JP2005170343A - Side stand device for motorcycle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a side stand device for a motorcycle capable of reducing human labor for taking-around when the motorcycle is parked or stopped, preventing a parked/stopped state from becoming unstable even if there is no lock mechanism for braking an auxiliary wheel(s) rotating free of the risk that the side stand device itself is pulled down to an accommodation position undeliberately at the time of taking around by the use of the auxiliary wheel of the side stand device, manufacturable at low cost using a simple structure owing to solely being composed of the side stand device without requiring the reform of the body of the motorcycle, and capable of eliminating the risk to constitute an obstruction to a rider or any co-rider during traveling or touch any obstacle etc. <P>SOLUTION: The side stand device of the motorcycle has a rotational supporting means 10 which can rotate and support the auxiliary wheel(s) 12 to/in the standby position situated over the forefront of the body 4 of the stand device and a working position in front down aslant of the forefront of the body of the stand device. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a side stand device for a motorcycle, particularly a large motorcycle that requires a large amount of labor for handling when parked or stopped.

  Since motorcycles, particularly large motorcycles, have a large vehicle body and a heavy total vehicle weight, a large amount of labor is required for handling them when parking and stopping in a garage or a parking lot. In recent years, there are many lovers of powerless motorcycles such as women and elderly people, which can be a big problem. Moreover, there is a risk of not only a labor problem but also a fall accident during the handling of the motorcycle.

  In general, the lower abdomen frame of a motorcycle is provided with a side stand device, and can be freely inserted into and retracted from a storage position (running state) and a standing position (parking and stopping state). Therefore, in order to reduce the labor required for manpower when parking and stopping, there has been proposed an auxiliary wheel provided at the tip of the side stand device (Patent Document 1).

However, attaching the auxiliary wheels to the side stand device has the following problems, so that the current situation is that it has not been widely spread. That is, when an auxiliary wheel is simply provided at the tip of the side stand device, that is, when the side stand device is pulled out when parked, the auxiliary wheel provided at the tip of the side stand device is always in contact with the ground. When the auxiliary wheel is fixedly provided at the tip of the side stand device,
(A) When the parking / parking location is on a slope, the auxiliary wheel rotates inadvertently, and the parking / stopping state of the motorcycle becomes unstable and dangerous.
(B) In order to solve the above (a), it is necessary to provide a mechanism for appropriately locking the inadvertent rotation of the auxiliary wheel (see Patent Document 1). The point that,
(C) Even if the auxiliary wheel locking mechanism is provided as in (b) above, if the driver has to use the locking mechanism in a timely manner based on the driver's subjectivity, it makes sense if the driver inadvertently forgets it. Therefore, a mechanism that automatically locks at a timely timing is necessary. For example, when this is interlocked with a clutch lever of a motorcycle body (see Patent Document 1), not only the side stand device but also the motorcycle body is installed. Need to be remodeled, the structure becomes increasingly complex and expensive.
(D) When the motorcycle is supported by the front wheels, the rear wheels, and the auxiliary wheels of the side stand device, and the motorcycle is pushed forward by human power, the side stand device itself is firmly raised. If it is not fixed, the side stand device itself will be inadvertently pulled down to the storage position due to the reaction force, and there is a danger of falling, and in order to prevent this, a mechanism to fix the side stand device itself in an upright state is required. (See Patent Document 1), and the structure becomes more complicated and expensive.
(E) Even if the fixing mechanism of the side stand device itself is provided as in (d) above, if the fixing mechanism must be used in a timely manner according to the driver's subjectivity, the driver is inadvertently forgotten. Does not make sense, so a mechanism for automatically fixing at a timely timing is required. For example, when this is linked with the clutch lever of the motorcycle body together with (c) (see Patent Document 1), the side stand device In addition to the need to remodel the motorcycle itself, the structure becomes more complex and expensive.
(F) Furthermore, when the auxiliary wheel is fixedly provided on the side stand device, the auxiliary wheel protrudes outward even when the side stand device is pulled back to the storage position to be in the traveling state, so that the driver or boarding during traveling It is dangerous not only to disturb the person but also to contact obstacles,
There was a problem such as.
JP 60-248485 A

  Therefore, the present invention has been made in view of the above problems, and reduces the labor of manpower handling when the motorcycle is parked and stopped, and parking without a lock mechanism for stopping the rotation of the auxiliary wheel. The stationary state does not become unstable, and the side stand device itself is not inadvertently pulled down to the storage position when using the auxiliary wheels of the side stand device, and the motorcycle itself is modified. A side stand device for a motorcycle that can be manufactured at a low cost with a simple structure with only a side stand device, and that does not interfere with the driver or passenger during travel and does not come in contact with obstacles. It is intended to provide.

  In order to solve the above-described problems, a motorcycle side stand device according to the present invention includes a side stand device body that is rotatable between a storage position and a standing position, and an auxiliary wheel that is provided at a distal end portion of the side stand device body. A side stand device for a motorcycle, wherein the auxiliary wheel is rotated to a standby position above the front end of the side stand device main body and to an operating position obliquely downward and forward from the front end of the side stand device main body. It has rotation support means that can be freely and supported. Note that the forward direction refers to the straight traveling direction of the motorcycle, and the backward direction refers to the opposite direction.

  The rotation support means includes a support base member erected on the upper surface of the front end portion of the side stand device body, a rotation member pivotally supported with respect to the support base member, It is preferable to include an auxiliary wheel pivotally attached to the distal end portion and a locking member that locks the rotating member so that the auxiliary wheel is supported at the standby position or the operating position.

  The rotation support means further includes a pull-back member that pulls the auxiliary wheel back to the standby position when the rotation member is unlocked by the locking member corresponding to the support of the auxiliary wheel at the operating position. It is preferable to provide.

  The rotation support means has a first locking hole corresponding to a standby position of the auxiliary wheel opened in the support base member on the same concentric circle of the rotation shaft of the rotation member with respect to the support base member. In addition, a second locking hole corresponding to the operating position of the auxiliary wheel is opened in the rotating member, and one end of the locking member is inserted into the first locking hole. In the state, the other end portion is urged inward by an elastic body to the side stand device main body via the support shaft, so that one end portion thereof is always urged outward, and One end portion of the pullback member is fixed to the rotating member, and the other end is urged to the support base member via the elastic body and elastically provided at the rear end of the support base member. When the auxiliary wheel is biased toward the rear of the support base member and the auxiliary wheel is in the standby position, When the member is rotated forward, one end portion of the locking member is inserted into the second locking hole in a state where the one end is inserted into the first locking hole, and the rotating member is locked. The auxiliary wheel is supported at the operating position. When the auxiliary wheel is in the operating position, when the other end of the locking member is pressed outward, the locking is performed via the support shaft. One end of the member is displaced inward and detached from the second locking hole, and the rotating member is pulled back by the pulling member and rotated backward to support the auxiliary wheel at the standby position. It is preferable to become like this. Note that “inward” refers to the direction in which the side stand device or motorcycle is present, and “outward” refers to the opposite direction.

  When the auxiliary wheel is in the operating position when the side stand device body is rotated from the standing position to the stowed position, the other end of the locking means is below the motorcycle. Contacted with the abdomen and pressurized outwardly, one end of the locking member is displaced inward via the support shaft and detached from the second locking hole, and the rotating member is pulled back It is preferable that the auxiliary wheel is pulled back by the member and rotated backward to support the auxiliary wheel at the standby position.

  Preferably, the rotation support means further includes a standby position adjustment member that adjusts the position of the rotation member with respect to the support base member in order to finely adjust the standby position of the auxiliary wheel.

  It is preferable that the elastic body is a tension coil spring. The other end of the locking member and the other end of the pullback member are preferably covered with a synthetic resin having a buffering property such as rubber.

  According to the present invention, it is possible to reduce the labor of manpower handling when the motorcycle is parked and stopped, and the parking and parking state is not unstable even without a lock mechanism for stopping the rotation of the auxiliary wheel. When using the auxiliary wheel of the device, the side stand device itself will not be accidentally pulled down to the storage position, and the motorcycle itself does not need to be modified, and it has a simple structure with only the side stand device. It is possible to provide a side stand device for a motorcycle that can be manufactured at a low cost and that does not interfere with the driver or passenger during travel and does not come into contact with an obstacle or the like.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the accompanying drawings. However, the illustrated examples are shown as examples, and it goes without saying that various modifications are possible without departing from the technical idea of the present invention.

  FIG. 1 is a schematic front view of a motorcycle side stand device according to the present invention, showing a case where auxiliary wheels are in a standby position. FIG. 2 is a schematic side view of FIG. FIG. 3 is a schematic back view of FIG. FIG. 4 is a schematic overall side view showing FIG. 2 together with the motorcycle. FIG. 5 is a schematic front view of the motorcycle side stand device of the present invention, showing a case where the auxiliary wheel is in the operating position. 6 is a schematic side view of FIG. FIG. 7 is a schematic rear view of FIG. FIG. 8 is an overall schematic side view showing FIG. 6 together with the motorcycle. In the following, forward refers to the straight traveling direction of the motorcycle, and backward refers to the opposite direction. Further, the inner side is the direction in which the side stand device main body or the motorcycle is present, and the outer side is the opposite direction.

  First, the motorcycle side stand device of the present invention in a state where the auxiliary wheel is at the standby position will be described with reference to FIGS. In the figure, reference numeral 8 denotes a motorcycle side stand device of the present invention, reference numeral 4 denotes a side stand device body, and reference numeral 2 denotes a motorcycle. The side stand device main body 4 is pivotally supported on the lower abdomen frame of the motorcycle 2 and can be freely moved in and out of the storage position (running state) and the standing position (parking and stopping state) (FIG. 4). Etc.).

  The side stand device 8 for a motorcycle according to the present invention includes a side stand device main body 4, a rotation support means 10 provided above the tip of the side stand device main body 4, and an auxiliary wheel 12 pivotally attached to the rotation support means 10. It is made up of. The material and size of the auxiliary wheel 12 are not particularly limited, and may be a wheel having a diameter of about 3 to 10 cm made of a synthetic resin having elasticity such as rubber. In addition, the material of each member of the rotation support means 10 described below is preferably made of steel for reasons such as requiring rigidity to support the vehicle weight. Alternatively, it can be adopted for all.

  The rotation support means 10 is a plate-like support base member 20 that is erected so that the lower end portion is fixed to the upper surface of the front end portion of the side stand device body 4 by welding or the like, and the rotation support means 10 The front end U-shaped pivot member 30 that is pivotally supported by the shaft 35 and the base end plate-like rotation member 30 and the auxiliary wheel 12 are in the standby position (FIGS. 1 to 4) or the operating position (FIG. 5). 8 to 8), a long bar-shaped locking member 40 that locks the rotating member 30 with respect to the support base member 20, and the locking of the rotating member 30 by the locking member 40 is released. And a pull-back member 60 that pulls the auxiliary wheel 12 back to the standby position when it is done.

  The shape and the like of the support base member 20 are not particularly limited. For example, as shown well in FIG. 2, the support base member 20 is a plate-like member whose front end portion is arcuate and whose upper end portion is inclined from the front to the rear. The support base member 20 is erected by fixing the lower end portion thereof to the upper surface of the distal end portion of the side stand device body 4 with a welded portion W (see FIG. 1 and the like). A bearing portion 27 is provided at a substantially central portion of the support base member 20. The bearing portion 27 is a portion that rotatably supports a rotation shaft 35 of a rotation member 30 described later.

  Further, a first locking hole 28 is opened in the support base member 20. The opening position of the first locking hole 22 is on the same concentric circle of the second locking hole 38 and the rotating shaft 35 which are opened in the rotating member 30 described later, and is more than the rotating shaft 35. Open forward. When the auxiliary wheel 12 is in the standby position (FIGS. 1 to 4), the first locking hole 22 is inserted with the tip of a lower end bent portion 42 bent into an L shape of a locking member 40 described later. It is in a fitted state (see FIGS. 1 and 2 etc.).

  Further, a standby position adjusting member 26 is provided at the upper rear end of the support base member 20 so as to protrude toward the rotating member 30. The standby position adjusting member 26 includes a nut 24 fixed to the upper rear end of the support base member 20 and a bolt 25 that is screwed to the nut 24. The standby position can be finely adjusted by pressing the rear end portion.

  Next, the shape and the like of the rotating member 30 are not particularly limited. For example, as shown in FIG. 1 and FIG. 2, the distal end portions 34 and 34 are front U-shaped, and the proximal end portion 32 is plate-shaped. This is a member. The rotating member 30 has an auxiliary wheel 12 rotatably mounted on a wheel shaft 36 at the front U-shaped front end portions 34, 34, and the support base at the plate-like base end portion 32. A rotation shaft 35 is supported on the bearing portion 27 of the member 20 and is rotatably supported.

  Further, a second locking hole 38 is opened in the rotating member 30. The opening position of the second locking hole 38 is on the same concentric circle of the first locking hole 22 and the rotation shaft 35, and the auxiliary wheel 12 is in the standby position (FIGS. 1 to 4). Is not coincident with the first locking hole 22, but coincides with the first locking hole 22 when the rotating member 30 is rotated forward and the auxiliary wheel 12 is in the working position (FIGS. 5 to 8). Open as shown.

  The locking member 40 is a member for locking the rotating member 30 so that the auxiliary wheel 12 is supported at the standby position or the operating position. For example, the locking member 40 is bent into a front inverted U shape as shown in the figure. It is a rod-shaped member. The locking member 40 is formed with an upper end bent portion 44 and a lower end bent portion 42 and is pivotally supported by a support shaft 48 so as to be rotatable. The support shaft 48 is provided on a support shaft support member 46 that protrudes inward (on the side of the locking member 40) from the top of the support base member 20. Further, the first elastic body support bar 50 is fixedly installed by welding or the like at an inner position corresponding to the locking member 40, for example, the side stand device main body 4, and the first elastic body support bar 50 is locked. A first elastic body 55 is suspended between the upper portion of the member 40. The first elastic body 55 is not particularly limited as long as it receives a tensile load, and for example, a tension coil spring or the like can be used. As a result, the upper portion of the locking member 40 is pulled inward (in the direction of the side stand device main body 4) by the first elastic body support rod 50 and the first elastic body 55, so that the locking member 40 is interposed via the support shaft 48. The lower end bent portion 42 of the locking member 40 is inserted into the first locking hole 28 of the support base member 20 while being always biased outward. Will be.

  Further, a covering member 45 made of a synthetic resin having a cushioning property such as rubber is fitted on the upper end bent portion 44 of the locking member 40. As will be described later, this also has a convenient meaning when returning the auxiliary wheel 12 from the operating position to the standby position by pressing the upper bent portion 44 outward with a hand or foot. When the side stand device body 4 is pulled down from the standing position (parking / stopping state) to the storage position (running state) while the wheel 12 is in the operating position, an under cowl portion of the lower abdomen of the motorcycle (reference symbol P in FIG. 8). When the upper end bent portion 44 of the locking member 40 comes into contact with the illustrated portion), the upper end bent portion 44 is pressed outward by the impact, and the locking member 40 locks the rotating member 30. Is released (the lower end tip 42 of the locking member 40 is disengaged from the second locking hole 38 of the rotating member 30), the auxiliary wheel 12 can be automatically returned from the operating position to the standby position. In that case, the impact of the contact with the upper bent portion 44 causes the motorcycle to Is intended to not damage the under cowl portion of the abdomen (the portion indicated by symbol P in FIG. 8).

  Further, the bending angle of the upper end bending portion 44 of the locking member 40 is such that when the side stand device body 4 is pulled down from the standing position (parking / stopping state) to the storage position (running state), the lower abdomen of the motorcycle is set. An obtuse angle so that an impact force generated by contact between the under cowl portion (portion indicated by P in FIG. 8) and the upper bent portion 44 of the locking member 40 is generated as an outward pressing force on the upper bent portion 44. Need to be. That is, if the upper end bent portion 44 is not bent at all or has a sharp bent angle, the impact force generated by the contact does not escape outward, so that no outward pressing force is generated, This is because the locking of the rotating member 30 by the stopping member 40 cannot be automatically released due to the impact generated by the contact.

  The pull-back member 60 is a member for pulling the auxiliary wheel 12 back to the standby position when the locking member 40 is unlocked by the locking member 40. For example, as shown in FIG. It is a rod-shaped member. The retracting member 60 is fixed to the middle part of the rear end of the rotating member 30 by welding or the like, and is supported by the second elastic body at a rear position corresponding to the retracting member 60, for example, at the lower end of the rear end of the support base member 20. A rod 68 is fixedly projected by welding or the like, and a second elastic body 65 is suspended between the second elastic body support rod 68 and the pullback member 60. The second elastic body 65 is not particularly limited as long as it receives a tensile load, like the first elastic body 55, and for example, a tension coil spring or the like can be used. As a result, the retracting member 60 is always biased rearward (toward the rear end of the support base member 20). A covering member 61 made of a synthetic resin having a cushioning property such as rubber is fitted on the open end of the pull-back member 60. This is for the convenience of operating the pull-back member 60 with a hand or a foot when the rotating member 30 is rotated to displace the auxiliary wheel 12 from the standby position to the operating position.

  As shown in FIG. 4, in the motorcycle side stand device of the present invention, when the auxiliary wheel 12 is in the standby position, the auxiliary wheel 12 is not in contact with the ground, and thus used in the same way as a normal side stand device. It is possible that the parking / stopping state of the motorcycle 2 does not become unstable. Therefore, there is no need for a mechanism for locking the rotation of the auxiliary wheel as in Patent Document 1.

  Next, the motorcycle side stand device of the present invention in a state where the auxiliary wheel 12 is in the operating position will be described with reference to FIGS. Since the structure of each member is as described in the description of FIGS. 1 to 4, repeated description is omitted, and in the following, the standby position of the auxiliary wheel 12 by the motorcycle side stand device 8 of the present invention ( The displacement operation from the operation position (FIGS. 5 to 8) from FIG. 1 to FIG. 4 and the reverse operation from the operation position to the standby position will be described.

  In order to displace the auxiliary wheel 12 of the motorcycle side stand device 8 of the present invention from the standby position (FIGS. 1 to 4) to the operating position (FIGS. 5 to 8), the pull-back member 60 fixed to the rotating member 30 is used. Is pushed forward with a hand or foot to rotate the rotation member 30 via the rotation shaft 35. As described above, the second locking hole 38 opened in the rotating member 30 and the first locking hole 28 opened in the support base member 20 are the same concentric circle of the rotating shaft 35. Since the upper opening is opened, the second locking hole 38 coincides with the first locking hole 28 when the rotating member 30 rotates.

  Here, since the tip end portion of the lower end bent portion 42 bent in the L shape of the locking member 40 is inserted into the first locking hole 28 while being biased outward, When the second locking hole 38 coincides with the first locking hole 28, the tip end portion of the lower end bent portion 42 of the locking member 40 protrudes and is fitted into the second locking hole 38, so that the rotating member 30 is locked with the auxiliary wheel 12 in the operating position, and the displacement of the auxiliary wheel 12 from the standby position to the operating position is completed.

  Then, after the motorcycle 2 is appropriately routed, the auxiliary wheel 12 is moved to the operating position (in order to stabilize the parking / stopping state or so as not to obstruct the running when the motorcycle 2 starts running). In order to displace the standby position (FIGS. 1 to 4) from FIGS. 5 to 8, an operation of pressing the upper bent portion 44 of the locking member 40 outward is performed. When the upper end bent portion 44 is pressed outward, the lower end bent portion 42 rotates inward via the support shaft 48, so that the lower end distal end portion 42 is in the second locking hole 38 of the rotating member 30. And the locking of the rotating member 30 by the locking member 40 is released. When the locking member 40 is released from the locking state, the retracting member 60 fixed to the rotating member 30 is urged rearward by the second elastic body 65 (see FIG. 6), and rotates backward via the rotation shaft 35. Then, the rotating member 30 rotates by contacting the standby position adjusting member 26 provided so that the rear end of the rotating member 30 protrudes toward the rotating member 30 from the upper rear end of the support base member 20. Is stopped, and the rotation member 30 is in a state where the auxiliary wheel 12 is in the standby position, and the displacement of the auxiliary wheel 12 from the operating position to the standby position is completed.

  If the above-mentioned pressing operation to the outside of the upper bent portion 44 of the locking member 40 when displacing the auxiliary wheel 12 from the operating position to the standby position is to stabilize the parking / stopping state of the motorcycle 2, Although it is sufficient to perform a manual pressing operation with a hand or a foot, if it is necessary to prevent the vehicle 2 from getting in the way when the motorcycle 2 starts running, It can be cumbersome and inadvertently forgotten. Therefore, regarding the bending angle of the upper end bending portion 44 of the locking member 40, when the side stand device body 4 is pulled down from the standing position (parking / stopping state) to the storage position (running state), the lower abdomen of the motorcycle is The impact force generated by the contact between the under cowl portion (the portion indicated by symbol P in FIG. 8) and the upper end bent portion 44 of the locking member 40 escapes outward and acts as an outward pressing force on the upper end bent portion 44. The obtuse angle is generated. As a result, the upper bent portion 44 of the locking member 40 is simply moved down from the standing position (parking / stopping state) to the storage position (running state) so that the upper bent portion 44 of the locking member 40 8), the pressing operation to the outside of the upper bent portion 44 of the locking member 40 is automatically performed, and the auxiliary wheel 12 is moved from the operating position to the standby position. Can complete the displacement.

  In addition, an under cowl portion (portion indicated by P in FIG. 8) of the lower abdomen of the motorcycle, which is a contact portion with the upper bent portion 44 of the locking member 40, is provided with a buffer such as rubber to prevent damage. If a sticky pad is attached, it becomes a more preferable aspect.

  As shown in FIG. 8, in the motorcycle side stand device of the present invention, when the auxiliary wheel 12 is in the operating position, the auxiliary wheel 12 comes into contact with the ground, and the motorcycle 2 includes the front wheel and the rear wheel. In addition, the motorcycle 2 can be easily routed by being supported at three points with the auxiliary wheel 12 by the motorcycle side stand device 8 of the present invention. In addition, since the operating position of the auxiliary wheel 12 is positioned obliquely forward and downward with respect to the front end portion of the side stand device main body 4, the center of gravity of the support of the motorcycle 2 by the motorcycle side stand device 8 of the present invention is the side stand device main body 4 Therefore, there is no risk that the side stand device itself is inadvertently pulled down to the storage position due to the reaction force when the motorcycle 2 is routed. There is no need for a mechanism to fix it upright.

FIG. 2 is a front schematic explanatory view showing a motorcycle side stand device according to the present invention and showing a case where an auxiliary wheel is in a standby position. FIG. 2 is a schematic side view of FIG. 1. It is a back surface schematic explanatory drawing of FIG. FIG. 3 is an overall side schematic view showing FIG. 2 together with the motorcycle. FIG. 2 is a front schematic explanatory view showing a motorcycle side stand device according to the present invention, in which an auxiliary wheel is in an operating position. FIG. 6 is a schematic side view of FIG. 5. It is a back surface schematic explanatory drawing of FIG. FIG. 7 is an overall side view schematically showing FIG. 6 together with the motorcycle.

Explanation of symbols

  2: motorcycle, 4: side stand device main body, 8: side stand device for motorcycle of the present invention, 10: rotation support means, 12: auxiliary wheel, 20: support base member, 24: nut, 25: bolt, 26: Standby position adjusting member, 27: bearing portion, 28: first locking hole, 30: rotating member, 32: plate-like base end portion, 34: front U-shaped tip portion, 35: rotating shaft, 36: wheel Shaft: 38: second locking hole, 40: locking member, 42: lower end bent portion, 44: upper end bent portion, 45: covering member, 46: support shaft support member, 48: support shaft, 50: first 1 elastic body support rod, 55: first elastic body, 60: pullback member, 61: covering member, 65: second elastic body, 68: second elastic body support rod, W: welded portion.

Claims (8)

  A side stand device for a motorcycle, comprising: a side stand device main body that is rotatable between a storage position and an upright position; and an auxiliary wheel provided at a distal end of the side stand device main body, wherein the auxiliary wheel is connected to the side stand device main body. A rotating support means is provided which is rotatable and supportable at a standby position above the front end of the side stand and an operating position obliquely forward and downward relative to the front end of the side stand device main body. Side stand device for motorcycles.   The rotation support means includes a support base member erected on the upper surface of the distal end portion of the side stand device body, a rotation member pivotally supported with respect to the support base member, and a distal end of the rotation member And a locking member that locks the rotating member so that the auxiliary wheel is supported at the standby position or the operating position. Item 2. The side stand device for a motorcycle according to Item 1.   The rotation support means further includes a pull-back member that pulls the auxiliary wheel back to the standby position when the rotation member is unlocked by the locking member corresponding to the support of the auxiliary wheel at the operating position. The motorcycle side stand device according to claim 2, further comprising:   The rotation support means has a first locking hole corresponding to a standby position of the auxiliary wheel opened in the support base member on the same concentric circle of the rotation shaft of the rotation member with respect to the support base member. In addition, a second locking hole corresponding to the operating position of the auxiliary wheel is opened in the rotating member, and one end of the locking member is inserted into the first locking hole. In the state, the other end portion is urged inward by an elastic body to the side stand device main body via the support shaft, so that one end portion thereof is always urged outward, and One end portion of the pullback member is fixed to the rotating member, and the other end is urged to the support base member via the elastic body and elastically provided at the rear end of the support base member. When the part is biased rearward and the auxiliary wheel is in the standby position, the rotating member is rotated forward. Then, with the one end of the locking member inserted into the first locking hole, the locking member is also inserted into the second locking hole, and the rotating member is locked to operate the auxiliary wheel. When the auxiliary wheel is in the operating position, when the other end of the locking member is pressurized outward, the one end of the locking member is moved through the support shaft. It is displaced inwardly and detached from the second locking hole, and the rotating member is pulled back by the pulling member and rotated backward to support the auxiliary wheel at the standby position. The motorcycle side stand device according to claim 3.   When the auxiliary wheel is in the operating position when the side stand device body is rotated from the standing position to the stowed position, the other end of the locking means is below the motorcycle. Contacted with the abdomen and pressurized outwardly, one end of the locking member is displaced inward via the support shaft and detached from the second locking hole, and the rotating member is pulled back 5. The side stand device for a motorcycle according to claim 4, wherein the side stand device for a motorcycle is pulled back by a member and rotated rearward to support the auxiliary wheel at a standby position.   The said rotation support means is further equipped with the standby position adjustment member which adjusts the position of the rotation member with respect to a support base member, in order to perform fine adjustment of the standby position of the said auxiliary wheel. The side stand device for a motorcycle according to any one of the preceding claims.   The side stand device for a motorcycle according to any one of claims 4 to 6, wherein the elastic body is a tension coil spring.   8. The motorcycle according to claim 4, wherein the other end portion of the locking member and the other end portion of the pullback member are covered with a synthetic resin having a buffering property. Side stand device.

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