle height when the parking condition is satisfied.

  On the other hand, when the ignition switch is turned on and the control device 50 is activated and the result of the initial diagnosis at the time of activation of each unit is that there is no abnormality, the drive control unit 58 determines that the vehicle speed Vc is When the vehicle speed is lower than the parking determination vehicle speed Vp and the side stand 28 is in the closed state, it is determined that the vehicle will get on to travel from now on, and the drive motor 160 is controlled to lower the vehicle height. In the following, it is a condition for determining to get on to travel from now on, that the ignition switch is ON, the vehicle speed Vc is smaller than the parking determination vehicle speed Vp, and the side stand 28 is in the closed state. Called. The drive control unit 58 controls the drive of the drive motor 160 so that the vehicle height is lowered when the parking release condition is satisfied.

Next, a procedure of basic drive control processing of the drive motor 160 performed by the drive control unit 58 will be described using a flowchart.
FIG. 5 is a flowchart showing a procedure of basic drive control processing of the drive motor 160 performed by the drive control unit 58. The drive control unit 58 repeatedly executes this basic drive control process every predetermined period.
First, the drive control unit 58 determines whether or not the ignition switch of the motorcycle 1 is ON (S501). This is a process for determining whether or not the ignition switch is ON by determining whether or not the ignition switch voltage detected by the ignition voltage detecting unit 53 is smaller than a predetermined reference voltage. When the switch voltage is equal to or higher than the reference voltage, it is determined that the ignition switch is ON, and when the ignition voltage is lower than the reference voltage, it is determined that the ignition switch is OFF.

  If the ignition switch is ON (YES in S501), the drive control unit 58 acquires the vehicle speed Vc of the motorcycle 1 stored in the RAM (S502). Thereafter, it is determined whether or not the vehicle speed Vc acquired in S502 is equal to or higher than the reference vehicle speed Vt (S503). If the vehicle speed Vc is equal to or higher than the reference vehicle speed Vt (YES in S503), the drive motor 160 is driven to increase the vehicle height (S504). That is, the drive control unit 58 operates the drive motor 160 so that the operation rod 152 of the hydraulic jack 150 extends with respect to the jack body 151.

  Thereafter, it is determined whether or not the vehicle height has reached a preset upper limit height (S505). An example of determining whether the vehicle height has reached the upper limit height is as follows. In other words, when it is set that the vehicle height is raised until the operating rod 152 of the hydraulic jack 150 is in the most extended state with respect to the jack body 151, the vehicle height is the upper limit when the operating rod 152 is extended the most. Judge that the height has been reached. Alternatively, a lower limit detection sensor (not shown) that optically or mechanically detects the lower limit height of the cushion unit 105 relative to the vehicle body frame 11 is provided, and the vehicle height reaches the upper limit height when the lower limit detection sensor detects it. You may judge that you did.

Whether or not the operating rod 152 of the hydraulic jack 150 is in the most extended state with respect to the jack main body 151 indicates that the operating rod 152 has extended to the maximum position with respect to the vehicle body frame 11, for example, optically or mechanically. It is possible to exemplify determining that the operating rod 152 is in the most extended state when the maximum limit position sensor (not shown) is detected and the maximum limit position sensor detects it. Alternatively, for example, a clockwise direction limit position sensor (not a sensor) that optically or mechanically detects that the vehicle body side connecting member 130 has rotated to the limit position in the clockwise direction when viewed in FIG. It is possible to exemplify determining that the operating rod 152 is in the most extended state when the clockwise rotation direction limit position sensor detects.
If the vehicle height has reached the upper limit height (YES in S505), the control of the drive of the drive motor 160 to stop the vehicle height is stopped (S506). On the other hand, when the vehicle height has not reached the upper limit height (NO in S505), the processing after S501 is executed.

  On the other hand, when the vehicle speed Vc is not equal to or higher than the reference vehicle speed Vt (NO in S503), the drive motor 160 is driven so as to lower the vehicle height (S507). That is, the drive control unit 58 operates the drive motor 160 so that the operation rod 152 of the hydraulic jack 150 is contracted with respect to the jack body 151. Thereafter, it is determined whether or not the vehicle height has reached a preset lower limit height (S508). An example of determining whether or not the vehicle height has reached the lower limit height is as follows. That is, when it is set that the vehicle height is lowered until the operating rod 152 of the hydraulic jack 150 is in the most contracted state with respect to the jack body 151, the vehicle height is lower than the lower limit when the operating rod 152 is contracted most. Judge that the height has been reached. Alternatively, an upper limit detection sensor (not shown) that optically or mechanically detects the upper limit position of the cushion unit 105 with respect to the vehicle body frame 11 is provided, and the vehicle height reaches the lower limit height when the upper limit detection sensor detects it. You may judge.

Whether or not the operating rod 152 of the hydraulic jack 150 is most contracted with respect to the jack main body 151 is determined based on whether the operating rod 152 is contracted to the minimum position with respect to the vehicle body frame 11, for example, optically or mechanically. It is possible to exemplify determining that the operating rod 152 is in the most contracted state when a minimum limit position sensor (not shown) is provided for detection, and the minimum limit position sensor detects it. Alternatively, for example, a counterclockwise rotation direction limit position sensor that optically or mechanically detects that the vehicle body side connecting member 130 has rotated to the limit position in the counterclockwise rotation direction when viewed in FIG. (Not shown), and determining that the operating rod 152 is in the most contracted state when detected by the counterclockwise rotation direction limit position sensor can be exemplified.
If the vehicle height reaches the lower limit height (YES in S508), the control of the drive motor 160 to stop the vehicle height is stopped (S509). On the other hand, when the vehicle height has not reached the lower limit height (NO in S508), the processing after S501 is executed.

  On the other hand, when the ignition switch is not ON (NO in S501), the drive control unit 58 acquires the vehicle speed Vc stored in the RAM by reading it (S510). And it is discriminate | determined whether the vehicle speed Vc is smaller than the predetermined parking determination vehicle speed Vp mentioned above (S511). If the vehicle speed Vc is smaller than the parking determination vehicle speed Vp (YES in S511), it is determined whether or not the side stand 28 is in an open state (S512). This is a process of determining based on the output signal from the open / close detection sensor 33. If the side stand 28 is in the open state (YES in S512), since the parking condition described above is satisfied, the drive of the drive motor 160 is controlled to increase the vehicle height (S513). Thereafter, it is determined whether or not the vehicle height has reached the above-described upper limit height (S514). The method for determining whether or not the vehicle height has reached the upper limit height is as described above.

Then, when the vehicle height reaches the upper limit height (YES in S514), the drive of the drive motor 160 is controlled to increase the vehicle height (S515), and power is supplied to the control device 50 itself. The main switch of the control device 50 is turned OFF (S516). On the other hand, when the vehicle height has not reached the upper limit height (NO in S514), the processing after S501 is executed.
On the other hand, when the vehicle speed Vc is not smaller than the parking determination vehicle speed Vp (NO in S511), and when the side stand 28 is not in an open state (NO in S512), the processes after S503 are executed.

  As described above, the drive control unit 58 of the control device 50 performs the basic drive control process, so that the control device 50 increases the vehicle height and improves the steering performance while the motorcycle 1 is traveling in earnest. When it is thought that the passengers can get on and off, the ride height can be lowered to make getting on and off easier. Further, since the vehicle height is increased when the motorcycle 1 is parked, the posture of the motorcycle 1 at the time of parking can be stabilized. That is, according to the control device 50 according to the present embodiment, the posture at the time of parking can be stabilized even when the motorcycle 1 is stopped, even when the vehicle height is set lower than when traveling.

  The front wheel rotation speed calculation unit 51, the rear wheel rotation speed calculation unit 52, and the vehicle speed grasping unit 56 are each of the front wheel rotation speed Rf and the rear wheel at a cycle equal to or less than the cycle in which the drive control unit 58 executes the basic drive control process. The rotational speed Rr and the vehicle speed Vc are calculated and stored in the RAM. The reference vehicle speed Vt, the parking determination vehicle speed Vp, and the like are stored in advance in the ROM.

Next, the procedure of the startup process performed by the drive control unit 58 will be described using a flowchart.
FIG. 6 is a flowchart showing a procedure of start-up processing performed by the drive control unit 58. The drive control unit 58 executes this process when the ignition switch is turned on and the control device 50 is activated, and there is no abnormality as a result of initial diagnosis at the time of activation of each unit.

  First, the drive control unit 58 obtains the vehicle speed Vc stored in the RAM by reading it (S601), and determines whether or not the vehicle speed Vc is smaller than the above-described parking determination vehicle speed Vp (S602). If the vehicle speed Vc is smaller than the parking determination vehicle speed Vp (YES in S602), it is determined whether or not the side stand 28 is closed (S603). This is a process of determining based on the output signal from the open / close detection sensor 33. If the side stand 28 is in the closed state (YES in S603), since the parking release condition described above is satisfied, the drive of the drive motor 160 is controlled to lower the vehicle height (S604).

Thereafter, it is determined whether or not the vehicle height has reached a preset lower limit height (S605). Whether the vehicle height has reached the lower limit height is determined using the above-described method. If the vehicle height has reached the lower limit height (YES in S605), the control of the drive of the drive motor 160 to stop the vehicle height is stopped (S606). Then, the process proceeds to the basic drive control process described with reference to FIG. 5 (S607). On the other hand, when the vehicle height has not reached the lower limit height (NO in S605), the processing after S601 is executed. Also, when the side stand 28 is not in the closed state (NO in S603), the processes after S601 are executed.
On the other hand, when the vehicle speed Vc is not smaller than the parking determination vehicle speed Vp (NO in S602), that is, when the vehicle speed Vc is equal to or higher than the parking determination vehicle speed Vp, the process proceeds to the basic drive control process described with reference to FIG. S607).

  As described above, the drive control unit 58 of the control device 50 performs the start-up process so that the control device 50 increases the vehicle height when the motorcycle 1 is parked with the ignition switch turned off. Even if it is controlled, the vehicle height is lowered when it is considered that the ignition switch is turned on again and the occupant gets on and off. This makes it easier for passengers to get on and off.

  The front wheel rotation speed calculation unit 51, the rear wheel rotation speed calculation unit 52, and the vehicle speed grasping unit 56 have no abnormality as a result of initial diagnosis at the time of starting each part when the ignition switch is turned on and the control device 50 is started. In the case, the front wheel rotational speed Rf, the rear wheel rotational speed Rr and the vehicle speed Vc are started to be calculated and stored in the RAM.

  The parking condition described above may include that the pressure of the cushion unit 105 of the relative position changing device 100, for example, the pressure in the damper 120 is lower than a predetermined parking pressure. Or you may use the conditions that the pressure of the cushion unit 105 is lower than the predetermined parking pressure instead of the conditions that the side stand 28 is an open state in the parking conditions mentioned above. The fact that the pressure of the cushion unit 105 is lower than a predetermined parking pressure is because no one is on the motorcycle 1 and it is considered that the vehicle is parked.

DESCRIPTION OF SYMBOLS 1 ... Motorcycle, 11 ... Body frame, 21 ... Rear wheel, 28 ... Side stand, 33 ... Opening / closing detection sensor, 50 ... Control apparatus, 56 ... Vehicle speed grasping part, 58 ... Drive control part, 100 ... Relative position change apparatus, 105 ... Cushion unit, 110 ... Suspension spring, 120 ... Damper, 130 ... Vehicle body side connecting member, 140 ... Link mechanism, 150 ... Hydraulic jack, 160 ... Drive motor

Claims (4)

A change means capable of changing a relative position between the vehicle body and the wheel of the vehicle;
Control means for adjusting the vehicle height, which is the height of the vehicle main body, by changing the relative position between the vehicle main body and the wheels by controlling the changing means;
With
The control means makes the vehicle height lower when the vehicle is stopped than when the vehicle is traveling, and stops when the vehicle is parked. A vehicle height adjusting device characterized in that the vehicle height is increased as compared with the vehicle height. Provided with a detecting means for detecting movement of a vehicle main body supporting member provided in the vehicle and supporting the vehicle main body when the vehicle is parked;
The vehicle height adjusting device according to claim 1, wherein the control unit determines whether or not the vehicle is parked based on a detection result of the detection unit.   The control means is configured such that the ignition switch of the vehicle is turned off, and the vehicle speed, which is the moving speed of the vehicle, is smaller than a predetermined parking vehicle speed, and the detection means is configured such that the vehicle body support member is moved from the vehicle body. The vehicle height adjusting device according to claim 2, wherein the vehicle height is determined to be parked when it is detected that the vehicle is in the protruding open state.   The control means makes the vehicle height lower when the vehicle speed, which is the moving speed of the vehicle, is lower than when the vehicle speed is high, and sets the vehicle height when the vehicle is parked. 4. The vehicle height adjusting device according to claim 1, wherein the vehicle height adjusting device is higher than a case where the vehicle is small.

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