JP5570376B2 - Step-stay structure for saddle-ride type vehicles - Google Patents

Description

  The present invention relates to a step stay structure for supporting a step for a passenger of a saddle riding type vehicle such as a motorcycle.

  In a straddle-type vehicle such as a motorcycle, a step stay for mounting a passenger's foot is attached to the side of the vehicle body (for example, Patent Document 1). In general, the step stay includes a step portion on which a rider's foot is placed, and a stay portion that is attached to the step frame so as to be freely laid down and supported by the vehicle body frame.

JP-A-63-1212283

  However, in the step stay of Patent Document 1, it is necessary to change the shape of the stay portion in order to adjust the position of the step portion every time the body frame is changed, and it is difficult to select the position of the step portion.

  The present invention has been made in view of the above problems, and an object thereof is to provide a straddle-type vehicle step stay structure capable of easily selecting the position of the step portion without changing the shape of the step stay. .

  In order to achieve the above object, a step stay structure for a saddle-ride type vehicle according to the present invention includes a step stay that supports a step for a passenger detachably supported by a relay bracket separate from the step stay. A bracket is detachably supported on the vehicle body frame.

  According to this configuration, since the step stay is supported by the vehicle body frame via the separate relay bracket, the position of the step can be adjusted by changing the relay bracket even if the shape of the frame changes. Thus, the position of the step can be easily selected without changing the shape of the step stay.

  In the present invention, the step stay is preferably supported by the relay bracket via an elastic support for suppressing vibration transmission. According to this configuration, since the elastic support for vibration transmission suppression is interposed between the step stay and the relay bracket, it is possible to prevent vibration from the engine and the vehicle body from being transmitted to the passenger's foot. Can do.

  In this invention, it is preferable that the said step stay is latched by the said relay bracket by the elastic member arrange | positioned at the back side of a step. According to this structure, an elastic member can be arrange | positioned in the part which has room in the space of the back side of a step stay.

  When the step stay is locked by an elastic member, a concave portion for accommodating the elastic member is formed at a position corresponding to the back side of the step mounting bracket in the step stay to allow the vehicle to be displaced outward in the left-right direction. However, it is preferable to suppress the displacement of the step stay inward. According to this configuration, it is possible to absorb the vibration on the stay side caused by the load fluctuation caused by the movement of the passenger's foot, and to suppress mainly the transmission of the engine vibration from the relay bracket side.

  In this invention, it is preferable that the said relay bracket is supported by the bracket support part spaced apart in the up-down direction in the said vehicle body frame, and the said step stay is supported by the stay support part spaced apart in the front-back direction in the said relay bracket. According to this configuration, the step stay is stably supported on the vehicle body frame via the relay bracket.

  Furthermore, it is preferable that the elastic member is disposed below a stay supported portion supported by the plurality of stay supporting portions in the step stay, and a weight for vibration isolation is disposed above. According to this configuration, the vibration around the longitudinal axis is suppressed by the elastic member disposed below the stay supported portion and the antivibration weight disposed above, so the longitudinal axis on which the weight of the passenger is applied. Around vibrations can be suppressed.

  According to the straddle-type vehicle step stay structure of the present invention, since the step stay is supported on the vehicle body frame via a separate relay bracket, the relay bracket is changed even if the shape of the frame changes. Thus, since the position of the step can be adjusted, it is possible to easily select the position of the step without changing the shape of the step stay.

1 is a right side view showing a rear portion of a motorcycle including a step stay structure according to a first embodiment of the present invention. It is a right view which shows the step stay in the step stay structure. It is a rear view of the step stay. (A) is a right view which shows the relay bracket in the step stay structure, (B) is a rear view. It is the perspective view which looked at the step stay from the back side. It is the perspective view which looked at the state which attached the brake pedal and the master cylinder to the step stay from the back side. It is VII-VII sectional drawing of FIG. It is VIII-VIII sectional drawing of FIG.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 shows a rear portion of a motorcycle to which the present invention is applied. A body frame FR of the motorcycle includes a main frame 1 constituting the front half and a rear frame 2 constituting the rear half, and the front wheels are supported on the front end of the main frame 1 via a front fork (not shown). A swing arm bracket 12 is provided at the lower rear end of the main frame 1. A swing arm 14 is supported on the swing arm bracket 12 via a pivot shaft 13 at the front end so as to be swingable up and down. A rear wheel 16 is supported at the rear end. An engine E is supported at the center lower portion of the main frame 1, and the rear wheels 16 are driven by the engine E. The exhaust of the engine E is discharged to the outside through an exhaust pipe 19 extending rearward through the front and lower sides of the engine E through a muffler 21 on the side of the rear wheel 16.

  A rider's seat 18 and a passenger's seat 20 are supported on the rear frame 2. The rear side of the rear frame 2 is covered with a rear cover 22. A rear fender 24 is attached to the lower portion of the rear frame 2. Below the rider's seat 18, a single-wheel rear shock absorber 23 is disposed between the main frame 1 and the swing arm 14 in the front-rear direction. A passenger step 28 is supported via a step bracket 26 below the rider seat 18 in the rear frame 2 and above the muffler 21. A pair of left and right step brackets 26 and passenger steps 28 are provided. An auxiliary tank 29 of a master cylinder 27 for braking is attached to the step bracket 26 on the right side of the vehicle body.

  A pair of left and right step stays 30 that support the rider's step 31 are supported by the swing arm bracket 12 and are positioned between the swing arm bracket 12 and the rear wheel 16. Each step stay 30 is detachably supported by the swing arm bracket 12 which is a part of the vehicle body frame FR via a relay bracket 32 (FIG. 4) described later.

  As shown in FIG. 2, the step stay 30 is a steel casting, and has a substantially V-shape that is opened rearward (leftward in FIG. 2) in a state of being attached to the vehicle body, and forms a front portion 34. And two upper and lower projecting portions 36 and 38 projecting rearward. First to third through holes 40, 42, 44 are provided in the base portion 34 side by side in the vertical direction. Of the three through holes 40, 42, 44, the fourth through hole is located behind the second through hole 42 between the uppermost first through hole 40 and the lowermost third through hole 44. 46 is provided. That is, the 2nd through-hole 42 and the 4th through-hole 46 are arrange | positioned along with the front-back direction substantially. A fifth through hole 48 is formed above the fourth through hole 46, and a sixth through hole 50 is formed obliquely rearward below the fourth through hole 46. The sixth through hole 50 is arranged at the edge of the intersection with the upper and lower protrusions 36 and 38.

  A step mounting bracket 54 that supports the rider's step 31 is integrally formed at the center of the lower protrusion 38. As shown in FIG. 3, the step mounting bracket 54 is composed of two projecting pieces having opposite surfaces protruding outward, and shaft insertion holes 54 a are formed on the opposing surfaces of the projecting pieces 54, 54. The support part 31a of step 31 is inserted between the both projecting pieces 54, 54, a bolt (not shown) is inserted into the shaft insertion hole 54a of each projecting piece 54 and the support part 31a of step 31, and tightened with a nut member (not shown). Thus, the step 31 is supported by the step stay 30 so as to be able to fall down. A recess 61 for accommodating a damper 59 as an elastic member is provided at a position corresponding to the step mounting bracket 54 on the back surface (inner side) of the lower protrusion 38.

  The bases of the projecting pieces 54 are connected to each other by a pedestal portion 49 formed to bulge outward from the lower projecting portion 38 of the step stay 30. By forming the pedestal portion 49, the support rigidity of each protruding piece 54 is increased. Further, when the step stay 30 is manufactured by molding, a recess is formed inside the pedestal portion 49 in order to prevent an increase in thickness near the step 31, and this recess is used as the recess 61. Yes. As described above, the concave portion 61 is formed in the portion reinforced by the pedestal portion 49, so that it is possible to prevent the support strength of step 31 from being lowered due to the formation of the concave portion 61.

  As shown in FIG. 4A, the relay bracket 32 is formed by bending a metal plate material, and is disposed on the back surface of the step stay 30R so as not to be exposed to the outside in a side view. The step stay 30 is formed smaller. First and second insertion holes 58 and 62 are formed at positions corresponding to the first and third through holes 40 and 44 (FIG. 2) in the relay bracket 32, and the second and fourth through holes 42 are formed. , 48 (FIG. 2), first and second screw holes 60, 64 are formed. A pin 65 in FIG. 4B that protrudes toward the recess 61 is formed at a position corresponding to the recess 61 (FIG. 5) in the relay bracket 32. In the central portion of the relay bracket 32 shown in FIG. 4A, lightening holes 66A and 66B for weight reduction are formed. In the present embodiment, two rectangular lightening holes 66A and 66B arranged vertically in the center are provided, but the number, shape, and the like are not limited thereto.

  As shown in FIG. 5, the back surface of the step stay 30 is formed with a spring support portion 68 protruding inward of the vehicle body at a position corresponding to the upper hollow hole 66A of the relay bracket 32. A brake switch support portion 70 protruding inward of the vehicle body is formed at a position corresponding to 66B. The spring support portion 68 and the brake switch support portion 70 respectively penetrate the upper and lower lightening holes 66A and 66B.

  A dynamic damper 52 is attached to the back surface of the upper protrusion 36 in the step stay 30. The dynamic damper 52 includes an annular damper 53 having a damping capability and an annular vibration isolating weight 55 fitted to the outer periphery thereof, and the vibration isolating is performed via the damper 53 by a fixing member 51 such as a bolt. A weight 55 is attached to the step stay 30. The dynamic damper 52 is provided at a location away from the third and fourth through holes 44, 46, specifically at a location apart vertically. A protrusion 57 protruding inward of the vehicle body is provided on the back surface of the tip of the lower protrusion 38.

  As shown in FIG. 6, the brake pedal 72 is rotatably supported on the protrusion 57 of the step stay 30. A cylinder mounting portion 72a is provided at the rear end of the brake pedal 72, and a brake switch mounting projection 72b and a spring mounting projection 72c are provided side by side in the front-rear direction in the front-rear direction.

  The master cylinder 27 is connected to a cylinder mounting portion 72a of the brake pedal 72 via a mounting piece 27a at the lower end thereof. Support bosses 27b and 27c extending rearward are formed in the upper part of the master cylinder 27 and the central part in the vertical direction. The master cylinder 27 passes bolts (not shown) inserted through the through holes of the support bosses 27b and 27c from the outside of the vehicle body to the fifth and sixth through holes 48 and 50 of the step stay 30 of FIG. The master cylinder 27 is supported on the back surface of the step stay 30 by being inserted into the through holes of the support bosses 27 b and 27 c and tightened with a nut (not shown).

  One end of an oil tube 74 is connected to the master cylinder 27, and the other end of the oil tube 74 is connected to a brake pad 75 of a disc brake of the rear wheel 16 in FIG. Accordingly, when the rider operates the brake pedal 72 of FIG. 6, the brake pedal 72 rotates about the projection 57 and acts on the master cylinder 27, and the pedal force of the brake pedal 72 is converted into hydraulic pressure by the master cylinder 27. Thus, the brake pad 75 (FIG. 1) is operated by the hydraulic pressure.

  A brake switch 77 is connected to a brake switch mounting protrusion 72 b of the brake pedal 72 via a spring 76. The brake switch 77 is connected to the brake pedal 72 by engaging one end of the spring 76 with the attachment piece 77a at the lower end thereof and engaging the other end of the spring 76 with the projection 72b for attaching the brake switch. The brake switch 77 is supported by the step stay 30 by fitting the central portion of the brake switch 77 in the vertical direction inside a C-shaped holding piece 70 a provided in the brake switch support 70.

  A return spring member 78 of the brake pedal 72 is connected to the spring mounting protrusion 72 c of the brake pedal 72. The spring member 78 has a lower end locked to the spring mounting projection 72c and an upper end locked to a locking hole 68a provided in the spring support portion 68 of the step stay 30. 72.

  When the rider operates the brake pedal 72, the brake pedal 72 rotates about the protrusion 57, and a downward depression force on the brake pedal 72 acts on the brake switch 77 and the spring member 78. As a result, the brake switch 77 is actuated and a signal is sent to an engine control unit (not shown) via a cable (not shown).

  Next, the support of the relay bracket 32 to the vehicle body will be described. As shown in FIG. 7, the first and second insertion holes 58 and 62 arranged above and below the relay bracket 32 and the bolts provided on the two bracket support portions 12 a and 12 a spaced apart in the vertical direction in the swing arm bracket 12. By inserting the fastening member 100 such as a bolt that has passed through the first and second through holes 40 and 44 of the step stay 30 into the insertion holes 11 and 11 and tightening them with the nuts 102, the relay bracket 32 is mounted on the vehicle body frame FR. Is detachably supported by a swing arm bracket 12 which is a part of the swing arm bracket 12. In this manner, the relay bracket 32 is rigidly supported by the bracket support portions 12a and 12a that are separated in the vertical direction of the vehicle body.

  Next, the support of the step stay 30 to the relay bracket 32 will be described. As shown in FIG. 7, an elastic support 108 for suppressing vibration transmission is fitted into the second through hole 42 of the step stay 30. The elastic support 108 includes an outer bushing 110, an inner collar 111, and an elastic body 112 such as rubber interposed between the bushing 110 and the collar 111. The collar 111 passes through the second through hole 42, and the inner end portion abuts on the outer surface of the relay bracket 32. The elastic support 108 has a cylindrical shape that is long in the axial direction. Therefore, the elastic support 108 is hard in the axial direction where the rider's weight is applied to the step stay 30, and the position of the rider's foot is stabilized and soft in the radial direction. Therefore, vibration transmitted from the vehicle body to the rider's foot via the step stay 30 is suppressed.

  The step stay 30 is relayed by inserting the fastening member 104 such as a bolt into the collar 111 of the elastic support member 108 fitted in the second through-hole 42 and tightening it to the first screw hole 60 of the relay bracket 32. The bracket 32 is detachably supported. Although the rubber washer 114 is interposed between the fastening member 104 and the elastic support member 108, the rubber washer 114 may be omitted. Thus, the step stay 30 and the relay bracket 32 are floatingly fixed via the elastic support member 108 for vibration absorption. As described above, the step stay 30 is bolted to the relay bracket 32 via the collar 111 in the axial direction of the elastic support member 108 and is supported via the elastic member 112 in the radial direction. That is, the step stay 30 is rigidly supported by the relay bracket 32 in the axial direction, and is elastically supported by the relay bracket 32 so as to be displaceable within a predetermined range in the radial direction.

  The relay bracket 32 is formed in a shape in which an intermediate portion 32a between the first and second insertion holes 58 and 62 through which the fastening member 100 is inserted is recessed inward, and the intermediate portion 32a is a stay support portion. First and second screw holes 60 and 64 are formed. As a result, the elastic support 108 that is long in the axial direction (left-right direction) is prevented from protruding outward, and the aesthetic appearance and the degree of footrest of the step stay 30 are improved. In the present embodiment, the bracket support portions 12a and 12a of the swing arm bracket 12 are formed as two attachment pieces protruding rearward, and the intermediate portion is formed in a space between the two attachment pieces 12a and 12a separated in the vertical direction. Portion 32a is located.

  The step stay 30 is also detachably supported by the relay bracket 32 by the same method in the fourth through hole 46 of the step stay 30 and the second screw hole 64 of the relay bracket 32 shown in FIG. As described above, the base portion 34 of the step stay 30 is supported by the plurality of stay support portions, specifically, the first and second screw holes 60 and 64 that are separated in the front-rear direction in the relay bracket 32.

  A pin 65 of the relay bracket 32 is fitted into a vibration absorbing damper 59 housed in the recess 61 of the lower protrusion 38 of the step stay 30. That is, the step stay 30 is locked to the relay bracket 32 in a state in which the pin 65 with the damper 59 interposed therebetween allows displacement in the left-right direction (vehicle width direction) to the outside and suppresses the displacement inward. . That is, the damper 59 absorbs a large weight applied to the step stay 30 from the step 31 in the standing posture, and further restores and absorbs the vibration when the large weight is not applied. In this embodiment, the pin 65 provided on the relay bracket 32 is fitted to the damper 59, but the step stay 30 and the relay bracket 32 may be locked by the damper 59. Alternatively, a recess may be provided, and the damper 59 may be fitted between the recess and the recess 61 of the step stay 30 so that the damper 59 is interposed between the step stay 30 and the relay bracket 32.

  The damper 59 is formed in a substantially cubic shape, and contacts the concave portion 61 of the step stay 30 on the upper and lower surfaces and the front and rear surfaces thereof. Thereby, it is possible to prevent the vibration in the vertical direction and the front-rear direction from being transmitted from the vehicle body toward the step stay 30. Furthermore, the surface contact between the outer surface of the damper 59 and the recess 61 is ensured by forming the upper and lower surfaces and the front and back surfaces to be inclined so as to approach each other as they go outward.

  As described above, the step stay 30 is supported by the relay bracket 32 by the two fastening members 104 spaced in the front-rear direction via the elastic support 108 at the base portion 34, and the lower projecting portion 38 below the step stay 30 via the damper 59. It is locked by a pin 65. That is, the step stay 30 is supported by the relay bracket 32 with stable support with rubber interposed between three points, two points arranged in the front-rear direction and one point below the step stay 30.

  Thus, since the step stay 30 is supported by the three points (108, 108, 59) that draw a triangle, the step stay 30 can be received by the surface, and the vibration of the step stay 30 is suppressed. Further, the step stay 30 is rigidly supported in the left-right direction (vehicle width direction) at two points by the two fastening members 104 shown in FIG. 5 on the relay bracket 32, and at a position different from the virtual line V connecting these two points. Since the damper 59 is elastically supported in the left-right direction (vehicle width direction), vibration that is angularly displaced around the imaginary line V is suppressed. Furthermore, since the dynamic damper 52 is disposed at a position different from the virtual line V, specifically, above the virtual line V, vibration that is angularly displaced around the virtual line V is further suppressed. Further, by setting the distance from the dynamic damper 52 to the virtual line V and the distance from the damper 59 on the back side of step 31 to the virtual line V, vibrations around the virtual line V can be further suppressed.

  The left step stay 30 is different from the above-described right step stay 30 in the following points. The left step stay 30 does not have the fifth and sixth through holes 48 and 50 in FIG. 2, the spring support portion 68 and the brake switch support portion 70 in FIG. 6. That is, the master cylinder 27, the brake switch 77, and the spring member 78 are not supported by the left step stay 30. In addition, not the brake pedal 72 but a kick pedal (not shown) for starting the engine E is rotatably supported by the protrusion 57 of the left step stay 30. Other configurations and support structures are the same as those of the step stay 30 on the right side.

  In the above configuration, the step stay 30 shown in FIG. 1 is supported by the swing arm bracket 12 which is a part of the vehicle body frame FR via a separate relay bracket 32 (FIG. 4A). Even if the shape of the FR changes, the position of the step 31 can be adjusted by changing the relay bracket 32, so that the shape of the step stay 30 that is complicated or requires finishing is not changed. The position of step 31 can be easily selected. Further, by preparing a plurality of relay brackets 32 with different positions of step 31 even in the same body frame FR, an appropriate relay bracket 32 is selected for each rider, and step 31 is arranged at the most suitable position. can do.

  As shown in FIG. 8, since the vibration transmission suppressing damper 59 and the elastic support 108 are interposed between the step stay 30 and the relay bracket 32, vibrations from the engine and the vehicle body are transmitted to the rider's feet. Can be prevented.

  In addition, since the step stay 30 is connected to the relay bracket 32 by the pin 65 with the damper 59 disposed on the back side of the step 31, the damper on the space on the back side of the step stay 30 has a margin. 59 and pin 65 can be arranged.

  Further, a pin 65 is provided in the relay bracket 32, and a recess 61 for accommodating the damper 59 is formed at a position corresponding to the back side of the step mounting bracket 54 in the step stay 30 to allow the vehicle body to be displaced outward in the left-right direction. Since the inward displacement is suppressed, vibration on the step stay 30 side caused by load fluctuation due to movement of the rider's foot can be absorbed, and transmission of engine vibration mainly from the relay bracket 32 side can be suppressed.

  As shown in FIG. 7, the relay bracket 32 is supported by bracket support portions 12a and 12a spaced apart in the vertical direction in the swing arm bracket 12, and the step stay 30 is separated in the front-rear direction in the relay bracket 32 shown in FIG. Since the stay support portions 60 and 64 support the step stay 30, the step stay 30 is stably supported by the vehicle body frame FR via the relay bracket 32. In addition, since the step stay 30 is supported by the stay support portions 60 and 64 via the elastic support member 108, the step stay 30 can be prevented from vibrating in the vertical direction mainly due to engine vibration from the vehicle body.

  As shown in FIG. 2, a pin 65 with a damper 59 shown in FIG. 8 interposed is provided below the second and fourth through holes 42 and 46 supported by the relay bracket 32 (FIG. 5) in the step stay 30. 5 and the anti-vibration weight 55 shown in FIG. 5 is arranged on the upper side, the vibration around the longitudinal axis passing through the two elastic supports 108 in the step stay 30 is caused by the second and fourth through holes. Since it is suppressed by the damper 59 arranged below 42 and 46 and the anti-vibration weight 55 arranged above, it is possible to suppress the vibration around the longitudinal axis transmitted to the rider's feet.

  As described above, the preferred embodiments have been described with reference to the drawings. However, those skilled in the art will readily understand various changes and modifications within the obvious scope by looking at the present specification. For example, in the above embodiment, two bracket support portions 12a are provided, but may be three or more, or may be one. Similarly, the stay support portions 60 and 64 are not limited to two, and may be three or more, or one. Further, in the above-described embodiment, the step stay 30 is supported by the relay bracket 32 with stable support with rubber interposed by three points, but may be four or more points. Further, the present invention can be applied not only to motorcycles but also to saddle riding type vehicles such as tricycles and small planing boats. Accordingly, such changes and modifications are to be construed as within the scope of the invention as defined by the appended claims.

12 swing arm bracket 12a bracket support portion 30 step stay 31 rider step 32 relay bracket 54 step mounting bracket 55 weight 59 damper (elastic member)
60, 64 screw holes (stay support part)
61 recess 65 pin 108 elastic support FR body frame

Claims (5)

A step stay that supports the step for the passenger is detachably supported by a separate relay bracket, and the relay bracket is detachably supported by the vehicle body frame,
A step stay structure for a straddle-type vehicle in which the step stay is locked to the relay bracket by an elastic member disposed on the back side of the step.   The step stay structure of the saddle riding type vehicle according to claim 1, wherein the step stay is supported by the relay bracket via an elastic support for suppressing vibration transmission. 3. A step according to claim 1 or 2 , wherein a recess for housing the elastic member is formed at a position corresponding to the back side of the step mounting bracket in the step stay to allow the vehicle to be displaced outward in the left-right direction. A straddle-type vehicle step stay structure that suppresses the displacement of the stay. 4. The relay bracket according to claim 1 , wherein the relay bracket is supported by a bracket support portion that is separated in a vertical direction in the vehicle body frame, and the step stay is a stay support portion that is separated in the front-rear direction in the relay bracket. A step-stay structure for a saddle-ride type vehicle that is supported. A step stay that supports the step for the passenger is detachably supported by a separate relay bracket, and the relay bracket is detachably supported by the vehicle body frame,
The relay bracket is supported by a bracket support portion spaced apart in the vertical direction in the vehicle body frame, and the step stay is supported by a stay support portion spaced apart in the front-rear direction in the relay bracket,
The step stay is locked to the relay bracket in a state in which the elastic member allows the outward displacement in the left-right direction and suppresses the inward displacement,
A step stay structure for a straddle-type vehicle, in which the elastic member is disposed below a stay supported portion supported by the plurality of stay supporting portions of the step stay, and a weight for vibration isolation is disposed above.

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