JP6564422B2 - Side stand structure for motorcycles - Google Patents

Description

  The present invention relates to a head pipe that supports a steering handle so that it can be steered, a pair of left and right main frames that extend rearward from the head pipe, and a left and right that are connected to rear ends of the main frames and extend in the vertical direction. A part of the body frame is composed of a pair of pivot frames, and the front part of the swing arm that pivotally supports the rear wheel at the rear end part at the lower part of the pair of left and right pivot frames is the vehicle of the pivot frame on both the left and right sides. A step holder that is arranged so as to be swingable via a support shaft while being arranged on the inner side in the width direction, and that is arranged below the support shaft supports a step that protrudes outward from the step holder in use. A use position that is in contact with and fixed to the lower outer surface of each of the pair of left and right pivot frames, and that enables grounding on the left and right sides of the body frame and the ground A side stand that can be rotated between the stowed position that is lifted rearward in the vehicle longitudinal direction from the service position, and a coil between the side stand and a spring locking portion that is fixedly arranged on the vehicle body frame side. In particular, the present invention relates to an improvement in a side stand structure.

  In the vehicle body frame, a pivot frame that connects the rear part of the main frame and the rear part of the down frame supports the front part of the swing arm that pivotally supports the rear wheel at the rear part, and supports the side stand support part and the spring mechanism. A motorcycle is known from Patent Document 1 in such a manner that a side stand bracket provided with a stop is fixed.

JP 2001-71957 A

  However, in the one disclosed in Patent Document 1, since the spring locking portion is disposed at a position protruding outward from the outer surface of the pivot frame, the step, the side stand support portion, and the spring locking portion are provided. It is necessary to arrange them apart from each other so as not to interfere with each other, and the space for arranging the step, the side stand support part, and the spring locking part becomes large.

  The present invention has been made in view of such circumstances, and an object thereof is to provide a side stand structure in a motorcycle in which a space for arranging a step and a side stand support portion and a spring locking portion is not increased. To do.

In order to achieve the above object, the present invention provides a head pipe that supports a steering handle in a steerable manner, a pair of left and right main frames that extend rearward from the head pipe, and a rear end portion of the main frames. A pair of left and right pivot frames that are installed and extend in the vertical direction form a part of the vehicle body frame, and at the bottom of the pair of left and right pivot frames, the front part of the swing arm that pivotally supports the rear wheel at the rear end part, A step holder that is disposed on the inner side in the vehicle width direction of the pivot frame on both the left and right sides and is supported so as to be swingable via a support shaft, and is disposed below the support shaft. Abuts and is fixed to the lower outer surface of the pair of left and right pivot frames while supporting the step protruding to the left and right sides of the body frame, and can be grounded to the ground The side stand and a spring locking portion fixedly arranged on the vehicle body frame side are provided with a side stand that is capable of rotating between the used position and a retracted position that is raised rearward in the vehicle longitudinal direction from the used position. In a motorcycle in which a coiled spring is provided between the front and rear of the swing arm, the front part is formed to be recessed in the vehicle width direction so that the front part can be disposed on the vehicle width direction inside of the pivot frame. The step holder disposed on the left and right sides of the vehicle body frame includes a side stand support portion that rotatably supports the side stand, and a spring locking portion disposed above the side stand support portion. Provided, and when the spring locking portion overlaps the pivot frame when viewed from the rear along the vehicle longitudinal direction The first being disposed in at least partially overlap a position in a side view in the front portion of the swing arm.

  According to the present invention, in addition to the structure of the first feature, the pivot frame is formed so as to extend up and down by curving the middle part in the vertical direction convexly toward the rear, and the side stand support part is provided with the side stand. Is supported rotatably via a support shaft, and the support shaft and the spring locking portion are disposed in a portion of the step holder that protrudes rearward from the lower portion of the pivot frame, as viewed from the side. The second feature is that the pivot frame is disposed in front of the rear end.

  In the present invention, in addition to the configuration of the second feature, the step holder is integrally provided with an arm portion extending upward from the side stand support portion, and the spring locking portion is formed of the spring locking portion. At least a part of the step is provided at the tip of the arm part so as to be disposed above the upper end of the step in the use state, and the support shaft is in the use state in a side view. The third feature is that it is arranged at a position corresponding to the lower end.

  The present invention is characterized in that, in addition to the configuration of the third feature, the posture of the side stand in the storage position is set so as to form an angle of about 45 degrees with respect to a horizontal line. .

  In addition to the configuration of the fourth feature, the present invention provides the spring locking portion so that at least a part of the spring overlaps the side stand in a side view when the side stand is in the use position. The fifth feature is that the position of the first position is determined.

  In the present invention, in addition to the configuration of the fifth feature, the position of the spring locking portion is determined so that the spring passes forward of the support shaft in a side view when the side stand is in the use position. It is the sixth feature that

  According to the present invention, in addition to any of the first to sixth features, the side stand can be grounded to a stand bar whose one end is rotatably supported by the side stand support portion and to the ground. And a grounding portion provided at the other end of the stand bar, wherein a thinning recess is formed on a side surface of the stand bar that faces downward when in the retracted position. .

  In addition to the structure of the seventh feature, the present invention is characterized in that the ground contact surface of the ground contact portion to the ground is formed in a spherical shape.

  According to the present invention, in addition to the configuration of the first feature, a side stand switch that changes a switching mode between the state in which the side stand is in the use position and the state in the storage position is attached to the step holder. A conductive wire guide portion for routing the conductive wire connected to the side stand switch to the inner side in the vehicle width direction than the spring locking portion is provided on at least one of the step holder and the pivot frame. .

  Furthermore, in addition to the structure of the ninth feature, the present invention is such that the pivot frame is formed so as to extend in the vertical direction with a curved portion that is convexly curved toward the rear in the middle portion in the vertical direction. A tenth feature is that at least a part of the switch and the spring engaging portion is disposed at a position overlapping the curved portion in a top view.

According to the first feature of the present invention, the front part of the swing arm that is recessed inward in the vehicle width direction is disposed inward in the vehicle width direction of the left and right pivot frames, so that the step holder is provided together with the side stand support part. Since the spring locking part can be arranged so that at least a part of the spring locking part overlaps the recessed front part of the swing arm in a side view, the recessed space generated on the side of the front part of the swing arm is effective. Utilizing it , it becomes possible to arrange the spring locking part on the side of the swing arm behind the pivot frame, and even if the step, side stand support part and spring locking part are arranged adjacent to each other in side view The step and the side stand support part are prevented from interfering with the step, the side stand support part and the spring locking part. And it is possible to prevent an increase in size i.e. enlargement of the step holder in the arrangement space of the spring engaging portion.

  Further, according to the second feature of the present invention, the support shaft and the spring locking portion for supporting the side stand on the side stand support portion are located in front of the rear end of the pivot frame in a side view and moreover than the lower portion of the pivot frame. Since the rearwardly projecting portion is disposed on the step holder, the space below the pivot frame can be effectively utilized while avoiding an increase in the size of the step holder.

  According to the third feature of the present invention, a spring locking portion, at least a part of which is disposed above the upper end of the step in use, is provided at the distal end portion of the arm portion extending from the side stand support portion. Since the support shaft is disposed at a position corresponding to the lower end of the step in use in a side view, the support shaft and the spring locking portion are disposed apart from each other while avoiding an increase in the weight of the step holder. Accordingly, the spring force of the spring when the side stand is rotated to the retracted position can be increased, the operating force can be reduced, and the retracted position of the side stand can be maintained well.

  According to the fourth aspect of the present invention, since the side stand is in an attitude of making an angle of about 45 degrees with respect to the horizontal line in the retracted position, the force for rotating and biasing the side stand to the side opposite to the use position. The storage position of the side stand can be maintained better.

  According to the fifth feature of the present invention, at least a part of the spring can be overlapped with the side stand in a side view when in the use position, and the appearance can be enhanced, and the extension of the spring is reduced. Durability can be improved.

  According to the sixth aspect of the present invention, when the side stand is in the use position, the spring passes forward from the rotation center of the side stand in a side view, so that the side stand rotates to the retracted position with the side stand grounded. It can suppress effectively that it moves.

  According to the seventh aspect of the present invention, since the lightening recess is formed on the side surface of the stand bar of the side stand, the side stand can be reduced in weight, and the lower side of the side surface of the stand bar faces downward. Since the lightening recess is formed on the side surface, mud and the like can be prevented from accumulating in the lightening recess.

  According to the eighth aspect of the present invention, since the grounding surface of the grounding portion of the side stand is formed in a spherical shape, stability when contacting the uneven ground can be ensured, and the vehicle can be stopped with the side stand as the use position. This makes it possible to apply to motorcycles with different parking angles and improve versatility.

  According to the ninth feature of the present invention, since the conducting wire connected to the side stand switch attached to the step holder is routed in the vehicle width direction inner side than the spring locking portion at the conducting wire guide portion, the conducting wire extending from the side stand switch is used as the spring. It is easy to route from the inner side in the vehicle width direction of the locking portion to the inner side in the vehicle width direction of the pivot frame.

  Furthermore, according to the tenth feature of the present invention, since at least a part of the side stand switch and the spring locking portion overlaps with the curved portion of the pivot frame in the vertical direction, the side stand switch and the spring locking portion are It can be arranged compactly around the pivot frame.

1 is a side view of a motorcycle according to a first embodiment. It is a principal part enlarged view of FIG. 1 in the state in which a side stand exists in a use position. It is a side view corresponding to Drawing 2 in the state where a side stand exists in a storing position. FIG. 4 is a cross-sectional view taken along line 4-4 of FIG. FIG. 5 is a sectional view taken along line 5-5 of FIG. FIG. 6 is a sectional view taken along line 6-6 of FIG. FIG. 7 is a cross-sectional view taken along line 7-7 in FIG. 6. It is a side view of the motorcycle of a 2nd embodiment. It is a principal part enlarged view of FIG. 8 in the state in which a side stand exists in a use position. FIG. 10 is a sectional view taken along line 10-10 in FIG. 9; It is the 11-11 line sectional view of FIG.

  Embodiments of the present invention will be described with reference to the accompanying drawings. In the following description, the top, bottom, front, back, and left and right refer to the directions viewed from the occupant riding the motorcycle.

  The first embodiment of the present invention will be described with reference to FIGS. 1 to 7. First, in FIG. 1, a body frame FA of the motorcycle includes a front fork 11 that supports a front wheel WF, and a bar-like operation. A head pipe 13 that supports the steering handle 12 so as to be steerable, a pair of left and right main frames 14 extending rearwardly downward from the headpipe 13, and a rearwardly lowering of the head pipe 13 at an acute angle than the main frames 14 A down frame 15 that extends, a pair of left and right lower frames 16 that are connected to a lower end portion of the down frame 15 via a joint 20 and extend rearward, a rear end portion of the main frame 14, and a rear end of the lower frame 16 From a pair of left and right pivot frames 17 extending up and down connecting the parts, and from the upper ends of the pivot frames 17 Comprises a pair of left and right seat rails 18 extending towards, and a pair of left and right rear frames 19 for connecting the front-rear direction intermediate portion of the vertically intermediate portion and the both seat rails 18 of the pair of left and right pivot frames 17.

The pivot frame 17 is formed so as to extend in the vertical direction with its vertical middle portion convexly convex backward, and the front portion of the rear frame 19 is coupled to the vertical middle portion.

  An engine E is disposed in a space surrounded by the main frame 14, the down frame 15, the joint 20, the lower frame 16, and the pivot frame 17. A front portion of the engine E is a first engine. Supported by the joint 20 via a hanger 21, the lower part of the engine E is supported by a second engine hanger 22 provided on the lower frame 16, and the upper part of the engine E is connected to the upper part of the pivot frame 17. It is supported via a third engine hanger 23.

  2 and 3 together, a front portion 24a of the swing arm 24 that pivotally supports the rear wheel WR at the rear end portion is vertically moved via the support shaft 25 at the lower portion of the pair of left and right pivot frames 17. A link mechanism 26 is provided between a lower cross member (not shown) that connects between the lower end portions of the pair of left and right pivot frames 17 and a swing arm 24, and is supported by the swinging arm 24. A cushion unit 29 is provided between an upper cross member 27 that connects the parts and a link member 28 that forms a part of the link mechanism 26.

  A transmission (not shown) is accommodated in a crankcase 30 provided in the engine E, and an output shaft 31 of the transmission protrudes leftward from the crankcase 30. The output shaft 31 and the rear wheel A transmission means 34 using an endless chain 33 is provided between the WR axle 32.

  A fuel tank 35 is provided on both main frames 14 above the engine E, and a riding seat 36 is disposed behind the fuel tank 35 so as to be supported by the seat rail 18.

  Referring also to FIG. 4, the front portion 24a of the swing arm 24 is formed to be recessed inward in the vehicle width direction so as to be disposed inward in the vehicle width direction of the pair of left and right pivot frames 17. The pair of left and right pivot frames 17 are swingably supported via the support shaft 25.

  Further, step holders 39 disposed below the support shaft 25 while supporting the step 38 are abutted and fixed to the lower outer surfaces of the pair of left and right pivot frames 17, respectively. Also, on the left and right sides of the vehicle body frame FA, on the left side in this embodiment, the use position (position shown in FIG. 2) enabling grounding to the ground, and the vehicle position are lifted rearward in the longitudinal direction of the vehicle. A side stand 40 capable of rotating between the storage position (the position shown in FIG. 3) is disposed, and between the side stand 40 and a spring locking portion 39a fixedly disposed on the vehicle body frame FA side. Is provided with a coiled spring 41.

  The step holder 39 is abutted and fixed to the lower outer surface of the pivot frame 17 by a first bolt 42 and a second bolt 43 disposed at a position spaced rearward from the first bolt 42. The The step holder 39 is provided with a step support portion 44 that rotatably supports the step 38, and the step support portion 44 is disposed obliquely above and forward of the first bolt 42. A first support protrusion 39b protruding integrally with the holder 39 and a second support protrusion protruding integrally with the step holder 39 with the second bolt 43 sandwiched between the first support protrusion 39b. The first and second support protrusions 39b and 39c protrude outward from the step holder 39 in parallel with each other.

  The step support portion 44 supports the step 38 through a first support bolt 45 so as to be rotatable. The step 38 is used in a state where the rider's feet are placed on the step holder 39. It is possible to rotate between a protruding position protruding outward from the folding position positioned close to the step holder 39 side. The first support bolt 45 is inserted into the first and second support protrusions 39b and 39c so that the enlarged head 45a is brought into contact with and engaged with the upper surface of the first support protrusion 39b. 2 A nut 46 that is screwed into the projecting portion of the first support bolt 45 downward from the support projection 39c is brought into contact with and engaged with the lower surface of the second support projection 39c.

  Of the pair of left and right step holders 39, a side stand 40 is rotatably supported by the step holder 39 disposed on the left side of the vehicle body frame FA. A side stand support portion 39d that rotatably supports the side stand 40 and a spring locking portion 39a that is disposed above the side stand support portion 39d are provided in a portion that protrudes rearward from the lower portion of the side stand.

  As clearly shown in FIG. 4, the spring engaging portion 39a overlaps the pivot frame 17 when viewed from the rear along the vehicle front-rear direction, and as clearly shown in FIGS. 2 and 3, the swing arm 39a is seen in a side view. 24 is arranged at a position where at least a part (most part in this embodiment) overlaps 24. Moreover, at least a part (most part in this embodiment) of the spring locking portion 39a is arranged above the upper end of the step 38 in the use state as shown in FIGS. Yes, most of the spring engaging portion 39a is disposed above the first horizontal line HL1 passing through the upper end of the step 38 in a side view.

  The side stand support part 39d is formed in a flat plate shape so as to protrude rearward under the spring locking part 39a. Further, the left step holder 39 is integrally provided with an arm portion 39e extending upward from the side stand support portion 39d, and the spring locking portion 39a is provided at the tip of the arm portion 39e.

  The side stand 40 is provided at the other end of the stand bar 40a that can be grounded to the ground, and a stand bar 40a having a supported portion 40b supported at the one end by a side stand support portion 39d. The supported portion 40b, which is formed in a bifurcated shape so as to sandwich the side stand support portion 39d from both sides, is formed via a second support bolt 47 as a support shaft. The side stand support portion 39d is rotatably supported.

  The second support bolt 47 supports the supported portion 40b and the side stand by abutting and engaging an enlarged head portion (not shown) with an outer surface facing the inner side in the vehicle width direction of the supported portion 40b. A nut 48 is screwed into the protruding portion of the second support bolt 47 that is inserted through the portion 39d and faces the outer side in the vehicle width direction of the supported portion 40b.

  The axis of the second support bolt 47 rises toward the outside in the vehicle width direction in the upright state of the motorcycle so that the grounding portion 40c is stably grounded when the motorcycle is parked with the vehicle body tilted to the left. The position is set so as to be inclined.

  Moreover, the second support bolt 47 and the spring locking portion 39a are disposed in front of the rear end 17a of the pivot frame 17 in a side view. That is, the side stand support part 39d and the spring locking part 39a are arranged in front of the first vertical line VL1 passing through the rear end 17a of the pivot frame 17 in a side view. Further, as clearly shown in FIGS. 2 and 3, the second support bolt 47 is disposed at a position corresponding to the lower end of the step 38 in the use state in a side view, and the step in the side view. A second horizontal line HL <b> 2 passing through the lower end of 38 passes through the second support bolt 47.

  The spring 41 includes a coil portion 41a, a first connecting portion 41b extending linearly from one end of the coil portion 41a, and a second connecting portion 41c extending linearly from the other end of the coil portion 41a. The leading end of the first connecting portion 41b is locked to the spring locking portion 39a, and the leading end of the second connecting portion 41c is locked to a locking shaft 49 provided near the grounding portion 40c of the stand bar 40a. The

  As shown in FIG. 2, the step holder 39 on the left side in the vicinity of the side stand support portion 39d abuts against one end of the stand bar 40a in a state where the side stand 40 is in the use position, and the use position of the side stand 40 is used. A use position side stopper 39f that determines the storage position of the side stand 40 by contacting one end of the stand bar 40a with the side stand 40 in the storage position as shown in FIG. Is provided.

  Moreover, the storage position side stopper 39g is formed so that the angle α with respect to the horizontal line, for example, the second horizontal line HL2, is approximately 45 degrees in the side stand 40 in the state of being in the storage position.

  In the state where the side stand 40 is in the use position shown in FIG. 2, at least a part of the spring 41 (in this embodiment, most part including all of the coil portion 41a) overlaps the side stand 40 in a side view. Thus, the position of the spring locking portion 39a is determined, and the spring 41 passes forward of the second support bolt 47 in a side view when the side stand 40 is in the use position. The position of the spring locking portion 39a is determined.

  Referring also to FIG. 5, a lightening recess 50 is formed on a side surface of the side stand 40 that faces downward when in the storage position of the stand bar 40 a. It is formed long along the longitudinal direction of the stand bar 40a.

  6 and 7 together, the grounding surface 51 of the grounding portion 40c in the side stand 40 is formed in a spherical shape.

Next, the operation of the first embodiment will be described . The front portion 24a of the swing arm 24 is arranged in the vehicle width direction so that the front portion 24a can be disposed inside the pair of left and right pivot frames 17 in the vehicle width direction. is formed recessed inwardly, the step holder 39 is disposed on the left side of the body frame FA, and the side stand support portion 39d for supporting the side stand 40 rotatably, a spring which is arranged above the side stand supporting portion 39d The spring engaging portion 39a overlaps the pivot frame 17 when viewed from the rear along the vehicle front-rear direction and at least partially overlaps the front portion 24a of the swing arm 24 in a side view. Since it is arranged, the spring provided on the left step holder 39 together with the side stand support part 39d The stopper portion 39a, that at least a portion of the spring engaging portion 39a is to overlap with the front portion 24a of the swing arm 24 in a side view, recessed space occurs on the side of the front 24a of the swing arm 24 It is possible to arrange the step 38 and the side of the swing arm 24 behind the pivot frame 17 by effectively utilizing the step frame 38, even if the step 38, the side stand support part 39d and the spring locking part 39a are arranged adjacently in a side view. The step 38, the side stand support part 39d and the spring locking part 39a do not interfere with each other, and the arrangement space between the step 38, the side stand support part 39d and the spring locking part 39a is increased, that is, the step holder 39 is large. Can be prevented.

  Further, the pivot frame 17 is formed so as to extend upward and downward by curving the middle part in the vertical direction toward the rear, and the side stand 40 can be rotated by the side stand support part 39d via the second support bolt 47. The second support bolt 47 and the spring locking portion 39a are disposed on a portion of the left step holder 39 that protrudes rearward from the lower portion of the pivot frame 17, and in a side view. Since it is arranged in front of the rear end 17a of the pivot frame 17, the space below the pivot frame 17 can be used effectively while avoiding an increase in the size of the step holder 39.

  Further, the left step holder 39 is integrally provided with an arm portion 39e extending upward from the side stand support portion 39d, and the spring locking portion 39a is in a state of using at least a part of the spring locking portion 39a. The second support bolt 47 is provided at the distal end of the arm portion 39e so as to be disposed above the upper end of the step 38 in the position corresponding to the lower end of the step 38 in the use state in a side view. Therefore, the second support bolt 47 and the spring locking portion 39a can be spaced apart from each other while avoiding an increase in the weight of the step holder 39, whereby the side stand 40 is moved to the storage position. The spring force of the spring 41 during rotation is increased, the operation force is reduced, and the storage position of the side stand 40 is maintained well. It can be.

  Further, since the posture of the side stand 40 in the storage position is set to make an angle of about 45 degrees with respect to the horizontal line, the force for rotating and biasing the side stand 40 to the side opposite to the use position is increased. The storage position of the side stand 40 can be maintained better.

  Further, since the position of the spring engaging portion 39a is determined so that at least a part of the spring 41 overlaps the side stand 40 in a side view when the side stand 40 is in the use position, it is in the use position. In this state, at least a part of the spring 41 overlaps the side stand 40 in a side view, so that the appearance can be improved, the extension of the spring 41 can be reduced, and the durability of the spring 41 can be improved.

  Further, since the position of the spring locking portion 39a is determined so that the spring 41 passes forward of the second support bolt 47 in a side view when the side stand 40 is in the use position, the side stand 40 is grounded. In this state, the side stand 40 can be effectively prevented from rotating to the storage position.

  Further, the side stand 40 has a stand bar 40a whose one end portion is rotatably supported by the side stand support portion 39d, and a grounding portion 40c provided at the other end portion of the stand bar 40a so as to be groundable to the ground. In addition, since the thinning recess 50 is formed on the side of the stand bar 40a facing downward while being in the storage position, mud or the like accumulates in the thinning recess 50 while reducing the weight of the side stand 40. Can be prevented.

  Further, since the ground contact surface 51 of the ground contact portion 40c is formed in a spherical shape, it is possible to ensure stability when contacting the rough ground, and the parking angle when the side stand 40 is parked as the use position is different. Application to a motorcycle is possible, and versatility can be improved.

  A second embodiment of the present invention will be described with reference to FIGS. 8 to 11, but the parts corresponding to the first embodiment are indicated by the same reference numerals and shown in detail. The detailed explanation is omitted.

  First, in FIG. 8, a motorcycle body frame FB includes a head pipe 13, a pair of left and right main frames 14 extending rearwardly downward from the head pipe 13, and the head pipe 13 at a steeper angle than the main frame 14. A down frame 15 extending rearwardly, a pair of left and right lower frames 16 connected to the lower end portion of the down frame 15 via a joint 20 and extending rearward, a rear end portion of the main frame 14 and the lower frame 16 A pair of left and right pivot frames 57 extending between the rear ends of the pivot frames 57, a pair of left and right seat rails 18 extending rearward from the upper ends of the pivot frames 57, and an intermediate portion in the vertical direction of the pair of left and right pivot frames 57 And a pair of left and right rear frames connecting the middle portions of the seat rails 18 in the front-rear direction. And an over-time 19.

  The pivot frame 57 is formed to have a curved portion 57b curved in a convex manner toward the rear so as to extend in the vertical direction, and to extend vertically. The parts are connected.

  A front portion of the engine E is supported by the joint 20 via a first engine hanger 21, and a lower portion of the engine E is supported by a second engine hanger 22 provided on the lower frame 16, The upper part is supported on the upper part of the pivot frame 57 via the third engine hanger 23.

  Referring also to FIG. 9, the front portion 24 a of the swing arm 24 that pivotally supports the rear wheel WR at the rear end portion can swing up and down via the support shaft 25 at the lower portion of the pair of left and right pivot frames 57. It is supported by.

  Step holders 59 disposed below the support shaft 25 while supporting the step 38 are abutted and fixed to the lower outer surfaces of the pair of left and right pivot frames 57, respectively. Further, a side stand 40 is disposed on the left side of the body frame FB, and a coiled spring 41 is provided between the side stand 40 and a spring locking portion 59a fixedly disposed on the body frame FB side.

  As in the first embodiment, the step holder 59 disposed on the left side of the vehicle body frame FB includes first and second support protrusions that protrude outward from the step holder 59 in parallel with each other. A step support portion 54 composed of 59b and 59c is provided, and the step support portion 54 is provided with the first support bolt 45 while the step 38 can rotate between the projecting position and the folding position. Supported through.

  A side stand 40 is rotatably supported by the step holder 59 disposed on the left side of the vehicle body frame FB, and protrudes rearward from the lower portion of the pivot frame 57 in the left side step holder 59. The portion is provided with a side stand support portion 59d that rotatably supports the supported portion 40b of the side stand 40 and the spring locking portion 59a that is disposed above the side stand support portion 59d.

  As clearly shown in FIG. 10, the spring locking portion 59a overlaps with the pivot frame 57 when viewed from the rear along the vehicle front-rear direction, and at least on the swing arm 24 in a side view as clearly shown in FIG. A part (all in the second embodiment) is arranged at an overlapping position. In addition, at least a part (all in this second embodiment) of the spring locking portion 59a is disposed above the upper end of the step 38 in use as shown in FIG. All of the spring locking portions 59a are disposed above the first horizontal line HL1 passing through the upper end of the step 38 in a side view.

  The side stand support part 59d is formed in a flat plate shape so as to protrude rearward below the spring locking part 59a. Further, the left step holder 59 is integrally provided with an arm portion 59e extending upward from the side stand support portion 59d, and the spring locking portion 59a is provided at the tip of the arm portion 59e.

  A bifurcated supported portion 40b at one end of the stand bar 40a of the side stand 40 is rotatably supported by the side stand support portion 59d via a second support bolt 47 and a nut 48.

  Moreover, the second support bolt 47 and the spring locking portion 59a are disposed in front of the rear end 57a of the pivot frame 57 in a side view. That is, the side stand support part 59d and the spring locking part 59a are arranged in front of the second vertical line VL2 passing through the rear end 57a of the pivot frame 57 in a side view. Further, as clearly shown in FIG. 9, the second support bolt 47 is disposed at a position corresponding to the lower end of the step 38 in the use state in the side view, and the lower end of the step 38 in the side view. A second horizontal line HL2 passing through the second support bolt 47 passes through the second horizontal line HL2.

  The tip of the linear first connecting part 41b of the spring 41 is locked to the spring locking part 59a, and the tip of the second connecting part 41c is provided near the grounding part 40c of the stand bar 40a. Locked to the locking shaft 49.

  As shown in FIG. 9, the step holder 59 on the left side in the vicinity of the side stand support portion 59d abuts against one end of the stand bar 40a in a state where the side stand 40 is in the use position, and the use position of the side stand 40 is used. And a storage position side stopper 59g that contacts the one end of the stand bar 40a and determines the storage position of the side stand 40 with the side stand 40 in the storage position.

  In a state where the side stand 40 is in the use position shown in FIG. 9, at least a part of the spring 41 (in this embodiment, most of the first connecting part 41b and most of the coil part 41a) is seen in the side view. The position of the spring locking portion 59a is determined so as to overlap the position 40, and the spring 41 is more than the second support bolt 47 in a side view when the side stand 40 is in the use position. The position of the spring locking portion 59a is determined so as to pass forward.

  Further, above the spring engaging portion 59a, when the motorcycle is in a nose lift state, the endless chain 33 provided between the output shaft 31 of the transmission and the axle 32 of the rear wheel WR is disposed above the spring engaging portion 59a. A roller 60 is disposed for contact with the chain 30 to prevent interference with the vehicle body side of the chain 30, and this roller 60 is integrally connected to the upper portion of the curved portion 57 b of the pivot frame 57 and extends rearward. The support arm 57c is pivotally supported at the front end (the rear end in the vehicle front-rear direction).

  Referring also to FIG. 11, the left side step holder 59 has a side stand switch 61 that changes the switching mode between the state in which the side stand 40 is in the use position and the state in which the side stand 40 is in the storage position. Mounted.

  In this embodiment, the side stand switch 61 is a rotary switch that is coaxial with the rotation axis of the side stand 40, that is, the second support bolt 47, and the case 62 of the side stand switch 61 is attached to the left side step holder 59. The third bolt 63 disposed in front of the side stand support portion 59d is fastened to the step holder 59 and the fourth bolt 64 disposed on the rear upper side of the side stand support portion 59d is on the storage position side. Fastened to the stopper 59g.

  Moreover, at least a part of the side stand switch 61 and the spring engaging part 59a (in the second embodiment, the part of the side stand switch 61 and the spring engaging part 59a) is the pivot frame 57 in a top view. As shown in FIG. 10, a vertical surface VP passing through the outer surface in the vehicle width direction of the bending portion 57b connects the side stand switch 61 and the spring locking portion 59a. A relative position in the vehicle width direction of the curved portion 57b, the side stand switch 61 and the spring locking portion 59a is set so as to pass.

  A lead wire 65 is led out from the side stand switch 61, and the rotation position information of the side stand 40 obtained by the side stand switch 61 is as shown in FIG. The lead wire 65 is led to the control unit 66 mounted on the motorcycle so as to be disposed above the pivot frame 57. The control unit 66 controls the motorcycle so that it cannot travel when the side stand 40 is in a use position in contact with the ground.

  Conductive wire guide portions 67 and 68 for routing the conductive wire 65 led out from the side stand switch 61 to the inner side in the vehicle width direction than the spring locking portion 59a are provided on at least one of the step holder 59 and the pivot frame 57. In this second embodiment, the step holder 59 is provided with a first conductor guide portion 67, and the pivot frame 57 is provided with a second conductor guide portion 68.

  The first conducting wire guide portion 67 is integrally connected to the spring engaging portion 59a of the step holder 59, and the conducting wire 65 extending upward from the side stand switch 61 is connected to the spring engaging portion 59a. It is formed in a substantially C shape so as to be held inside in the width direction.

  The second conductive wire guide portion 68 includes a guide member 69 fastened to an inner surface in the vehicle width direction of a support plate portion 57d that is integrally connected to a lower portion of the curved portion 57b of the pivot frame 57 and protrudes rearward in the vehicle front-rear direction. In this embodiment, the rear end of the support plate portion 57d is the rear end 57a of the pivot frame 57.

  The guide member 69 extends vertically up and down corresponding to the support plate portion 57d, and the conductive wire 65 is disposed on the inner side in the vehicle width direction of the guide member 69 at the lower end portion, the vertical middle portion and the upper end portion. Holding portions 69a, 69b, and 69c formed in a substantially C shape so as to be held are integrally formed.

  Moreover, the guide member 69 is fastened to the support plate portion 57d by a pair of screw members 70 disposed between the holding portions 69a and 69b and between the holding portions 69b and 69c.

  The second conductive wire guide portion 68 guides the conductive wire 65 so as to extend in the vehicle width direction inside of the curved portion 57b of the pivot frame 57 in the vertical direction. From the second conductive wire guide portion 68, the second conductive wire guide portion 68 The conducting wire 65 extending toward the control unit 66 is routed vertically in the vehicle width direction outer side of the roller 60 and in the vehicle width direction inner side of the pivot frame 57, so that the conducting wire 65 is traveling in a motorcycle. Thus, it is possible to prevent the chain 33 and the occupant from being worn.

  According to the second embodiment, the same effects as those of the first embodiment can be obtained, and the side stand 40 is in a use position and a storage position. A side stand switch 61 for changing the switching mode is attached to the step holder 59, and the first and second lead guides for routing the lead wire 65 connected to the side stand switch 61 to the inner side in the vehicle width direction than the spring locking portion 59a. Since the portions 67 and 68 are provided on at least one of the step holder 59 and the pivot frame 57 (both in the second embodiment), the conductor 65 extending from the side stand switch 61 is connected to the vehicle width of the spring locking portion 59a. It is easy to route the vehicle so that it passes from the inner side in the vehicle width direction of the pivot frame 57.

  Further, the pivot frame 57 is formed so as to extend vertically with a curved portion 57b curved in a convex manner toward the rear, and at least one of the side stand switch 61 and the spring locking portion 59a. Since the portion is disposed at a position overlapping the curved portion 57 b when viewed from above, the side stand switch 61 and the spring locking portion 59 a can be compactly disposed around the pivot frame 57.

  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.

12 ... Steering handle 13 ... Head pipe 14 ... Main frame 17, 57 ... Pivot frame 17a, 57a ... Pivot frame rear end 24 ... Swing arm 24a ... Swing arm Front part 25 ... support shaft 38 ... steps 39, 59 ... step holders 39a, 59a ... spring locking parts 39d, 59d ... side stand support parts 39e, 59e ... arm part 40 ... Side stand 40a ... Stand bar 40c ... Grounding part 41 ... Spring 47 ... Second support bolt 50 as support shaft ... Thinning recess 51 ... Grounding surface 57b ...・ Bending portion 61... Side stand switch 65 .. Conductors 67 and 68... Conductor guide portions FA and FB.

Claims (10)

A head pipe (13) that supports the steering handle (12) in a steerable manner, a pair of left and right main frames (14) extending rearward from the head pipe (13), and rear ends of the main frames (14) A part of the vehicle body frame (FA, FB) is formed by a pair of left and right pivot frames (17, 57) which are connected to each other and extend in the vertical direction, and are formed below the pair of left and right pivot frames (17, 57). The front portion (24a) of the swing arm (24) that pivotally supports the rear wheel (WR) at the rear end portion is disposed on the inner side in the vehicle width direction of the pivot frames (17, 57) on both the left and right sides. 25), the step holder (39, 59) supported so as to be swingable and disposed below the support shaft (25) protrudes outward from the step holder (39, 59) in use. Step (38) is supported and fixed to the lower outer surfaces of the pair of left and right pivot frames (17, 57), respectively, and can be grounded to the ground on the left and right sides of the body frame (FA, FB). And a side stand (40) capable of rotating between the storage position raised from the use position to the rear in the vehicle front-rear direction, the side stand (40) and the vehicle body frame (FA, In the motorcycle in which a coiled spring (41) is provided between the spring engaging portion (39a, 59a) fixedly disposed on the FB) side,
A front portion (24a) of the swing arm (24) is formed to be recessed inward in the vehicle width direction so that the front portion (24a) can be disposed on the inner side in the vehicle width direction of the pivot frame (17, 57). ,
Side stand support portions (39d, 59d) for rotatably supporting the side stand (40) on the step holders (39, 59) disposed on the left and right sides of the body frame (FA, FB), and the side stand The spring locking portions (39a, 59a) disposed above the support portions (39d, 59d) are provided, and the spring locking portions (39a, 59a) are viewed from the rear along the vehicle front-rear direction. A side stand structure in a motorcycle, wherein the side stand structure is disposed at a position that overlaps the pivot frame (17, 57) and at least partially overlaps the front portion (24a) of the swing arm (24) in a side view.   The pivot frame (17, 57) is formed so as to bend upward and downward with its vertical middle part protruding upward, and the side stand support part (39d, 59d) supports the side stand (40). The shaft (47) is rotatably supported, and the support shaft (47) and the spring locking portions (39a, 59a) are connected to the pivot frame (17, 57) of the step holder (39, 59). And the rear end (17a, 57a) of the pivot frame (17) in a side view. 2. A side stand structure for a motorcycle according to 1.   The step holder (39, 59) is integrally provided with an arm portion (39e, 59e) extending upward from the side stand support portion (39d, 59d), and the spring locking portion (39a, 59a) At least a part of the spring locking portion (39a, 59a) is provided at the tip of the arm portion (39e, 59e) so as to be disposed above the upper end of the step (38) in the use state. The side stand structure for a motorcycle according to claim 2, wherein the support shaft (47) is disposed at a position corresponding to a lower end of the step (38) in the use state in a side view. .   The side stand structure in a motorcycle according to claim 3, wherein the posture of the side stand (40) in the storage position is set to make an angle of about 45 degrees with respect to a horizontal line.   In a state where the side stand (40) is in the use position, the spring locking portions (39a, 59a) are arranged such that at least a part of the spring (41) overlaps the side stand (40) in a side view. The side stand structure in a motorcycle according to claim 4, wherein the position of the motorcycle is determined.   The positions of the spring locking portions (39a, 59a) are determined so that the spring (41) passes forward of the support shaft (47) in a side view when the side stand (40) is in the use position. The side stand structure for a motorcycle according to claim 5, wherein the side stand structure is used.   The side stand (40) includes a stand bar (40a) whose one end is rotatably supported by the side stand support portions (39d, 59d), and the other end of the stand bar (40a) that can be grounded to the ground. And a grounding recess (50) formed on a side surface of the stand bar (40a) facing downward in the state of being in the storage position. The side stand structure in the motorcycle according to any one of claims 1 to 6.   The side stand structure for a motorcycle according to claim 7, wherein a ground contact surface (51) of the ground contact portion (40c) is formed in a spherical shape.   A side stand switch (61) is mounted on the step holder (59) to change the switching mode between the state where the side stand (40) is in the use position and the state where the side stand is in the retracted position. Conductor guides (67, 68) for routing the conductor (65) connected to (61) to the inner side in the vehicle width direction than the spring locking part (59a) include the step holder (59) and the pivot frame (57). The side stand structure for a motorcycle according to claim 1, wherein the side stand structure is provided on at least one of the two sides.   The pivot frame (57) is formed to have a curved portion (57b) that is curved in a convex manner toward the rear, and to extend vertically with the middle portion in the vertical direction, and the side stand switch (61) and the spring lock The side stand structure for a motorcycle according to claim 9, wherein at least a part of the portion (59a) is disposed at a position overlapping the curved portion (57b) in a top view.

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