JP4707113B2 - Stand for motorcycle - Google Patents

Description

  The present invention relates to a motorcycle stand device, and more particularly, to a motorcycle stand device that can stand a vehicle body in a desired posture regardless of a road surface state.

  As a device that keeps the motorcycle self-sustaining when the vehicle is stopped, a main stand device that extends a support bar (stand) directly below the vehicle body to support the vehicle body in an almost upright state, and a stand that extends from the vehicle body frame to the lower left in the width direction of the vehicle body A side stand device is known.

  The side stand device tilts the vehicle body to the side on which the stand is provided (generally, the left side) so that it can stand on its own. There was a problem of being forced to work.

  With the main stand device, the car body can be almost upright, so there is little need to be careful about slipping off the load. However, in the main stand device, a large force is required to stand with the luggage loaded, and physical strength is required.

  Therefore, an auto stand device has been devised in which the main stand device is operated using mechanical power. Japanese Patent Application Laid-Open No. 2003-285784 discloses a two-wheeled vehicle stand device in which a stand is erected using the power of a starter motor for starting an engine. According to this apparatus, since the large power of the starter motor is used, the rear wheel can be easily lifted from the road surface and the vehicle body can be made independent.

Japanese Laid-Open Patent Publication No. 2001-260964 discloses a two-wheeled vehicle auto stand device that uses hydraulic or pneumatic cylinder power to raise the stand and uses an electric motor to retract the stand. .
JP 2003-285784 A JP 2001-260964 A

  Since the conventional auto stand devices described in Patent Documents 1 and 2 are implemented with respect to the main stand device, a motor or a hydraulic or pneumatic drive source that generates large power must be used. There was a possibility that the stand device would become a large scale. In addition, it is difficult for the main stand device to stand the vehicle body upright except on a horizontal road surface.

  On the other hand, the side stand device requires less power when automation is assumed, but supports the vehicle body on one side, so the strength of the stand must be increased. When the vehicle is stopped so that the side stand device is located on the valley side on an inclined road surface, the vehicle body must be reversed so that the side stand device is located on the left side, that is, on the mountain side. . Furthermore, the side stand cannot respond to the request to support the vehicle body upright due to its basic structure.

  An object of the present invention is to solve the above-mentioned problems of the prior art, and to provide a stand device for a motorcycle that can support the vehicle body upright regardless of the road surface condition and does not require a large amount of power to drive the stand. It is in.

  In order to achieve the above object, the present invention is arranged on the left and right sides of the vehicle body between the front wheels and the rear wheels, for example, swingably with a stand support shaft arranged extending in the vehicle body left-right direction as a pivot. A left stand and a right stand provided to be displaceable in the vertical direction, a left motor for driving the left stand to be displaced in the vertical direction, and a right motor for driving the right stand to be displaced in the vertical direction. The point has the first feature.

  In addition, the present invention has a second feature in that the left stand and the left motor, and the right stand and the right motor are arranged at the target positions in the width direction of the vehicle body of the two-wheeled vehicle.

  Further, the present invention includes, for example, a control unit that drives the left motor and the right motor in response to an operation of turning on a stand switch, and an inclination determination unit that determines whether the inclination angle of the vehicle body is a predetermined angle. And the control unit is configured to drive the left motor and the right motor to maintain the inclination angle of the vehicle body at the predetermined angle.

  Further, the present invention is configured such that the left stand and the right stand are lowered from the storage position and returned to the storage position, and the control unit is configured so that the left stand and the right stand are in the storage position. When the stand switch is turned on, the left motor and the right motor are driven in a direction to lower the left stand and the right stand from the storage position, and the left stand and the right stand are below the storage position. A fourth feature is that, when the stand switch is turned on sometimes, the left motor and the right motor are driven in a direction in which the left stand and the right stand are raised and returned to the storage position. is there.

  According to the present invention having the first feature, since the pair of left and right stands provided on the two-wheeled vehicle can be independently driven by the respective dedicated motors, the two-wheeled vehicle is erected while maintaining the arbitrarily set vehicle body inclination angle. be able to. For example, since the two-wheeled vehicle can be erected vertically, it is possible to improve the workability of loading and unloading the load on the loading platform.

  In addition, since the two-wheeled vehicle can be erected using the left and right stands while the wheels are grounded, a motor with a small output that can tilt the vehicle body can be used as a motor for driving the stands. Moreover, since the strength of the stand may be small, the weight can be reduced.

  According to the present invention having the second feature, the two-wheeled vehicle can be stably erected without the weight of the stand device being unevenly distributed in the width direction of the vehicle body.

  According to the present invention having the third feature, the left stand and the right stand can be driven so that the vehicle body is raised at a desired angle by the control unit.

  According to the present invention having the fourth feature, the stand can be raised and lowered between the storage position and the lower position by using the stand switch.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 2 is a side view showing a frame structure of a motorcycle provided with a motorcycle stand device according to an embodiment of the present invention. The frame of the motorcycle 1 is joined to the rear of the upper tube 3, the upper tube 3 that extends downward and rearward from the head pipe 2, the lower tube 4 that extends rearward and further downward from the upper tube 3, and somewhat. It consists of a seat tube 5 that extends upward and rearward, and a rear tube 6 that reinforces the seat tube 5 from below. The front ends of the upper tube 3 and the lower tube 4 are joined to the head pipe 2. Each tube 3, 4, 5, 6 is welded with stays 7, 8, 9, 10, etc. to give sufficient strength to maintain the shape of the frame. Each tube 3, 4, 5, 6 is provided in a pair of left and right in the vehicle width direction, and the left and right tubes are connected by a cross member (not shown).

  The upper tube 3 and the lower tube 4 are joined to each other at the rear, and a stand device bracket 11 extends rearward from the joined portion. A stand device 12 is attached to the frame of the vehicle body via the stand device bracket 11.

  A steering shaft 13 is vertically supported through the head pipe 2. A steering handle 16 that includes a mirror 14 and a grip 15 and extends to the left and right of the vehicle body is provided above the steering shaft 13. On the other hand, a front fork 17 is coupled to the lower portion of the steering shaft 13, and a front wheel 18 is pivotally supported on the front fork 17.

  A rear cushion 19 is suspended from the rear portion of the seat tube 5, and a lower portion of the rear cushion 19 is connected to a rear portion of a power unit (including an engine, a transmission, a speed reducer, etc.) not shown. The rear wheel 20 is supported by the power unit.

  A cowl or body cover 21 is attached to the frame to form the outer shape of the motorcycle 1. Further, the motorcycle 1 is equipped with an ECU (engine control device) (not shown) and a tilt sensor for detecting the left / right tilt of the vehicle body.

  FIG. 1 is a plan sectional view of the stand device 12, and FIG. 3 is a side sectional view of the stand device 12. In both figures, the stand device 12 has a main frame 22 extending in the vehicle width direction, two gear boxes 23 and 24 formed on the main frame 22, and an output shaft connected to the gear boxes 23 and 24, respectively. Motors 25, 26, a stand support shaft 29 serving as a rotation shaft of the final gear (worm wheel) 27 of the gear boxes 23, 24, a left stand 30 and a right stand 31. Note that the right worm wheel in the right gear box 24 is located below the worm gear 41 and is not shown, but is provided in the same manner as the worm wheel 27.

  Both sides of the main frame 22 are held by the vehicle body frame in a state of being sandwiched by a pair of left and right stand device brackets 11 joined to the rear portion of the lower tube 4 in the vehicle width direction. The stand support shaft 29 is supported at both ends by the main frame 22, and the tip penetrates the main stand device bracket 11.

  The stands 30 and 31 are fixed to arm portions 32A and 33A that protrude rearward from the sleeves 32 and 33 that penetrate the gear boxes 23 and 24 in the left-right direction of the vehicle body. The worm wheel 27 and the other worm wheel (not shown) are coupled to sleeves 32 and 33, respectively, and are rotatable about a stand support shaft 29 as a center of rotation.

  The motors 25 and 26 are mounted on the main frame 22 from the front of the vehicle body, and pinions 34 and 35 formed on the output shaft thereof are first stage gears (spur gears) 36 and 37 in the gear boxes 23 and 24, respectively. Is engaged. Worm gears 40 and 41 that mesh with the worm wheels 27 and 28 are integrally formed on the shafts 38 and 39 that support the first stage gears 36 and 37 (see FIG. 3 for the worm gear 40).

  Therefore, the output of the motor 25 is transmitted to the worm wheel 27 via the pinion 34 and the worm gear 40 to rotate the sleeve 32. On the other hand, the output of the motor 26 is transmitted to a worm wheel (not shown) via the pinion 35 and the worm gear 41 to rotate the sleeve 33.

  Cables 44 and 45 having connectors 42 and 43 are drawn out from the motors 25 and 26, and the connectors 42 and 43 are connected to a control unit (not shown). As will be described later, the control unit individually energizes the motors 25 and 26 to rotate the stands 30 and 31 independently of each other.

  In FIG. 3, the stand 30 (same for the stand 31) can be rotated in a range from a lower position indicated by a solid line to an upper position indicated by a two-dot chain line, and the motor 25 is energized to stand between the two positions. 30 is rotated. The rotation ranges of the stands 30 and 31 are set in advance so that the rear wheel 20 does not leave the road surface even when both the stands 30 and 31 are in the lower position. Since the motorcycle 1 does not leave the road surface even when the stands 30 and 31 are descending in this way, the motors 25 and 26 need only have a small output for driving the stands 30 and 31, A large output that lifts the rear wheel 20 from the ground is unnecessary.

  Next, the control unit will be described. FIG. 4 is a block diagram illustrating a system configuration of the control unit. The control unit 46 includes a stand switch 47, a limit switch 48, a tilt sensor 49, a tilt determination unit 50, a left motor drive unit 51, a right motor drive unit 52, a left landing detection unit 53, a right landing detection unit 54, and a motor control. A determination unit 55 is included. The inclination determination unit 50 and the motor control determination unit 55 can be configured by a microcomputer.

  The stand switch 47 is mounted, for example, in the vicinity of the grip 15 of the steering handle 16, and generates a trigger for lowering the stands 30 and 31 from the storage position or storing them in the storage position. The limit switch 48 is turned on when the stands 30 and 31 are at the storage position (upper limit position), and is turned off when the stands 30 and 31 are lowered from the storage position. The inclination sensor 49 detects the inclination angle of the motorcycle 1, and the inclination determination unit 50 determines whether the vehicle body is at a predetermined reference angle (for example, vertical ± α) based on the output of the inclination sensor 49.

  The left motor drive unit 51 supplies a drive signal to the left motor 25, and the right motor drive unit 52 supplies a drive signal to the right motor 26. Based on the currents of the left motor 25 and the right motor 26, the left landing detection unit 53 and the right landing detection unit 54 determine whether the stands 30 and 31 have landed depending on whether or not a load exceeding a predetermined value is applied to each motor. Detect whether or not. The motor current value serving as a reference for landing determination is set to a value smaller than the current value that is normally set in order to determine overload and protect the motor.

  The motor control determination unit 55 inputs a drive or stop instruction to the left motor drive unit 51 and the right motor drive unit 52 based on the detection results of the left landing detection unit 53 and the right landing detection unit 54.

  The left motor 25 and the right motor 26 can be driven only when the engine is stopped. When the stand switch 47 is pressed or the limit switch 48 is turned off, the running engine is stopped. Constitute. Further, the left motor driving unit 51 and the right motor driving unit 52 drive the left motor 25 and the right motor 26 so as to descend the stands 30 and 31 when the stand switch 47 is operated when the limit switch 48 is on. When the stand switch 47 is operated when the limit switch 48 is off, the left motor 25 and the right motor 26 are driven in a direction to return the stands 30 and 31 to the storage position.

  FIG. 5 is a flowchart showing an example of processing in the control unit 46 shown in FIG. The process of this flowchart is started when the stands 30 and 31 are in the retracted position, the limit switch 48 is on, and the stand switch 47 is on. In addition, the case where the vehicle body is stopped with the vehicle tilted to the left will be described.

  When the stand switch 47 is turned on, in step S1, it is determined whether or not the engine is stopped. If the engine is not stopped, the process proceeds to step S2 to stop the engine. In step S <b> 3, the left motor 25 and the right motor 26 are driven by the left motor driving unit 51 and the right motor driving unit 52. If it is determined in step S1 that the engine is stopped, step S2 is skipped and the process proceeds to step S3.

  In step S4, it is determined whether either the left stand 30 or the right stand 31 has landed by either the left landing detection unit 53 or the right landing detection unit 54. If it is determined that one of the stands has landed, the process proceeds to step S5, and the drive of the corresponding motor is stopped to stop the stand on the side that has not landed. In this example, since it is assumed that the vehicle body is inclined to the left, the left stand 30 has landed first. Therefore, the motor control determination unit 55 stops only the right motor 26, and the left motor 25 corrects the left inclination of the vehicle body, so that the left motor driving unit 51 and the right motor driving unit 52 are instructed to continue driving. .

  Since the left motor 25 continues to drive, the vehicle body is gradually raised to the upright side by the movement of the left stand 30.

  In step S6, the inclination determination unit 50 determines whether or not the inclination angle of the vehicle body has reached a reference inclination value (here, vertical ± α). If the inclination angle of the vehicle body is the inclination reference value, the process proceeds to step S7, and the operation of the landing side stand, that is, the left stand 30 here is stopped. That is, in this example, the left motor 25 is stopped.

  At this time, since both the stands have not landed, the motor of the stand that has not yet landed (that is, the right motor 26 for the right stand 31 in this example) is driven in step S8. In step S9, the right landing detector 54 determines whether or not the current of the motor driven in step S8 (that is, the right motor 26) has exceeded a predetermined value. If step S9 is affirmative and it is determined that the right stand 31 has landed, the motor is stopped in step S10, and the processing of this flowchart ends. By this processing, both the stands 30 and 31 can be landed with the vehicle body standing vertically.

  As described above, according to the present embodiment, the pair of left and right stands can be independently driven by a motor, and control can be performed so that the inclination of the vehicle body becomes a predetermined angle while the front and rear wheels are grounded. it can.

  In addition, although the inclination base value of the vehicle body is shown as vertical ± α (for example, α is 1 °) in order to improve workability when loading or unloading a load platform, Is not limited to this. An arbitrary angle can be set in advance in the inclination determination unit 50, and the two-wheeled vehicle can be erected at an arbitrary angle.

  FIG. 5 shows an example of the operation of the stand, but the operation is not limited to this, and various modifications can be made. In short, it is only necessary that the pair of stands can be independently driven by separate motors so that the two-wheeled vehicle can stand up at a predetermined angle in a state where both stands and the front and rear wheels are landed.

  Furthermore, the left and right stands are not limited to swinging with the support shaft as a pivot, but can be moved in and out of the storage position. The stands can be extended and retracted or moved up and down using a link mechanism, pinion rack mechanism, etc. It may be a thing to do. In the present invention, it is important to use the tilt sensor to individually drive the vehicle body to maintain a desired angle.

1 is a plan view of a motorcycle stand device according to an embodiment of the present invention. 1 is a side view showing a frame structure of a motorcycle including a motorcycle stand device according to an embodiment of the present invention. 1 is a side view of a motorcycle stand device according to an embodiment of the present invention. It is a block diagram which shows the system configuration | structure of a control part. It is a flowchart which shows the example of the process in a control part.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Motorcycle, 11 ... Bracket for stand attachment, 12 ... Stand apparatus, 23, 24 ... Gear box, 25 ... Left motor, 26 ... Right motor, 29 ... Stand support shaft, 46 ... Control part, 47 ... Stand switch, 48: Limit switch 49: Inclination sensor 50: Inclination determination unit 53: Left landing determination unit 54: Right landing determination unit 55: Motor control determination unit

Claims (6)

A left stand ( disposed between the front wheel (18) and the rear wheel (20) on the left and right sides of the vehicle body and provided so as to be independently rotatable and displaceable in the vertical direction about the rotation shaft (29)). 30) and the right stand (31) ;
A left motor (25) for rotationally driving the left stand (30) in a vertical direction;
A motorcycle stand device comprising a right motor (26) for rotationally driving the right stand (31) in a vertical direction. The left stand (30) and the left motor (25), and the right stand (31) and the right motor (26) are disposed at symmetrical positions in the width direction of the body of the two-wheeled vehicle. The motorcycle stand device described. A left stand ( disposed between the front wheel (18) and the rear wheel (20) on the left and right sides of the vehicle body and provided so as to be independently rotatable and displaceable in the vertical direction about the rotation shaft (29)). 30) and the right stand (31) ;
A left motor (25) for rotationally driving the left stand (30) in a vertical direction;
A right motor (26) for rotationally driving the right stand (31) in a vertical direction;
A controller (46) for driving the left motor (25) and the right motor (26) ;
An inclination determination unit (50) for determining whether the inclination angle of the vehicle body is a predetermined angle;
Two-wheeled vehicle stand, wherein the control unit (46) is configured to drive the left motor (25) and the right motor (26) to maintain the inclination angle of the vehicle body at the predetermined angle. apparatus. The two-wheeled vehicle according to claim 3, further comprising a stand switch (47) , wherein the control unit (46) is configured to start operation in response to an ON operation of the stand switch (47). Stand device. The left stand (30) and the right stand (31) are configured to descend from the storage position and return to the storage position.
When the stand switch (47) is turned on when the left stand (30) and the right stand (31) are in the retracted position, the control unit (46) is configured to turn the left stand ( 30) and the right stand. Driving the left motor (25) and the right motor (26) in a direction to lower (31) from the storage position;
When the left-stand (30) and the stand switch right stand (31) when in the retracted position below (47) is turned on, the left stand (30) and the storage position to the right stand (31) The two-wheeled vehicle stand device according to claim 4, wherein the left motor (25) and the right motor (26) are driven in a direction in which the left motor and the right motor are restored. The left stand (30) and the right stand (31) are provided so as to be swingable about a stand support shaft (29) arranged extending in the left-right direction of the vehicle body. The two-wheeled vehicle stand apparatus in any one of -5.

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