JP5953100B2 - Step part structure of saddle-ride type vehicle - Google Patents

Description

  The present invention relates to a step portion structure of a saddle-ride type vehicle.

Conventionally, there is a step part structure of a saddle-ride type vehicle in which a holder cover and a pillion step holder are integrated and attached to a pivot bracket of a vehicle body frame (see, for example, Patent Document 1).
The pillion step holder is a light alloy molded product, and its front portion overlaps with the pivot bracket, so that an excess portion is cut out in order to optimize rigidity. The cut-out part (thickening part) is covered with a holder cover to reduce the weight while maintaining the appearance.

JP 2008-201150 A

  By the way, in the above-mentioned conventional technology, the pillion step holder is an integral mold product having a hollow portion, but it is also possible to form a pillion step holder by combining a plurality of types of steel materials. Also in this case, there is a demand for a configuration that can reduce weight and cost with a simple structure.

  Therefore, an object of the present invention is to suppress the weight and cost even when a step portion structure of a saddle-ride type vehicle includes a pillion step holder formed by combining a plurality of types of steel materials.

As a means for solving the above problems, the invention described in claim 1 is a pillion step holder ( 41 ) in which a front end portion is attached to a vehicle body frame (5) and a pillion step (19) for passengers is supported at a rear end portion. in step portion structure of a saddle-ride type vehicle (1) equipped with a vicinity of the pillion step holder (41) is positioned at the front end portion of the pillion step holder (41) main steps for a rider (18) in the plate-like member attached to the body frame (5) (42), the pipe member supporting the pillion step from the outside in the vehicle width direction to the rear end portion extending rearward (19) of the plate-like member (42) and (43, 44), their welded connection and (S3, S4), has, the plate-like member (42) and the welded connection between the pipe member (43, 44) (S , At least a portion of S4), the by pillion step holder (41) to detachably attached resin holder cover (46) is covered from the outside in the vehicle width direction, the holder cover (46), the plate A plate-like portion (47) opposed to the shaped member (42) in the vehicle width direction, and the plate-like portion (47) is located above the holder cover (46) in a side view. ) Along the lower edge (26d), the front edge (47b) extending so as to continue below the front edge (26b) of the vehicle body cover (26), and the vehicle body cover ( 26) a rear edge portion (47c) extending continuously below the rear edge portion (26c), and the outer surface of the plate-like portion (47) is connected to the outer surface of the vehicle body cover (26). Provided to be flush with each other. Inside the Kaba (46), characterized in that the welded connection (S3, S4) are accommodated.
The saddle-ride type vehicle includes all vehicles on which the driver rides across the vehicle body, and includes not only motorcycles (including motorbikes and scooter type vehicles) but also three-wheelers (front one wheel and rear two wheels). In addition, a vehicle having two front wheels and one rear wheel is also included.

The invention as set forth in claim 2, wherein the pipe member (43, 44) includes an upper drawing pipe extending to the top of the rear of the plate-like member (42) (43), the plate-like member lower portion of the (42) A lower extending pipe ( 44 ) extending rearward, and an inclined member ( 43c ) forming a truss structure is bridged between the upper extending pipe ( 43 ) and the lower extending pipe ( 44 ). Features.
The invention described in claim 3 has a portion in which at least a part of the front end (43a, 44a) of the pipe member (43, 44) is crushed in the radial direction, and the pillion step holder (41) It has a welded joint part (S3, S4) between the flat surface of the crushed front end part (43a, 44a) of the pipe member (43 , 44) and the plate-like member (42).
According to a fourth aspect of the present invention, at least a part of the pipe member (43, 44) has a curved portion (43d, 44d) extending outward in the vehicle width direction behind the welded joint portion (S3, S4). The rear master cylinder (53) is arranged on the inner side in the vehicle width direction of the curved portions (43d, 44d).
The invention as set forth in claim 5, wherein the holder cover (46), said plate-like member (42) wherein the welded connection projecting outward in the vehicle width direction than the outer surface of (S3, S4) said I covering Projections ( 48, 49 ) projecting outward in the vehicle width direction from the plate-like part (47) are provided behind the main step (18) for the driver .

According to the first aspect of the present invention, the pillion step holder is formed by combining the plate-like member and the pipe member, so that the manufacturing cost of the pillion step holder can be reduced, and the welded joint between the plate-like member and the pipe member. By appropriately covering with a resin-made holder cover, the rigidity of the welded joint can be optimized, and the appearance can be maintained and the weight can be reduced by the holder cover. Further, the appearance around the holder cover can be improved and the driver's foot can be improved.

According to the second aspect of the present invention, it is possible to efficiently ensure the supporting rigidity against the load applied to the pillion step.
According to the invention described in claim 3, the weld length of the pipe member to the plate-like member can be easily secured.
According to the invention described in claim 4 , disturbance to the rear master cylinder can be suppressed by the pipe member.
According to the fifth aspect of the present invention, the overall appearance of the holder cover can be made thinner than when the entire holder cover extends outward in the vehicle width direction .

1 is a left side view of a motorcycle according to an embodiment of the present invention. It is a top view including a partial cross section around the step of the motorcycle. Fig. 2 is a left side view of the periphery of a step of the motorcycle. Fig. 3 is a right side view of the periphery of a step of the motorcycle. Fig. 3 is a left side view of a left pillion step holder of the motorcycle. It is a perspective view of the front part of the left pillion step holder. Fig. 3 is a right side view of a right pillion step holder of the motorcycle. It is a perspective view of the front part of the right pillion step holder.

  Embodiments of the present invention will be described below with reference to the drawings. Note that the directions such as front, rear, left and right in the following description are the same as those in the vehicle described below unless otherwise specified. Further, in the drawings used for the following explanation, an arrow FR indicating the front of the vehicle, an arrow LH indicating the left side of the vehicle, and an arrow UP indicating the upper side of the vehicle are shown.

  In the motorcycle 1 (saddle-ride type vehicle) shown in FIG. 1, the front wheel 2 is pivotally supported on the lower ends of a pair of left and right front forks 3. The upper portions of the left and right front forks 3 are pivotally supported by the head pipe 6 at the front end portion of the vehicle body frame 5 via the steering stem 4 so as to be steerable. On the steering stem 4, a steering bar handle 4a is attached. A front cowl 4 b is attached in front of the steering stem 4.

  The vehicle body frame 5 is formed by integrally joining a plurality of types of steel materials by welding or the like. The vehicle body frame 5 includes a single main frame 7 that extends obliquely downward and rearward from the upper rear side of the head pipe 6 and then extends downward and extends downward from the lower rear side of the head pipe 6. Down frame 8, hanger bracket 9 connected to the lower end portion of down frame 8, pivot bracket 11 provided at the rear lower end portion of main frame 7, and a pair of left and right seat rails extending rearward from the rear side of the bent portion of main frame 7 12 and a pair of left and right support pipes 13 extending obliquely upward and rearward from the rear side of the pivot bracket 11 toward the lower side of the front and rear intermediate portions of the left and right seat rails 12.

  The rear wheel 14 of the motorcycle 1 is pivotally supported by a rear end portion of a swing arm 15 that extends in the front-rear direction below the rear portion of the vehicle body. The front end portion of the swing arm 15 is pivotally supported by the pivot bracket 11 at the front and rear intermediate portion of the vehicle body frame 5 so as to be vertically swingable. The rear wheel 14 is connected to an engine 21 which is a prime mover of the motorcycle 1 via, for example, a chain type transmission mechanism 14a disposed on the left side of the rear part of the vehicle body.

The engine 21 erects the cylinder 23 above the front part of the crankcase 22 constituting the lower part thereof. In the cylinder 23, a cylinder body 23a, a cylinder head 23b, and a head cover 23c are stacked in order from the crankcase 22 side. Reference numeral C <b> 1 in the drawing indicates a cylinder axis along the rising direction of the cylinder 23.
A fuel tank 16 is disposed above the cylinder 23, and a seat 17 is disposed behind the fuel tank 16. In the figure, reference numeral 18 denotes a driver's main step 18, and reference numeral 19 denotes a rear passenger's pillion step 19.

  Various covers made of synthetic resin are attached around the body of the motorcycle 1. Specifically, the front cowl 4b is attached to the steering stem 4, a front fender 4c is attached between the left and right front forks 3, and left and right shrouds 25 are attached to the left and right sides of the front part of the body frame 5. Left and right side covers 26 are attached to the left and right sides of the front and rear intermediate part of the body frame 5, left and right rear side covers 27 are attached to the left and right sides of the rear part of the body frame 5, and a rear end cover 28 is attached to the rear end part of the body frame 5. A rear fender 29 is attached below the rear end of the body frame 5.

  Referring also to FIG. 2, the pivot bracket 11 includes a plate-like left and right side wall portion 11a that is substantially orthogonal to the vehicle width direction (left and right direction) and a plate-like rear wall that extends between the rear edge portions of the left and right side wall portion 11a. It has the part 11b integrally. The left and right side wall portions 11a are supported by being joined to the left and right side portions of the pivot pipe 11c and the left and right side portions of the lower cross pipe 11d, respectively, penetrating them in the vehicle width direction. The rear lower end portion of the main frame 7 is joined to the upper surface of the left and right intermediate portion of the pivot pipe 11c. The front end portions of the left and right support pipes 13 are joined to the rear surfaces of the left and right side portions of the pivot pipe 11c. A line CL in the figure indicates the left and right center plane of the vehicle body.

  A left and right front end pipe portion 15a that is a front end portion of the swing arm 15 is disposed outside the pivot pipe 11c in the vehicle width direction. The left and right front end pipe portions 15 a are individually fixed to the front end portions of the left and right arm portions 15 b of the swing arm 15. Each of the left and right front end pipe portions 15a has a cylindrical shape along the vehicle width direction, and holds a needle bearing (not shown) on its inner periphery.

  In the figure, reference numeral 15c denotes a cross member that connects the front portions of the left and right arm portions 15b, and reference numeral 15d denotes a rear cushion that extends between the cross member 15c and the vehicle body frame 5. The left and right pillion step holders 31 and 41 have left and right plate-like members 32 and 42 disposed on the outer side in the vehicle width direction of the left and right front end pipe portions 15a. The left and right plate-like members 32 and 42, the left and right front end pipe portions 15a and the pivot pipe 11c Are connected via a pivot shaft 51 along the vehicle width direction.

  The pivot shaft 51 is a stepped bolt having a long shaft portion. By screwing and tightening a nut 51b to the tip screw portion of the pivot shaft 51, the left and right plate-like members 32 and 42, the left and right front end pipe portions The inner collar of the bearing in 15a and the pivot pipe 11c are fastened. Accordingly, the left and right front end pipe portions 15a of the swing arm 15 are supported by the pivot pipe 11c of the vehicle body frame 5 through the pivot shaft 51 and the bearings so as to be swingable.

  As shown in FIGS. 3 and 4, the left and right main steps 18 for the driver are supported on the lower surface of the crankcase 22 via the main step bracket 18 a. The left and right pillion step 19 is supported on the side surface of the pivot bracket 11 via left and right pillion step holders 31 and 41.

  The left and right pillion step holders 31 and 41 are formed by integrally welding a plurality of types of steel materials. Synthetic resin left and right holder covers 36 and 46 are attached to the outer sides in the vehicle width direction of the front ends of the left and right pillion step holders 31 and 41, respectively. Reference numeral 14b in the drawing denotes a chain case that houses the transmission mechanism 14a.

  As shown in FIGS. 2, 3, 5, and 6, the left pillion step holder 31 includes a left plate member 32 that constitutes a front end portion thereof, an upper left pipe member 33 that extends rearward of the left plate member 32, and a lower left member. It has a pipe member 34 and a left step support bracket 35 that joins the rear ends of the upper and lower left pipe members 33, 34.

  The left plate-like member 32 is formed by pressing a steel plate into a desired shape, for example, and forms a flat plate shape substantially orthogonal to the vehicle width direction, and extends in the vehicle width direction from the front and rear edges of the side wall portion 32a. The front and rear rib portions 32b and 32c are bent integrally and rise up.

  The front and rear edge portions of the left plate member 32 extend in a meandering manner so as to avoid and support peripheral parts. The lower end portion of the left plate member 32 is fastened and fixed to the left end portion of the lower cross pipe 11d fixed to the lower portion of the pivot bracket 11 by a bolt B1. In the figure, reference numeral 32d denotes a bolt insertion hole for fastening to the lower cross pipe 11d, reference numeral 32e denotes a pivot hole through which the pivot shaft 51 is inserted, and reference numeral 32f denotes a bracket to which a screw B2 for fixing the left holder cover 36 is screwed. Each is shown.

  The upper and lower left pipe members 33 and 34 are made of, for example, a circular steel pipe. The upper left pipe member 33 extends rearward upward from the upper outer portion of the left plate-like member 32. The lower left pipe member 34 extends rearwardly upward from the lower outer portion of the left plate member 32 with a steeper slope than the upper left pipe member 33. The rear ends of the upper and lower left pipe members 33, 34 reach the inner side in the vehicle width direction of the single left step support bracket 35.

  The front end portion 33a of the upper left pipe member 33 is welded to the upper left gusset member 33b that is welded to the outer side in the vehicle width direction of the upper portion of the left plate member 32. As a result, the front end portion 33a of the upper left pipe member 33 is coupled to the left plate member 32 via the upper left gusset member 33b. A portion including the front end portion 33a of the upper left pipe member 33, the upper portion of the left plate-like member 32, and the upper left gusset member 33b is referred to as an upper left weld joint S1 (see FIGS. 2 and 5).

  The front end 34a of the lower left pipe member 34 is welded to a lower left gusset member 34b welded to the outer side in the vehicle width direction of the lower portion of the left plate member 32. As a result, the front end 34a of the lower left pipe member 34 is coupled to the left plate member 32 via the lower left gusset member 34b. A portion composed of the front end portion 34a of the lower left pipe member 34, the lower portion of the left plate-like member 32, and the lower left gusset member 34b is defined as a lower left weld joint portion S2 (see FIG. 5).

The upper and lower left pipe members 33, 34 are slightly bent outward in the vehicle width direction behind the front end portions 33 a, 34 a, respectively, and are inclined and extend rearward so as to be positioned outward in the vehicle width direction.
A plurality (two in the figure) of the left inclined beam 33c is provided between the upper and lower left pipe members 33 and 34. Behind the left plate member 32, a truss structure is formed by upper and lower left pipe members 33, 34 and a left inclined beam 33c.

  The left step support bracket 35 is formed by pressing a steel plate into a desired shape, for example, and is bent inward in the vehicle width direction from a side wall portion 35a having a flat plate shape substantially orthogonal to the vehicle width direction, and an upper and lower edge portion of the side wall portion 35a. The upper and lower rib portions 35b and 35c are integrally formed. On the inner side in the vehicle width direction of the left step support bracket 35, the rear end portion of the upper left pipe member 33 is welded along the upper rib portion 35b, and the rear end portion of the lower left pipe member 34 is extended along the lower rib portion 35c. Welded together.

A support arm 35d that supports the left pillion step 19 in a tiltable manner is fixed to the left side of the left step support bracket 35 in the vehicle width direction.
A cylindrical guard support portion 35e that supports the front lower end portion of the passenger dress guard 19a is fixed to the rear end portion of the left step support bracket 35.

  As shown in FIGS. 2, 4, 7, and 8, the right pillion step holder 41 includes a right plate member 42 that constitutes a front end portion thereof, an upper right pipe member 43 that extends rearward of the right plate member 42, and a lower right member. It has a pipe member 44 and a right step support bracket 45 that joins the rear ends of the upper and lower right pipe members 43, 44.

  Like the left plate member 32, the right plate member 42 is formed by, for example, pressing a steel plate into a desired shape, and integrally includes a side wall portion 42a and front and rear rib portions 42b and 42c. The lower end portion of the left plate member 32 is fastened and fixed to the right end portion of the lower cross pipe 11d by a bolt B1. The left and right plate members 32 and 42 and the lower cross pipe 11 d function as a lower bracket that supports the left and right ends of the pivot shaft 51 on the pivot bracket 11.

  In the figure, reference numeral 42d denotes a bolt insertion hole for fastening with the lower cross pipe 11d, reference numeral 42e denotes a pivot hole through which the pivot shaft 51 is inserted, and reference numeral 42f denotes a non-protruding projection projecting inward in the vehicle width direction of the right holder cover 46. A bracket for inserting the illustrated clip pin and a pedal support portion 42g for supporting the spindle 52a of the brake pedal 52 are shown.

  The upper and lower right pipe members 43 and 44 are made of, for example, a circular steel pipe, like the upper and lower left pipe members 33 and 34. The upper right pipe member 43 extends rearwardly upward from the upper outer portion of the right plate member 42. The lower right pipe member 44 extends rearwardly upward from the lower outer portion of the right plate member 42 with a steeper slope than the upper right pipe member 43. The rear ends of the upper and lower right pipe members 43, 44 reach the inner side in the vehicle width direction of the single right step support bracket 45.

  The front end portion 43a of the upper right pipe member 43 is crushed so as to change the center portion on the outer side in the vehicle width direction to the inner side in the radial direction and form a flat surface 43b on the inner side in the vehicle width direction. Accordingly, the front end portion 43a of the upper right pipe member 43 forms a rectangular flat surface 43b having a predetermined length with its diameter width on the inner side in the vehicle width direction. The front end 43a of the upper right pipe member 43 is welded to the right plate member 42 over the entire circumference of the flat surface 43b with the flat surface 43b in contact with the upper outer surface of the right plate member 42. Is done. A portion composed of the front end portion 43a of the upper right pipe member 43 and the upper portion of the right plate member 42 is defined as an upper right weld joint S3 (see FIGS. 2 and 7).

  The front end portion 44a of the lower right pipe member 44 is also crushed similarly to the front end portion 43a of the upper right pipe member 43, and forms a rectangular flat surface 44b having a predetermined length with its own diameter width on the inner side in the vehicle width direction. The front end portion 44a of the lower right pipe member 44 is welded to the right plate member 42 over the entire circumference of the flat surface 44b in a state where the flat surface 44b is in contact with the lower outer surface of the right plate member 42. Is done. A portion composed of the front end portion 44a of the lower right pipe member 44 and the lower portion of the right plate member 42 is defined as a lower right weld joint S4 (see FIG. 7).

The upper and lower right pipe members 43 and 44 are formed on the right and left sides of the front end portions 43a and 44a, respectively. The upper and lower right pipe members 43 and 44 are formed on the upper and lower right curved portions 43d and 44d. It is slightly inclined so as to be located on the outer side in the width direction and extends backward. A rear master cylinder 53 having a brake pedal 52 in the brake device of the motorcycle 1 as an operating element is arranged on the inner side in the vehicle width direction of the upper and lower right curved portions 43d and 44d of the upper and lower right pipe members 43 and 44.
A plurality of (two in the figure) right inclined beams 43 c are provided between the upper and lower right pipe members 43, 44, and a truss structure is formed behind the right plate member 42.

  As with the left step support bracket 35, the right step support bracket 45 is formed by, for example, pressing a steel plate into a desired shape, and integrally includes a side wall portion 45a and upper and lower rib portions 45b and 45c. On the inner side in the vehicle width direction of the right step support bracket 45, the rear end portion of the upper right pipe member 43 is welded along the upper rib portion 45b, and the rear end portion of the lower right pipe member 44 is extended along the lower rib portion 45c. Welded together. The rear end portion of the lower right pipe member 44 is crushed similarly to the front end portion 44a, and forms a rectangular flat surface (not shown) on the outer side in the vehicle width direction.

A support arm 45d that supports the right pillion step 19 so as to be tiltable is fixed to the outside of the right step support bracket 45 in the vehicle width direction.
A cylindrical muffler that supports the upper stay 24c of the muffler 24b that is disposed on the right side of the rear portion of the vehicle body and that connects the rear end of the exhaust pipe 24a extending from the cylinder head 23b of the engine 21 is disposed at the rear end of the right step support bracket 45. The support part 45e is fixed.

  As shown in FIG. 3, the left holder cover 36 has a left plate-like portion 37 facing the left plate-like member 32 in the vehicle width direction and an outer side in the vehicle width direction corresponding to the front end portion 33 a of the upper left pipe member 33. A protruding upper left protrusion 38 is integrally formed.

  The left holder cover 36 is provided so as to be continuously connected to a lower portion 26a below the front and rear intermediate portion of the left side cover 26. The downward extending portion 26a of the left side cover 26 extends downward so as to narrow the front-rear width as viewed from the side. The front edge portion 26b of the downward extending portion 26a is inclined so as to be located rearward as it is lower, and the rear edge portion 26c of the downward extending portion 26a is inclined so as to be located forward as it is lower. The lower edge portion 26d of the protruding portion 26a is inclined rearwardly upward.

The left plate-like portion 37 of the left holder cover 36 has, in a side view, an upper edge portion 37a along the lower edge portion 26d of the lower extension portion 26a of the left side cover 26 and a front edge portion 26b of the lower extension portion 26a. A front edge portion 37b that extends so as to be continuous with the lower edge of the lower extension gusset member 34 , a rear edge portion 37c that extends so as to be continuous with the lower edge of the rear edge portion 26c of the downward extension portion 26a, and an upper edge portion of the lower left gusset member 34b. A lower edge portion 37d is formed. The outer surface of the left plate portion 37 is provided so as to be substantially flush with the outer surface of the downwardly extending portion 26 a of the left side cover 26. A rear portion of the seesaw type change pedal 54 is disposed outside the lower edge portion 37d of the left holder cover 36 in the vehicle width direction.

The upper left protruding portion 38 partially protrudes outward from the outer surface of the left plate-like portion 37 in the vehicle width direction. The upper left protrusion 38 has a semicircular cross section along the upper left pipe member 33 and extends in a hollow shape. Inside the upper left protrusion 38, the front end 33a of the upper left pipe member 33 that protrudes outward in the vehicle width direction from the outer surface of the left plate-like member 32 of the left pillion step holder 31 (and thus the upper left weld joint S1). Is housed.

As shown in FIG. 4, the right holder cover 46 corresponds to the right plate-like portion 47 facing the right plate-like member 42 in the vehicle width direction and the front end portions 43a, 44a of the upper and lower right pipe members 43, 44. The upper and lower right protrusions 48 and 49 that protrude outward in the width direction are integrally provided.
The right side cover 26 has a downward extending portion 26 a similar to the left side cover 26. The right holder cover 46 is provided so as to be continuously connected to the lower portion 26 a of the right side cover 26.

  The right plate-like portion 47 of the right holder cover 46 includes an upper edge portion 47a along the lower edge portion 26d of the lower extension portion 26a of the right side cover 26 and a front edge portion 26b of the lower extension portion 26a in a side view. A front edge 47b extending so as to continue to the lower side, a rear edge 47c extending so as to continue below the rear edge 26c of the downward extending part 26a, and a rear part notched so as to avoid the spindle 52a of the brake pedal 52. The lower edge portion 47d reaching the vicinity of the lower edge portion of the right plate portion 47 is formed. The outer surface of the right plate portion 47 is provided so as to be substantially flush with the outer surface of the downwardly extending portion 26 a of the right side cover 26.

As described above, the step part structure of the saddle-ride type vehicle in the above embodiment has the left and right pillion step holders that are attached to the body frame 5 at the front end and support the left and right pillion steps 19 for passengers at the rear end. The present invention is applied to a motorcycle 1 having 31 and 41.
The left pillion step holder 31 is located at the front end of the left pillion step holder 31 and is attached to the vehicle body frame 5 in the vicinity of the left main step 18 for the driver, and the left plate member 32. The upper and lower left pipe members 33 and 34 that extend rearward from the upper and lower portions of the upper portion and support the left pillion step 19 at the rear end are welded to each other.
A part of the weld joints S1 and S2 (the weld joint part S1) between the left plate member 32 and the upper and lower left pipe members 33 and 34 is a resin left holder cover that is detachably attached to the left pillion step holder 31. 36.
The right pillion step holder 41 is positioned at the front end of the right pillion step holder 41 and is attached to the vehicle body frame 5 in the vicinity of the right main step 18 for the driver. The upper and lower right pipe members 43 and 44 that extend rearward from the upper and lower portions of the member 42 and support the right pillion step 19 at the rear end thereof are welded together.
The weld joints S3 and S4 of the right plate member 42 and the upper and lower right pipe members 43 and 44 are all covered with a resin-made right holder cover 46 that is detachably attached to the right pillion step holder 41.

  According to this configuration, the pillion step holder is formed by combining the plate-like member and the pipe member, so that the manufacturing cost of the pillion step holder is suppressed, and the welded joint portion of the plate-like member and the pipe member is made of the resin holder cover. By appropriately covering with (3), it is possible to optimize the rigidity of the welded joint portion, maintain the appearance by the holder cover, and reduce the weight.

  In the step structure of the saddle-ride type vehicle, a left inclined beam 33c forming a truss structure is bridged between the upper and lower left pipe members 33 and 34, and between the upper and lower right pipe members 43 and 44, By suspending the right inclined beam 43c forming the truss structure, it is possible to efficiently secure the supporting rigidity against the load applied to the left and right pillion steps 19.

  In the step portion structure of the saddle riding type vehicle, the front end portions 43a and 44a of the upper and lower right pipe members 43 and 44 are crushed in the radial direction, and the flat surfaces 43b and 44b of the front end portions 43a and 44a are formed on the right plate member 42. By welding, it is possible to easily secure the welding length of the upper and lower right pipe members 43, 44 to the right plate member 42.

  The stepped portion structure of the saddle-ride type vehicle is such that the front end portions 33a, 34a of the upper and lower left pipe members 33, 34 are welded to the left plate member 32 via separate gusset members 33b, 34b. The welding length between the upper and lower left pipe members 33, 34 and the left plate member 32 can be easily secured by the gusset members 33b, 34b.

  In the stepped portion structure of the saddle-ride type vehicle, the upper and lower right pipe members 43 and 44 have upper and lower right curved portions 43d and 44d extending outward in the vehicle width direction behind the welded joint portions S3 and S4. By disposing the rear master cylinder 53 on the inner side in the vehicle width direction of 43d and 44d, disturbance to the rear master cylinder 53 can be suppressed by the pipe member.

  In the step portion structure of the saddle-ride type vehicle, the left holder cover 36 has an upper left protrusion 38 that covers an upper left weld joint S1 that protrudes outward in the vehicle width direction from the outer surface of the left plate member 32. The right holder cover 46 has upper and lower right protrusions 48 and 49 that cover the upper and lower right welded joints S3 and S4 that project outward from the outer surface of the right plate member 42 in the vehicle width direction. Compared to the case where it spreads outward in the vehicle width direction, it can have a slim appearance.

  In the stepped structure of the saddle-ride type vehicle, the upper portions of the left and right holder covers 36 and 46 are provided so as to be smoothly continuous with the lower portions of the left and right side covers 26 positioned above the left and right holder covers 36 and 46. In addition, the appearance around the holder cover can be improved and the driver's foot can be improved.

The present invention is not limited to the above-described embodiment. For example, the left holder cover 36 may cover all of the upper and lower welded joints S1 and S2 similarly to the right holder cover 46. The front end portions 43a, 44a of the upper and lower right pipe members 43, 44 of the right pillion step holder 41 are welded to the right plate member 42 via gusset members, or the upper and lower left pipe members 33, 34 of the left pillion step holder 31 The front end portions 33 a and 34 a may be crushed in the radial direction and welded to the left plate member 32.
The saddle riding type vehicle includes all vehicles on which the driver rides across the vehicle body, and includes not only motorcycles (including motorbikes and scooter type vehicles), but also three-wheelers (in addition to front and rear two wheels). , Including two front wheels and one rear wheel vehicle) or four wheel vehicles.
And the structure in the said embodiment is an example of this invention, A various change is possible in the range which does not deviate from the summary of the said invention.

1 Motorcycle (saddle-ride type vehicle)
5 Body frame 18 Left and right main steps (main steps)
19 Left and right pillion step (pillion step)
31 Left pillion step holder (Pillion step holder)
32 Left plate member (plate member)
33 Upper left pipe member (upper extension pipe)
33a Front end 33b Upper left gusset member (gusset member)
33c Left inclined beam (inclined member)
S1 Upper left weld joint (weld joint)
34 Lower left pipe member (lower extension pipe)
34a front end 34b lower left gusset member (gusset member)
S2 Lower left weld joint (weld joint)
38 Upper left protrusion (protrusion)
41 Right pillion step holder (Pillion step holder)
42 Right plate member (plate member)
43 Upper right pipe member (upper extension pipe)
43a front end 43c right tilt beam (tilt member)
43d Upper right curved part (curved part)
S3 Upper right weld joint (weld joint)
44 Lower right pipe member (lower extended pipe)
44a front end portion 44d lower right curved portion (curved portion)
S4 Lower right weld joint (weld joint)
48 Upper right protrusion (protrusion)
49 Lower right protrusion (protrusion)
53 Rear master cylinder

Claims (5)

In the step part structure of the saddle-ride type vehicle (1) having a front end attached to the vehicle body frame (5) and a pillion step holder ( 41 ) supporting a passenger pillion step (19) at the rear end,
The pillion step holder (41), said pillion said body frame (5) is attached to the plate-like member in the vicinity of the main steps for a rider located at the front end portion (18) of the step holder (41) (42) A pipe member ( 43, 44 ) that extends rearward from the vehicle width direction outside of the plate- like member ( 42 ) and supports the pillion step (19) at the rear end portion, and a welded joint portion (S 3, S 4). ) And
At least a part of the welded joint ( S3, S4 ) between the plate member ( 42 ) and the pipe member ( 43, 44 ) is a resin holder removably attached to the pillion step holder ( 41 ). Covered from the outside in the vehicle width direction by the cover ( 46 ) ,
The holder cover (46) has a plate-like portion (47) facing the plate-like member (42) in the vehicle width direction,
The plate-like portion (47) includes an upper edge portion (47a) along a lower edge portion (26d) of the vehicle body cover (26) positioned above the holder cover (46) in a side view, and the vehicle body cover ( 26) a front edge portion (47b) extending so as to continue below the front edge portion (26b), and a rear edge portion (47c) extending so as to continue below the rear edge portion (26c) of the vehicle body cover (26). And form,
The outer surface of the plate-like portion (47) is provided so as to be flush with the outer surface of the vehicle body cover (26),
The step structure of a saddle-ride type vehicle characterized in that the weld joint (S3, S4) is accommodated inside the holder cover (46) . Said pipe member (43, 44), the lower portion of the lower stretched pipe extending rearwardly between the upper stretch pipe extending to the top of the rear of the plate-like member (42) (43), the plate-like member (42) (44 ) And
The straddle-type vehicle according to claim 1, wherein an inclined member ( 43c ) forming a truss structure is bridged between the upper extending pipe ( 43 ) and the lower extending pipe ( 44 ). Step part structure. The pipe member (43, 44) has a portion in which at least a part of the front end (43a, 44a) is crushed in the radial direction ;
The pillion step holder (41) has a welded joint (S3, S4) between the flat surface of the crushed front end (43a, 44a) of the pipe member (43 , 44) and the plate-like member (42). step portion structure of a saddle-ride type vehicle according to claim 1 or 2, characterized in that it has. At least a part of the pipe member (43, 44) has a curved portion (43d, 44d) extending outward in the vehicle width direction behind the welded joint portion (S3, S4),
The step part structure of a saddle-ride type vehicle according to any one of claims 1 to 3 , wherein a rear master cylinder (53) is disposed inside the curved portion (43d, 44d) in the vehicle width direction. . Said holder cover (46), the welded connection (S3, S4) car than the plate-like portion I a covering (47) than the outer surface protruding outward in the vehicle width direction of the plate-like member (42) The saddle riding according to any one of claims 1 to 4, further comprising a protrusion ( 48, 49 ) projecting outward in the width direction behind the main step (18) for the driver. Step structure of type vehicle.

Images