JP2013226923A - Main stand of saddle riding type vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the weight of a main stand of a saddle riding type vehicle, while securing necessary and sufficient rigidity and strength of a pair of right and left, first and second leg portions, in the main stand including a cylindrical supported portion supported by a spindle provided on a vehicle body side and the pair of first and second leg portions extended from the supported portion and allowing rotation between a standing position and a storage position.SOLUTION: A first leg portion 45 is formed of a pipe material. A second leg portion 46 is formed by bending a plate. An operation section 47 to be operated from a storage position to a standing position side is provided continuously to the first leg portion 45.

Description

  The present invention includes a cylindrical supported portion supported by a support shaft provided on the vehicle body side, and first and second leg portions extending in a pair on the left and right sides, and both leg portions The present invention relates to a main stand of a saddle-ride type vehicle that can be rotated between a standing position in which the vehicle is grounded and parked and a storage position in which both legs are stored on the vehicle body side.

  Patent Document 1 discloses a main stand for a motorcycle in which a pair of left and right legs are formed of the same material and have the same shape.

JP 2006-1328 A

  By the way, the load applied to the main stand includes a dynamic load when the foot is operated from the storage position to the standing position, and a static load when the vehicle is parked at the standing position. The inventors of the present application have found that the required stiffness and strength change in the state. On the other hand, since the operation part operated with a foot is generally formed on one of a pair of legs, both legs are formed of the same material and in the same shape as disclosed in Patent Document 1. Then, the leg part on the side where the operation part is not formed has rigidity and strength more than necessary, and there remains room for weight reduction.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a main stand of a saddle-ride type vehicle that can be reduced in weight while ensuring necessary and sufficient rigidity and strength for a pair of legs. To do.

  In order to achieve the above-described object, the present invention provides a first and second extension extending from the supported portion in a pair with a cylindrical supported portion supported by a support shaft provided on the vehicle body side. In a main stand of a saddle-ride type vehicle having a leg portion and capable of rotating between a standing position where both legs are grounded and parked and a storage position where both legs are stored on the vehicle body side, The leg portion is formed of a pipe material, the second leg portion is formed by bending a plate material, and an operation portion that can be operated from the stowed position to the upright position side is connected to the first leg portion. This is the first feature.

  Further, according to the present invention, in addition to the configuration of the first feature, the connecting portion that connects the first and second legs is lower than the connecting portion of the both legs to the supported portion at the standing position. The second feature is that the second leg portion is formed integrally with the second leg portion.

  The third feature of the present invention is that, in addition to the configuration of the second feature, the lower edge of the connecting portion on the second leg side at the standing position is formed in an arc shape that swells upward. To do.

  In addition to the configuration of the second or third feature, the fourth feature of the present invention is that the connecting portion is formed to bulge forward from the first leg portion at the standing position. .

  According to the present invention, in addition to the configuration of the first or second feature, a stopper portion that abuts against the vehicle body side at the standing position and restricts a rotation end from the storage position to the standing position side includes a second leg. It is a fifth feature that it is formed integrally with the part.

  According to the present invention, in addition to any one of the first to fifth features, the first leg portion is formed to have an oval cross-sectional shape in which the longitudinal direction at the standing position is a major axis direction. This is a sixth feature.

  According to the first feature of the present invention, the first leg to which the operating portion is continuously provided is formed of a pipe material, and the second leg is formed by bending a plate material. Due to the dynamic load when operating to the position, only the static load at the standing position acts while ensuring the rigidity and strength required for the first leg by forming with the pipe material By forming the second leg portion to be bent by a plate material, the main stand can be reduced in weight without giving the second leg portion rigidity or strength more than necessary.

  Further, according to the second feature of the present invention, the first and second legs are connected by a connecting part positioned below the connecting part of the both leg parts and the supported part in the standing position. It is possible to increase the rigidity of both legs, and the connecting part is formed integrally with the second leg formed by bending the plate material, so that it is easy to form the connecting part integrally with the second leg. On the other hand, since the number of connections such as welding can be reduced as much as possible, the productivity can be improved and the weight of the main stand can be reduced.

  According to the third feature of the present invention, the second leg portion of the connecting portion is formed such that the lower edge shape of the connecting portion standing up to the second leg portion of the connecting portion is an arc shape bulging upward. Further weight reduction can be achieved while avoiding the occurrence of stress concentration at the connecting portion.

  According to the fourth feature of the present invention, since the connecting portion that connects the first and second legs bulges forward from the first leg in the standing position, the main stand is in the storage position. Therefore, it is possible to realize a compact storage state of the main stand by suppressing interference between the vehicle body side member and the connecting portion.

  According to the fifth feature of the present invention, since the stopper part for restricting the rotation end of the main stand from the storage position to the standing position side is formed integrally with the second leg part, the rigidity of the second leg part is increased. The stopper part is formed integrally with the second leg part formed by bending the plate material, so that it is easy to form the stopper part integrally with the second leg part, and connection such as welding is performed. Since the number of locations can be reduced as much as possible, productivity can be improved and the weight of the main stand can be reduced.

  Furthermore, according to the fifth feature of the present invention, since the cross-sectional shape of the first leg is an ellipse having the longitudinal direction at the standing position as the major axis direction, the strength and rigidity of the first leg are reduced. The weight can be increased in the direction of receiving a load from the operation portion, and the weight can be reduced as compared with the case of a true circular cross section.

1 is a side view of a motorcycle. It is a vertical side view which shows the principal part of FIG. 1 in the state in which the one part was notched. FIG. 3 is a view taken in the direction of arrow 3 in FIG. 2. FIG. 4 is a view taken in the direction of arrow 4 in FIG. 2. FIG. 5 is a sectional view taken along line 5-5 of FIG. It is a perspective view of a main stand.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 6 attached hereto. In the following description, front and rear and top and bottom refer to directions as viewed from a rider riding a motorcycle. .

  First, in FIG. 1, a body frame F of a motorcycle that is a saddle-ride type vehicle includes a head pipe 12 that supports a front fork 11 so as to be steerable, a main frame 13 that extends rearwardly downward from the head pipe 12, and a main frame. 13 is provided with a pair of left and right rear frames 14 which are connected to the rear portion of the front fork 11 and extend rearward. A front wheel WF is pivotally supported at the lower end of the front fork 11, and a bar-shaped steering handle is disposed at the top of the front fork 11. 15 is connected, and a front fender 16 that covers the upper side of the front wheel WF is supported by the front fork 11.

  Hanger plates 17 are fixed to both side surfaces of the intermediate portion of the main frame 13, and pivot plates 18 are fixed to rear side surfaces of the main frame 13.

  Below the main frame 13, an engine body 19 of the internal combustion engine E is disposed with the cylinder axis line slightly raised upward. The engine body 19 constitutes a vehicle body B together with the vehicle body frame F, and The hanger plates 17 and pivot plates 18 of the vehicle body frame F are supported. A front end portion of a swing arm 21 that pivotally supports the axle 20 of the rear wheel WR at the rear end portion is supported on the pivot plate 18 so as to be swingable up and down, and the rear frame 14 and the swing arm 21 in the vehicle body frame F are supported. A rear cushion 23 is provided between them.

  A transmission (not shown) is accommodated in the lower portion of the engine body 19, and an output shaft 24 of the transmission projects leftward from the lower portion of the engine body 19, and an end portion of the output shaft 24. An endless chain 27 is wound around a drive sprocket 25 fixed to the rear wheel and a driven sprocket 26 fixed to the axle 20 of the rear wheel WR. A chain cover 28 is attached to the swing arm 21 so as to cover a part of the traveling portion of the chain 27 from the driven sprocket 26 to the drive sprocket 25 side from above.

  A synthetic resin vehicle body cover 30 that covers the vehicle body frame F and a part of the internal combustion engine E is attached to the vehicle body frame F. The vehicle body cover 30 is disposed on the left and right sides of the main frame 13. The side covers 31 and the leg shields 32 connected to the front portions of the front side covers 31 so as to cover the rider's legs from the front, and the leg shields 32 so as to cover the head pipe 12 from the front. A continuous front top cover 33, a main frame top cover 34 connected to the front top cover 33 so as to cover the head pipe 12 from the rear side and cover the main frame 13 from above, and a lower part of the front side covers 31 ... The rear cover that covers the under cover 35 and the rear part of the vehicle body frame F from both sides Composed of a compartment cover 36 ... capital.

  A tandem type riding seat 38 is disposed on the rear side covers 36... And a rear fender 39 that covers the rear upper part of the rear wheel WR is connected to the rear side covers 36.

  Further, at the lower left side of the engine body 19, a side stand 40 is disposed so as to be rotatable between an upright position where the motorcycle is tilted to the left and stopped and a storage position where the motorcycle can run, A shift pedal 41 for changing the shift position of the transmission is rotatably disposed.

  Referring also to FIG. 2, the main stand 42 is located on the vehicle body B behind the shaft fulcrum of the side stand 40 to the engine body 19, and the standing position indicated by the solid line in FIG. 2 and the chain line in FIG. 2. In this embodiment, the main stand is attached to a pair of left and right pivot plates 18 and 18 in a vehicle body frame F that constitutes a part of the vehicle body B. 42 is rotatably supported.

  3 to 6 together, the main stand 42 is paired on the left and right with a cylindrical supported portion 44 supported by a support shaft 43 provided on the vehicle body B side. 44, first and second leg portions 45 and 46, an operation portion 47 which is connected to the first leg portion 45 so as to be operable from the stowed position to the standing position side, And a connecting portion 48 for connecting the second leg portions 45 and 46.

  The support shaft 43 extending in the vehicle width direction is provided between the lower portions of the pair of left and right pivot plates 18, 18, and the supported portion 44 having a length disposed between the pivot plates 18, 18. Further, the support shaft 43 is inserted so as to support the supported portion 44.

  The first and second leg portions 45 and 46 are arranged so that the distance between them increases as the distance from the supported portion 44 increases. One end portions of the first and second leg portions 45 and 46 Are welded to the left and right positions of the supported portion 44.

  The first leg 45 is made of a pipe material, and is formed to have an oval cross-sectional shape with the longitudinal direction as the major axis direction when the main stand 42 is in the upright position. That is, in the state where the main stand 42 is in the standing position, the width W1 (see FIG. 2) orthogonal to the central axis of the first leg 45 in the front-rear direction is equal to the width W2 orthogonal to the central axis in the vehicle width direction (see FIG. 3 and FIG. 3). The first leg 45 is formed so as to be larger than that shown in FIG.

  The operation portion 47 is formed by bending a pipe material, and one end portion of the operation portion 47 is welded to the other end portion of the first leg portion 45. In addition, a triangular reinforcing plate 49 is welded to the rear portion on the other end side of the first leg portion 45 in a state where the main stand 42 is in the standing position, and the reinforcing plate 49 is also welded to the operation portion 47. In other words, the reinforcing plate 49 is provided between the other end portion of the first leg portion 45 and the operation portion 47.

  The second leg portion 46 is in a state where the outer side plate portion 46a is welded to the supported portion 44 along one plane perpendicular to the axis of the support shaft 43 and the main stand 42 is in the standing position. A front plate portion 46b provided continuously with a front end portion of the outer side plate portion 46a, and an inner side plate portion 46c provided continuously with a lower half portion of the front plate portion 46b in a state where the main stand 42 is in an upright position. The outer side plate portion 46a is formed in a triangular shape whose width decreases as the distance from the supported portion 44 increases. Thus, the cross-sectional shape of the half portion of the second leg portion 46 on the side of the supported portion 44 is substantially “L”, and the transverse portion of the second leg portion 46 on the side far from the supported portion 44 is crossed. The surface shape is substantially “U” -shaped.

  Moreover, the other end portions of the first and second leg portions 45 and 46 are welded to ground members 50 and 51 which are grounded when the main stand 42 is in the upright position.

  The connecting portion 48 is positioned below the connecting portion of the first and second leg portions 45 and 46 to the supported portion 44 in a state where the main stand 42 is in the standing position, and the front plate portion 46 b and the inner side plate portion 46 c are integrally formed with the second leg portion 46 and welded to the first leg portion 45. In addition, when the main stand 42 is in the standing position, the connecting portion 48 is formed so as to bulge forward from the first leg portion 45, and the connecting portion 48 has a triangular opening 52 for lightening. Is provided. The lower edge of the connecting portion 48 in the state where the main stand 42 is in the standing position is formed so that the lower edge on the second leg portion 46 side becomes an arcuate arc portion 48a bulging upward. The

  The second leg portion 46 includes a first stopper portion 53 that abuts against the vehicle body B side when the main stand 42 rotates to the standing position and restricts the rotation end from the storage position to the standing position side. Are integrally formed. Thus, in this embodiment, a regulating shaft 54 positioned in front of the support shaft 43 is disposed between the pair of left and right pivot plates 18 and 18 in the vehicle body frame F constituting a part of the vehicle body B. The first stopper portion 53 is constructed so as to have an axis parallel to the shaft 43, and the first stopper portion 53 is integrated with the second leg portion 46 so as to abut on the restriction shaft 54 from below at the standing position. It is formed integrally with the part 48.

  Further, the supported portion 44 contacts the restriction shaft 54 from above as shown by a chain line in FIG. 2 when the main stand 42 is rotated to the storage position, and rotates from the standing position to the storage position side. A second stopper portion 55 that regulates the moving end is provided by welding. The second stopper portion 55 has a substantially U-shaped cross section, and the elastic member 56 held by the second stopper portion 55 abuts on the restriction shaft 54.

  Of the pair of left and right pivot plates 18, 18, a pin 58 provided at a lower portion of the right pivot plate 18 and projecting forward, and an outer side of the second leg 46 of the main stand 42. A tension coil spring 57 is provided between the side plate portion 46a and a spring receiving member 59 fixed to the outer surface of the side plate portion 46a. The tension spring 57 maintains the standing position and the storage position of the main stand 42, respectively. The main stand 42 is energized.

  Next, the operation of this embodiment will be described. The main stand 42 is paired on the left and right with the cylindrical supported portion 44 supported by the support shaft 43 provided on the vehicle body B side. The first and second leg portions 45 and 46 are extended, the first leg portion 45 is formed of a pipe material, the second leg portion 46 is formed by bending a plate material, and is raised from the storage position. Since the operation portion 47 that can be operated to the side is connected to the first leg portion 45, a dynamic load is applied when the foot is operated from the storage position to the standing position. By forming the second leg portion 46 that is acted only by the static load at the standing position by bending the plate material while securing the rigidity and strength required for the leg portion 45 by the pipe material, Without giving the leg 46 more rigidity and strength than necessary, It is possible to reduce the weight of the command 42.

  Further, since the first and second leg portions 45, 46 are connected by the connecting portion 48, the rigidity of both the leg portions 45, 46 can be increased. In addition, the connecting portion 48 is positioned below the connecting portion of the first and second leg portions 45 and 46 to the supported portion 44 in the standing position on the second leg portion 46 formed by bending the plate material. Thus, the connecting portion 48 can be easily formed integrally with the second leg portion, and the number of connection portions such as welding can be reduced as much as possible. The weight of the stand 42 can be reduced.

  Further, since the lower edge of the connecting portion 48 at the standing position on the second leg portion 46 side is formed in an arc shape that swells upward, stress concentration occurs at the connecting portion of the connecting portion 48 to the second leg portion 48. Further weight reduction can be achieved while avoiding the occurrence.

  Further, since the connecting portion 48 is formed to bulge forward from the first leg portion 45 in the standing position, the connecting portion 48 interferes with a member on the vehicle body B side in a state where the main stand 42 is in the storage position. This can be suppressed and a compact storage state of the main stand 42 can be realized.

  In addition, a second stopper portion 46 formed by bending a plate material is provided with a first stopper portion 53 that is in contact with the regulation shaft 53 on the vehicle body B side in the standing position and regulates the rotation end from the storage position to the standing position side. Therefore, it is possible to increase the rigidity of the second leg portion 46, and to facilitate the formation of the first stopper portion 53 integrally with the second leg portion 46, and to connect the connection portion such as welding. Since it can be reduced as much as possible, productivity can be improved and the weight of the main stand 42 can be reduced.

  Furthermore, since the first leg 45 is formed to have an oval cross-sectional shape with the longitudinal direction at the standing position as the major axis direction, the strength and rigidity of the first leg 45 are determined from the operation unit 47. The load can be increased in the direction in which the load is received, and the weight can be reduced as compared with the case of a perfectly circular cross-sectional shape.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various design changes can be made without departing from the present invention described in the claims. Is possible.

  For example, the present invention can also be applied to a main stand that is rotatably supported by a support shaft provided at a lower portion of an engine body that constitutes a vehicle body together with a vehicle body frame.

42 ... main stand 43 ... support shaft 44 ... supported portion 45 ... first leg 46 ... second leg 47 ... operating part 48 ... connecting part 53 ...・ Stopper part B ... Body

Claims (6)

  First and second extending from the supported portion (44) in a pair with the cylindrical supported portion (44) supported by the support shaft (43) provided on the vehicle body (B) side. A leg portion (45, 46) and a standing position where the legs (45, 46) are grounded and parked, and a position where both legs (45, 46) are stored on the vehicle body (B) side. In the main stand of the saddle-ride type vehicle that can move, the first leg portion (45) is formed of a pipe material, and the second leg portion (46) is formed by bending a plate material. A main stand for a saddle-ride type vehicle, characterized in that an operation portion (47) capable of being operated to the standing position side is connected to a first leg portion (45).   The connecting portion (48) connecting the first and second leg portions (45, 46) is more than the connecting portion of the both leg portions (45, 46) to the supported portion (44) in the standing position. The main stand of the saddle-ride type vehicle according to claim 1, wherein the main stand is formed integrally with the second leg portion (46) so as to be positioned below.   The saddle-ride type vehicle according to claim 2, wherein a lower edge of the connecting portion (48) at the standing position on the second leg portion (46) side is formed in an arc shape bulging upward. Main stand.   The main stand of the saddle-ride type vehicle according to claim 2 or 3, wherein the connecting portion (48) is formed to bulge forward from the first leg portion (45) in the standing position. .   A stopper portion (53) that abuts on the vehicle body (B) side at the standing position and restricts the rotation end from the storage position to the standing position side is formed integrally with the second leg portion (46). The main stand of the saddle-ride type vehicle according to claim 1 or 2.   A 1st leg part (45) is formed so that it may have an elliptical cross-sectional shape by making the front-back direction in the said standing position the major axis direction. Main stand for saddle-ride type vehicles.

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