JP6355380B2 - Vehicle support - Google Patents

Description

  The present invention relates to a vehicle support for supporting a vehicle.

  Conventionally, there has been proposed a coaxial two-wheeled vehicle in which a passenger rides in a standing posture (see Patent Document 1). In a coaxial two-wheeled vehicle, the vehicle body is supported by a pair of coaxially arranged wheels, and a passenger is standing in a standing position on a step portion provided on the vehicle body while holding a handle portion of an operation lever provided on the vehicle body. Board. In a coaxial two-wheeled vehicle, when the vehicle body is tilted back and forth by moving the center of gravity of the passenger, the amount of rotation of the pair of wheels is controlled so that the posture of the vehicle body is maintained, and the vehicle moves forward and backward while maintaining the vehicle body posture. It is configured to be able to.

JP 2011-25888 A

  In a conventional coaxial two-wheeled vehicle, the vehicle body may tilt backward if the balance is not well achieved, and the vehicle may unintentionally travel backward due to control of each wheel. Since such behavior gives an uneasiness to the passenger, improvement is required.

  This invention is made | formed in view of such a subject, The objective is to provide the support tool which can ensure the safety at the time of boarding.

  The aspect with this invention for solving the above-mentioned subject is related with the support for vehicles. The vehicle support includes a first arm portion that is rotatably connected around a first axis provided on the vehicle body, and a second arm that is rotatably connected around a second axis provided on the first arm portion. And an urging member having one end connected to the arm unit and the other end connected to the vehicle body. The arm unit has a second arm portion grounded to a running surface on which the vehicle travels. It is movable by rotating around the first axis between a support position where the vehicle body is supported by the first arm part and a storage position where the second arm part is lifted from the running surface. When the arm unit moves toward the position side, the arm unit moves to the storage position by the urging force of the urging member when a specific position between the support position and the storage position is exceeded.

  According to the present invention, safety during boarding can be ensured.

It is a perspective view which shows the vehicle in which the vehicle support tool which concerns on 1st Embodiment is used. It is a functional block diagram which shows the control system of the vehicle which concerns on 1st Embodiment. It is a partial omission side view showing the state where the arm unit of the support for vehicles concerning a 1st embodiment exists in a support position. It is a rear view which shows the vehicle support tool which concerns on 1st Embodiment. It is a partial abbreviation side view showing the state where the arm unit of the support for vehicles concerning a 1st embodiment exists in a stowed position. It is a figure which shows typically the state which has the arm unit of the vehicle support tool which concerns on 1st Embodiment in a support position. It is a figure which shows typically the state which has the arm unit of the vehicle support tool which concerns on 1st Embodiment in a specific position. It is a figure which shows typically the state which has the arm unit of the vehicle support tool which concerns on 1st Embodiment in a storage position. It is a partial omission side view showing the state where the arm unit of the support for vehicles concerning a 2nd embodiment exists in a support position. It is a partial abbreviation side view showing the state where the arm unit of the support for vehicles concerning a 2nd embodiment exists in a storage position. It is a figure which shows typically the state which has the arm unit of the vehicle support tool which concerns on 2nd Embodiment in a support position. It is a figure which shows typically the state which has the arm unit of the vehicle support tool which concerns on 2nd Embodiment in a specific position. It is a figure which shows typically the state which has the arm unit of the vehicle support tool which concerns on 2nd Embodiment in a storage position.

[First Embodiment]
FIG. 1 is a perspective view showing a vehicle 100 in which the vehicle support 10 according to the first embodiment is used. Hereinafter, two directions orthogonal to each other are referred to as direction X and direction Y. The direction X corresponds to the front-rear direction of the vehicle 100, and the direction Y corresponds to the vehicle width direction of the vehicle 100.

  The vehicle 100 is a coaxial two-wheeled vehicle in which two wheels 120 are arranged on the same axis. The vehicle 100 includes a vehicle body 110, wheels 120, and an operation lever 130. The vehicle body 110 stores therein an attitude sensor 141, a control device 149, and the like which will be described later. The vehicle body 110 is provided with a pair of wheels 120 rotatably on the same axis on both sides in the vehicle width direction Y. When distinguishing each wheel 120, it is called wheels 120R and 120L.

  On the upper surface of the vehicle body 110, a pair of step portions 111 on which a passenger gets in a standing posture is provided. On the upper surface of the vehicle body 110, an operation lever 130 is provided in a standing state in front of the step portion 111. The operation lever 130 is provided so as to be tiltable about the X direction axis. A pair of handle portions 131 that are held by the passenger are provided at the upper end portion of the operation lever 130.

  The passenger gets on the step portion 111 in a standing posture while holding the handle portion 131. The passenger moves the center of gravity so that the vehicle body 110 tilts around the Y-direction axis together with the operation lever 130, or tilts the operation lever 130 around the X-direction axis, so that the vehicle 100 travels forward, backward, turns, etc. Perform the operation.

  FIG. 2 is a functional block diagram showing a control system of vehicle 100. The vehicle 100 includes an attitude sensor 141, a lever sensor 143, a drive circuit 145, a motor 147, and a control device 149.

  The posture sensor 141 includes a gyro sensor, an acceleration sensor, and the like. The attitude sensor 141 is built in the vehicle body 110 and detects a pitch angle, a pitch angular velocity, and the like of the vehicle body 110. The posture sensor 141 outputs the detected value to the control device 149.

  The lever sensor 143 is configured by a potentiometer or the like. The lever sensor 143 is provided at the lower end of the operation lever 130 and detects the rotation angle of the operation lever 130 around the X-direction axis. The lever sensor 143 outputs the detected value to the control device 149.

  The motor 147 is built in the vehicle 100 and is individually connected to the pair of wheels 120R and 120L. Drive circuit 145 is built in vehicle 100. The drive circuit 145 generates a drive signal based on the control signal from the control device 149, and outputs the drive signal to the motor 147. The motor 147 rotates the wheel 120 based on the drive signal.

  The control device 149 includes a travel control unit 151. The function of the control device 149 is realized by hardware such as a CPU and memory of a computer, and is realized by a program loaded in the memory as software.

  The travel control unit 151 calculates the forward and backward tilt directions of the operation lever 130 based on the pitch angle of the vehicle body 110 detected by the attitude sensor 141. Further, the traveling control unit 151 calculates a moving speed of the vehicle 100 that allows the vehicle 100 to travel while maintaining the posture of the vehicle body 110 based on the pitch angle, the pitch angular velocity, and the like of the vehicle body 110 detected by the posture sensor 141. The travel control unit 151 controls the amount of rotation of the wheels 120 by controlling the drive amount of the motor 147 via the drive circuit 145 so as to travel at the calculated moving speed toward the calculated tilt direction. In addition, the traveling control unit 151 controls the driving of the pair of motors 147 according to the detection value from the lever sensor 143, and causes a rotation difference between the pair of wheels 120. As a result, the vehicle 100 turns toward the left and right tilt directions of the operation lever 130.

  FIG. 3 is a partially omitted side view showing the configuration of the support 10. The support 10 is attached to the rear part of the vehicle body 110. The support 10 includes an arm unit 11 and a biasing member 13. The arm unit 11 is movable between a support position and a storage position. FIG. 3 shows a state where the arm unit 11 is in the support position.

  The arm unit 11 has a first arm portion 15 and a second arm portion 17. A bracket 113 as a long plate-like body that is long in the vertical direction is connected to the rear portion of the vehicle body 110. A first shaft 19 is provided below the bracket 113. The first arm portion 15 is configured as a plate-like long body that is long in one direction, and one end portion 15 a thereof is rotatably connected around the first shaft 19. A second shaft 21 is provided at the other end 15 b of the first arm portion 15.

  The second arm portion 17 is configured as a long plate-like body that is long in one direction, and an intermediate portion 17 a is rotatably connected around the second shaft 21. The second arm portion 17 is provided with a grounding portion 23 that is grounded to the traveling surface Ds on which the vehicle 100 travels on one side surface in the width direction. The grounding portion 23 is provided with a non-slip portion 25 with a serrated uneven shape along the longitudinal direction thereof.

  The biasing member 13 is a helical spring. The biasing member 13 has one end connected to the bracket 113 and the other end connected to the first arm portion 15.

  FIG. 4 is a rear view showing the configuration of the support 10. A plurality of arm units 11 are connected at an interval in the vehicle width direction Y of the vehicle body 110. The second arm portions 17 of the plurality of arm units 11 are connected by a connecting member 27 such as a bar. As shown in FIG. 3, the connecting member 27 is provided on each of the front end portion 17 b and the rear end portion 17 c of the second arm portion 17.

  When the arm unit 11 is in the support position, the grounding portion 23 of the second arm portion 17 is grounded to the traveling surface Ds, and the vehicle body 110 is supported by the second arm portion 17 and the first arm portion 15. At this time, the first arm portion 15 is provided so as to extend downward from the first shaft 19. The second arm portion 17 is provided along the traveling surface Ds, and the front end portion 17 b is provided in front of the second shaft 21. Further, in the second arm portion 17, the anti-slip portion 25 is grounded to the traveling surface Ds, and the grounding portion 23 is difficult to slide with respect to the traveling surface Ds.

  FIG. 5 shows a state where the arm unit 11 is in the storage position. The arm unit 11 moves from the support position to the storage position when the first arm portion 15 rotates in one direction P1 around the first shaft 19. Hereinafter, the one direction P1 is referred to as a forward direction P1, and the direction opposite to the one direction P1 is referred to as a reverse direction P2.

  When the arm unit 11 is in the storage position, the first arm portion 15 is provided so as to extend obliquely upward from the first shaft 19 and is held by the urging force of the urging member 13. The second shaft 21 is held at a higher position than when it is in the support position. The bracket 113 is provided with a rotation stopper 115 such as a protrusion on the side surface in the Y direction. Due to the engagement between the rotation stopper 115 and the first arm portion 15, it is possible to prevent the first arm portion 15 from rotating in the positive direction P <b> 1 larger than the storage position.

  When the arm unit 11 is in the storage position, the second arm portion 17 is held in a state where it is suspended and supported by the second shaft 21, and is floated from the traveling surface Ds. At this time, the second arm portion 17 is provided so that the second arm portion 17 rotates around the second shaft 21 when in the support position, and the front end portion 17b extends downward from the second shaft 21. In this state, the first arm portion 15 and the second arm portion 17 are held by the biasing force of the biasing member 13.

  Next, the effect of the support tool 10 according to the first embodiment will be described. FIG. 6 schematically shows a state where the arm unit 11 is in the support position. In the figure, the first shaft 19 and the second shaft 21 are indicated by white circles. Further, the connection portion 13a of the urging member 13 to the bracket 113 of the vehicle body 110 and the connection portion 13b of the urging member 13 to the first arm portion 15 of the arm unit 11 are indicated by black circles.

  The rotational moment around the axle 121 of the wheel 120 is transmitted from the first shaft 19 of the vehicle body 110 to the travel surface Ds via the first arm portion 15 and the second arm portion 17. A reaction force is transmitted from the traveling surface Ds to the first shaft 19 via the second arm portion 17 and the first arm portion 15, and the rotational moment is offset by the reaction force from the traveling surface Ds, so that the vehicle body 110 rotates backward. Be regulated. Further, the backward movement of the vehicle body 110 is also restricted by the reaction force transmitted from the travel surface Ds to the first shaft 19 via the second arm portion 17 and the first arm portion 15.

  FIG. 7 schematically shows a state when the vehicle 100 travels a predetermined travel distance L from a state where the arm unit 11 is in the support position. As the vehicle 100 travels, a force F1 is input forward from the first shaft 19 to the first arm portion 15, and a force F2 is input forward from the second shaft 21 to the second arm portion 17 by the force F1. Is done. At this time, since the frictional force F3 acts from the running surface Ds on the grounding portion of the second arm portion 17, particularly the front end portion 17b thereof, the force F2 causes the second arm portion 17 to rotate around the grounding portion, The first arm portion 15 rotates in the forward direction P1. At this time, even if the second arm portion 17 rotates around the grounding portion, as long as a part of the second arm portion 17 is grounded, the frictional force F3 acts on the grounding portion from the running surface Ds, and the first arm portion 15 Depending on the amount of forward travel of the vehicle 100, the amount of rotation in the positive direction P1 increases.

  In addition, since the anti-slip | skid part 25 is provided in the grounding location of the 2nd arm part 17, the 2nd arm part 17 becomes difficult to slip with respect to the running surface Ds, and when the vehicle 100 drive | works, the 2nd arm part 17 It becomes easy to reliably rotate around the ground contact point.

  Here, when viewed from the axial direction of the first shaft 19, an imaginary line connecting the connecting portions 13 a and 13 b on both ends of the biasing member 13 is defined as Li. When the arm unit 11 moves from the support position toward the storage position, the virtual line Li passes through a specific position overlapping the first shaft 19. In this specific position, when the arm unit 11 moves from the support position to the storage position, the urging member 13 reaches the maximum extension within the movement range.

  When the first arm portion 15 rotates to the storage position side (direction P2 side) from the specific position, the biasing member 13 biases the first arm portion 15 toward the storage position side. On the other hand, when the first arm portion 15 rotates from the specific position to the support position side (direction P1 side), the biasing member 13 biases the first arm portion 15 toward the support position side. Thus, when the arm unit 11 moves between the support position and the storage position, the biasing member 13 is directed from the direction in which the biasing direction is directed toward the support position to the storage position side with the specific position as a boundary. The direction is switched.

  FIG. 8 schematically shows a state where the arm unit 11 is in the storage position. If the 1st arm part 15 rotates until it exceeds a specific position from the state shown in FIG. 7, after that, the 1st arm part 15 will automatically move to a storage position with the urging | biasing force of the urging | biasing member 13.

  Here, when the arm unit 11 is in the support position, the support 10 is configured such that when the vehicle 100 travels a predetermined travel distance L, the first arm portion 15 rotates to a position exceeding the specific position. Adjusted. When the vehicle 100 travels a distance exceeding the travel distance L, the arm unit 11 automatically moves to the storage position. This adjustment is performed by adjusting the lengths of the arm portions 15 and 17 in the longitudinal direction and adjusting the positions of the connecting portions 13a and 13b of the urging member 13. The travel distance L is a distance at which the movement operation starts to stabilize after the vehicle 100 starts to travel, and the occurrence of a behavior in which the vehicle 100 moves backward unintentionally is controlled by the control of the wheel 120 when the passenger loses balance. Determined. This travel distance L is determined, for example, as a distance traveled by vehicle 100 when wheel 120 makes one revolution.

  In order to move the arm unit 11 in the storage position to the support position, the passenger can press down a part of the arm unit 11 with his / her foot or the like to ground the grounding portion 23 of the second arm portion 17 to the traveling surface Ds. That's fine. At this time, if the connecting member 27 as shown in FIG. 4 is pushed down, the plurality of arm units 11 can be simultaneously moved to the support position.

  According to the support 10 according to the above-described embodiment, the vehicle body 110 can be supported by the arm unit 11 at the support position when boarding the vehicle 100, and the vehicle body 110 can be prevented from rotating backward or backward. Therefore, when boarding the vehicle 100, the vehicle body 110 is tilted rearward and each wheel 120 is controlled, so that a situation in which the vehicle 100 travels rearward without the intention of the passenger can be suppressed. Thereby, the passenger's anxiety accompanying the backward running can be suppressed, and safety at the time of boarding can be secured.

  Further, when the vehicle 100 travels after boarding, the arm unit 11 is automatically moved to the storage position by the biasing member 13. This eliminates the need for the passenger to perform a special operation for switching from the support position to the storage position.

  In addition, when the vehicle 100 according to the present embodiment is supported by using a side stand of a two-wheeled bicycle, the grounding surface of the stand is lifted from the traveling surface Ds due to the rotation of the vehicle body 110 around the axle 121. Therefore, there is a problem that even when the vehicle body 110 is traveled, the frictional force does not act on the grounding surface of the stand from the travel surface Ds, and the stand cannot be automatically moved from the support position to the storage position.

  In this regard, according to the present embodiment, when the arm unit 11 is in the support position, even if the vehicle body 110 rotates around the axle 121, the second arm portion 17 rotates around the second shaft 21. A part can be kept grounded. If the vehicle body 110 is caused to travel in this state, the first arm portion 15 can be rotated to a specific position with the rotation of the second arm portion 17 around the ground contact point, and the arm unit 11 is moved to the storage position by the biasing member 13. Moved automatically. Therefore, even when used in a coaxial two-wheeled vehicle in which the vehicle body 110 rotates around the axle 121, the arm unit 11 can easily be reliably moved from the support position to the storage position.

  In addition, if the arm unit 11 is moved from the support position to the stowed position only by moving the posture of the vehicle body 110, the arm unit 11 is moved by the change in the posture of the vehicle body 110 immediately after the passenger has boarded. It moves to the storage position. In this case, the vehicle body 110 is not supported by the arm unit 11, and safety at the time of boarding cannot be sufficiently ensured. In this regard, according to the present embodiment, the arm unit 11 does not move to the storage position unless the vehicle body 110 travels to some extent. Therefore, the vehicle body 110 can be supported by the arm unit 11 until the vehicle travels, and safety during boarding can be improved. Enough can be secured.

  In addition, when it is attempted to suppress the backward rotation of the vehicle 100 immediately after boarding by control, it is necessary to determine whether the backward rotation of the vehicle body 110 is intended by the passenger. However, such a determination method has not been clarified so far, and there is a problem that it is difficult to mount on an existing vehicle. In this respect, according to the present embodiment, such a determination is not necessary and it can be easily attached to an existing vehicle.

[Second Embodiment]
FIG. 9 shows a support 10 according to the second embodiment. FIG. 9 shows a state where the arm unit 11 is in the support position. In the following embodiments, the same elements as those described in the first embodiment are denoted by the same reference numerals, and redundant descriptions are omitted.

  The first arm portion 15 includes a first link member 29, a second link member 31, and a rotation stopper 33. A plate-like bracket 113 is connected to the rear portion of the vehicle body 110 in a protruding state. A first shaft 19 is provided on the bracket 113. The first link member 29 is configured as a plate-like long body that is long in one direction, and one end portion 29 a of the first link member 29 is rotatably connected around the first shaft 19. An intermediate shaft 35 is provided at the other end 29 b of the first link member 29.

  The 2nd link member 31 is comprised as a plate-shaped elongate body long in one direction, The one end part 31a is connected with the intermediate shaft 35 so that rotation is possible. A second shaft 21 is provided at the other end 31 b of the second link member 31. The second link member 31 is provided with a rotation stopper 33 constituted by a protrusion or the like. The other end 31b of the second link member 31 is grounded to the travel surface Ds when the arm unit 11 is in the support position.

  The second arm portion 17 is rotatably connected around the second shaft 21. The second arm portion 17 is configured as a long plate-like body that is long in one direction, and the rear end portion 17 c is connected to the second shaft 21. The second arm portion 17 is provided with a grounding portion 23 that is grounded to the traveling surface Ds at the front end portion 17b. The grounding portion 23 is provided with a non-slip portion 25 made of a material having a high friction coefficient such as rubber.

  When the arm unit 11 is in the support position, the first link member 29 and the second link member 31 are arranged in series. At this time, the rotation of the second link member 31 in the forward direction P1 relative to the first link member 29 is restricted by the engagement of the rotation stopper 33 and the first link member 29, and the rotation in the reverse direction P2 is allowed.

  FIG. 10 shows a state when the arm unit 11 is in the storage position. At this time, the first link member 29 of the first arm portion 15 is provided so as to extend obliquely upward from the first shaft 19 and is held by the biasing force of the biasing member 13. The intermediate shaft 35 is held at a higher position than when it is at the support position, and the second shaft 21 is also held at a higher position than when it is at the support position. The second link member 31 is held while being suspended and supported by the intermediate shaft 35. The second link member 31 is provided so as to rotate in the reverse direction P2 around the intermediate shaft 35 and extend downward from the intermediate shaft 35 from the support position. The second arm portion 17 is provided such that a front end portion 17 b extends downward from the second shaft 21.

  FIG. 11 schematically shows a state where the arm unit 11 is in the support position. In the figure, the first shaft 19, the second shaft 21, and the intermediate shaft 35 are indicated by white circles. Moreover, the rotation stopper 33 is shown typically.

  The rotational moment around the axle 121 of the wheel 120 is canceled by the reaction force transmitted from the traveling surface Ds to the first shaft 19 via the second arm portion 17 and the first arm portion 15 as in the first embodiment. The backward rotation of 110 is restricted. Further, the backward movement of the vehicle body 110 is also restricted by the reaction force transmitted from the travel surface Ds to the first shaft 19. At this time, the rotation of the first link member 29 in the positive direction P <b> 1 with respect to the second link member 31 is restricted by the rotation stopper 33.

  FIG. 12 schematically shows a state when the vehicle 100 travels the travel distance L from a state where the arm unit 11 is at the support position. At this time, when the vehicle 100 travels, a force F1 is input from the first shaft 19 toward the first arm portion 15, and the force F2 is also applied forward from the second shaft 21 to the second arm portion 17 due to the force F1. Entered. At this time, the rotation of the second link member 31 in the positive direction P <b> 1 with respect to the first link member 29 is restricted by the rotation stopper 33. At this time, since the frictional force F3 acts on the displacement preventing portion 25 that is the ground contact portion of the second arm portion 17, the first arm is accompanied by the rotation of the second arm portion 17 around the ground contact portion by the force F2. The entire portion 15 rotates in the positive direction P1.

  FIG. 13 schematically shows a state where the arm unit 11 is in the storage position. If the 1st arm part 15 rotates until it exceeds a specific position from the state shown in FIG. 12, after that, the 1st link member 29 of the 1st arm part 15 will be automatically to a stowed position with the urging | biasing force of the urging | biasing member 13. To turn. At this time, the second link member 31 rotates in the reverse direction P <b> 2 with respect to the first link member 29 when the second arm portion 17 is separated from the travel surface Ds. Thereby, the vertical direction height of the 1st arm part 15 from the 1st axis | shaft 19 is suppressed, and the arm unit 11 can be compactized.

  As mentioned above, although this invention was demonstrated based on embodiment, embodiment only shows the principle and application of this invention. In the embodiment, many modifications and arrangements can be made without departing from the spirit of the present invention defined in the claims.

  Although the case where the support 10 is applied to a coaxial two-wheeled vehicle has been described, the support 10 may be applied to other bicycles, wheelchairs, and other vehicles.

  The urging member 13 only needs to be able to apply a urging force between the two when the one end side is connected to the vehicle body 110 and the other end side is connected to the arm unit 11. The biasing member 13 is a helical spring, but in addition to this, it may be constituted by various springs such as a disc spring, a leaf spring, a constant load spring, or an elastic body such as rubber, or a combination thereof. It may be constituted by. Moreover, although the other end side of the biasing member 13 has been described as being connected to the first arm portion 15, the biasing member 13 may be connected to the second arm portion 17.

  In the first embodiment, the anti-slip portion 25 is provided with a serrated uneven shape. However, as long as the ground contact portion 23 of the second arm portion 17 is provided with an uneven shape, the shape is not limited thereto. The means for providing the uneven shape may be provided with a plurality of protrusions on the ground contact portion 23 of the second arm portion 17, or may be applied with a particulate material on the surface, and is not particularly limited. Further, in the second embodiment, the anti-slip portion 25 is made of a material having a high coefficient of friction such as rubber. However, the material is not limited to this, and a known anti-slip material may be attached and applied. .

DESCRIPTION OF SYMBOLS 10 ... Support tool, 10 ... Vehicle support tool, 11 ... Arm unit, 13 ... Biasing member, 13a, 13b ... Connection location, 15 ... Arm part, 15 ... 1st arm part, 17 ... 2nd arm part, 19 ... 1st shaft, 21 ... 2nd shaft, 25 ... Anti-slip part, 27 ... Connection member, 29 ... 1st link member, 31 ... 2nd link member, 33 ... Rotation stopper, 35 ... Intermediate shaft, 100 ... Vehicle, 110 ... body, 115 ... rotation stopper, 120 ... wheel.

Claims (9)

An arm having a first arm portion rotatably connected around a first axis provided on the vehicle body and a second arm portion rotatably connected around a second axis provided on the first arm portion. Unit,
An urging member having one end connected to the arm unit and the other end connected to the vehicle body,
The arm unit includes a support position in which the second arm portion is grounded to a traveling surface on which a vehicle travels and supports the vehicle body by the first arm portion, and a storage position in which the second arm portion is floated from the traveling surface. And can be moved by rotating around the first axis,
When the arm unit moves from the support position toward the storage position, the arm unit is moved to the storage position by the urging force of the urging member when a specific position between the support position and the storage position is exceeded. Moved ,
It said second arm portion is a long body, a vehicle support, characterized in Rukoto ground portion is provided to be grounded to the running surface on one side in the width direction. An arm having a first arm portion rotatably connected around a first axis provided on the vehicle body and a second arm portion rotatably connected around a second axis provided on the first arm portion. Unit,
An urging member having one end connected to the arm unit and the other end connected to the vehicle body,
The arm unit includes a support position in which the second arm portion is grounded to a traveling surface on which a vehicle travels and supports the vehicle body by the first arm portion, and a storage position in which the second arm portion is floated from the traveling surface. And can be moved by rotating around the first axis,
When the arm unit moves from the support position toward the storage position, the arm unit is moved to the storage position by the urging force of the urging member when a specific position between the support position and the storage position is exceeded. Moved ,
The first arm portion is
A first link member rotatably connected about the first axis;
A second link member that is rotatably connected around an intermediate shaft provided in the first link member, and in which the second shaft is provided;
A rotation stopper that permits rotation of the second link member in one direction relative to the first link member and restricts rotation in the other direction when the arm unit is in the support position. A vehicle support. 2. The vehicle according to claim 1, wherein when the vehicle travels while the arm unit is in the support position, the arm unit moves to a position exceeding the specific position along with the rotation of the second arm portion around the ground contact point. Or the vehicle support tool of 2. 4. The vehicle support device according to claim 3 , wherein when the vehicle travels a predetermined travel distance when the arm unit is in the support position, the arm unit moves to a position exceeding the specific position. 5. . When the specific position is viewed from the axial direction of the first shaft, an imaginary line connecting a connecting portion of the biasing member to the vehicle body and a connecting portion of the biasing member to the arm unit overlaps the first shaft. It is a position, The vehicle support tool in any one of Claim 1 to 4 characterized by the above-mentioned.   The vehicular support according to any one of claims 1 to 5, wherein the second arm portion is provided with a non-slip portion at a ground contact point with respect to the traveling surface. A plurality of the arm units are connected at intervals in the vehicle width direction of the vehicle body,
The vehicle support device according to claim 1, wherein the plurality of arm units are connected by a connecting member.   The vehicle support device according to any one of claims 1 to 7, wherein the vehicle support device is used in a vehicle having a vehicle body and a pair of wheels provided coaxially with respect to the vehicle body.   The vehicular support according to any one of claims 1 to 8, wherein the urging member has one end connected to the first arm portion.

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