MX2013004706A - Rear structure for saddle-type vehicles. - Google Patents

Abstract

Problem to solve; provide a rear structure for saddle type vehicles which is has a low weight and cost, even if the rear structure includes a rear seat support structure formed with a combination of several types of steel. Solution: a rear seat support structure 31 formed by a plate element 32 and left and right tube elements 33 and 34 welded therebetween. The plate element 32 is installed in the frame close the main left rear structure 18. The upper and lower left tube elements 33 and 34 are extended rearwards from the upper and lower portions, in a respective manner, of the left plate element 32 for supporting the left rear structure of the rear seat 19 in the rear portions thereof. At least one of the welded joints between the left plate element 32 and the upper and lower left tube elements 33 and 34 is covered with a left fastening coating 36 made of resin, which has been installed in a removable manner in the left rear support of the rear seat 31. Drawing Fig 3..

Description

STRETCH STRUCTURE FOR VEHICLE OF TYPE MONTURA Technical Field The present invention deals with a stirrup structure for a saddle type vehicle.

Background In the related art, for a saddle structure for a saddle-type vehicle, there is a structure in which an integral combination of a saddle cover and a stirrup support of the rear seat is installed to a pivot bracket of a frame of the frame. frame (see, for example, Patent Literature 1).

The stirrup support of the rear seat is a molded product of light alloy, and as a front portion thereof is superimposed on the pivot bracket, the redundant portion is cut to achieve a rigidity optimization. The cut portion (lightening portion) is covered with the clamping cover, which achieves a light weight while maintaining quality in appearance.

List of Appointments Patent Literatures Patent Literature 1 JP-A No. 2008-201150 I Summary of the Invention Problem of the Technique Meanwhile, in the related art described above, the stirrup support of the rear seat is an integrally molded product having the lightening portion. However, the stirrup support of the rear seat can be formed with a combination of several types of steel. Also in this case, a construction that allows a reduction in weight and cost with a simple structure is desired. ' Accordingly, it is an object of the present invention to provide a running board structure for a saddle-type vehicle that is lightweight and inexpensive even if the running board structure includes a running board support of the rear seat which is formed with a combination of various types of steel.

Problem solution As a solution to the problem described above, the following is a feature of the invention described in Claim 1. A stirrup structure for a; The saddle-type vehicle (1) includes a back seat bracket (31, 41) having a front end fitted to a frame frame (5) and a rear end supporting a rear seat post (19) for a passenger in the back seat. The stirrup support of the rear seat (31, 41) was formed with a plate-shaped element (32, 42) and a tube element (33, 34, 43, 44) welded together. The plate-shaped element (32, 42) is located at a front end of the stirrup support of the rear seat (31, 41) and was installed on the frame frame (5) in the vicinity of a main stirrup (18) for a driver. The tube element (33, 34, 43, 44) extends rearwardly of the plate-shaped element (32, 42) to support the back seat bracket (19) at a rear end thereof. At least a portion of a welded joint (SI, S2, S3, S4) between the plate-shaped element (32, 42) and the tube element (33, 34, 43, 44) were covered with a clamping cover (36, 46) made of; resin that was removably installed to the back seat bracket (31, 41).

It should be noted that examples of a saddle-type vehicle usually include vehicles where a: driver sits with one leg on each side of the frame; of vehicles, and includes not only motorcycles (including motor-assisted bicycles and scooter-type vehicles), but also three-wheelers (including vehicles that have a front wheel and two rear wheels), as well as vehicles that have two wheels in front and one behind) or four-wheel vehicles.

A feature of an invention described in Claim 2 is that the tube member (33, 34, 43, 44) includes an upwardly extending tube (33, 43) that extends rearwardly from an upper portion of the element. in the form of a plate (32, 42), and a downwardly extending tube (34, 44) extending rearwardly of a., lower portion of the plate-shaped element (32, 42), and An inclined element (33c, 43c) forming an articulated structure is between the upwardly extending tube (33, 43) and the downwardly extending tube (34, 44).

A feature of the invention described in Claim 3 is that a front end (43a, 44a) of the at least one portion of the tube element (43, 44) is radially collapsed, and a flat surface of the front end (43a) , 44a) is welded to the plate-shaped element (42).

A feature of the invention described in Claim 4 is that a front end (33a, 34a) of at least a portion of the tube element (33, 34) was welded to the I plate-shaped element (32) through a reinforcing element (33b, 34b) separated from the plate-shaped element (32).

A feature of the invention described in Claim 5 is that at least a portion of the tube element (43, 44) has a curved portion (43d, 44d) that extends outward in a direction of the width of the vehicle in a part. of the welded joint (S3, S4), and a rear main cylinder (53) is inwardly in the vehicle width direction of the curved portion (43d, 44d).

A feature of the invention described in Claim 6 is that the fastening cover (36, 46) has a protruding portion (38, 48, 49) protruding outwardly in the width direction of the vehicle relative to an exterior surface of the vehicle. plate-shaped element (32, 42) to cover the welded joint (SI, S3, S4).

A feature of the invention described in Claim 7 is that the fastening cover (36, 46) has an upper portion that is continuously displaced to a lower portion of a frame cover (26) that is on the cover of the invention. hold (36, 46).

Advantageous Effects of the Invention According to the invention described in Claim 1, the stirrup support of the rear seat was formed with a combination of a plate-shaped element and a tube element, which allowed the reduction of production costs of the stirrup support. rear seat. Also, the joint welded between the plate-shaped element and the tube element was covered with the cover of the bra made of resin as deemed appropriate, which allowed maintaining the appearance quality with the bra cover and a reduction in the weight while optimizing the rigidity of the welded joint was achieved.

According to the invention described in Claim 2, the support stiffness against the loads on the stirrup link can be secured efficiently.

According to the invention described in Claim 3, the welding length of the tube element to the plate-shaped element can be easily secured.

According to the invention described in Claim 4, the welding length between the tube element and the plate-shaped element can be easily secured by the reinforcing element.

According to the invention described in Claim 5, disturbances to the rear master cylinder can be prevented by the tube element.

According to the invention described in Claim 6, a lighter appearance can be given, as compared to a case where the fastener cover extends outwards in the full width direction of the vehicle.

According to the invention described in Claim 7, it is possible to provide good safety at the feet of a driver while improving the quality of appearance at the periphery of the fastening cover. Brief description of the Drawings FIG. 1 is a left side view of a motorcycle according to an embodiment * of the present invention.

FIG. 2 is a view of the upper plane sectioned partially from the periphery of a motorcycle stirrup.

FIG. 3 is a left side view of the periphery of the motorcycle stirrup.

FIG. 4 is a right side view of the periphery of the stirrup of the motorcycle.

FIG. 5 is a left side view of a left abutment support of the rear seat of the motorcycle.

FIG. 6 is a perspective view of a front portion of the left abutment support of the rear seat.

FIG. 7 is a right side view of a right footboard bracket of the rear seat of the motorcycle.

FIG. 8 is a perspective view of a front portion of the right footboard holder of the rear seat of the motorcycle.

Description of the Form of Realization Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. It should also be noted that the address references such as, front, rear, left and right, in the following description are made with reference to a vehicle described below, unless otherwise indicated. It should also be noted that, in the drawings used in the following description, there is an arrow FR that 1 is shown appropriately indicating the front of the vehicle, the arrow LH indicates the left side of the vehicle, and the arrow UP indicates the top vehicle.

In a motorcycle (saddle-type vehicle) 1 shown in FIG. 1, a front wheel 2 thereof is inserted at the lower ends of a pair of left and right front forks i 3. The upper portions of the left and right front forks 3 are supported in a pivoting manner and directed through of a steering rod 4 by a main tube 6 located at a front end of a frame frame 5. A steering handle 4a was installed in the steering rod 4. A front engine cover 4b was installed in front of the bar of address 4.

The frame frame 5 was formed by intlly joining various types of steel, for example by welding. The frame frame 5 has: a single main frame 7 that extends obliquely downward and rearwardly from the rear of an upper portion of the main tube 6 and then bends down; a single bottom frame 8 extending obliquely downward and rearwardly from the rear of a lower portion of the main tube 6; a suspension bracket 9 which is continuous with the lower end of the lower frame 8; a pivot bracket 11 which was provided at a rear lower end of the main frame 7; a pair of left and right seat rails 12 extending rearward from the rear of the bent portion of the main frame 7; and a pair of left and right support tubes 13 extending obliquely up and back from the rear of the pivot bracket 11 to the lower face of the longitudinal intermediate portions of the left and right seat rails 12. .

A rear wheel 14 of the motorcycle 1 is articulated to a rear end of an oscillating arm 15 which extends in a longitudinal direction in the lower part of a rear portion of a vehicle frame. A front end of the oscillatory arm 15 is pivotally supported in a vertical rotating manner in the pivot bracket 11 located in a longitudinal intermediate portion of the main frame 5. The rear wheel 14 was connected to a motor 21, which serves as the motor of the motorcycle 1, through, for example, a chain type transmission mechanism 14a which is located on the left side of the rear portion of the vehicle frame.

The motor 21 was provided with a cylinder 23 positioned on a front portion of a crankshaft 22 constituting a lower portion of the engine 21. The cylinder 23 was provided with a cylinder body 23a, a cylinder head 23b, and a head cover 23c superimposed in this order from where the side where the crankshaft is located 22. In the figure, the reference sign Cl shows a cylinder axis parallel to the direction of the height of the cylinder 23.

A fuel tank 16 is located on the cylinder 23, and a seat 17 is located at the rear of the fuel tank 16. In the figure, the reference signs 18 and 19 show a main stirrup. for a driver and a rear seat post for a passenger of the rear seat, respectively. 1 Several covers made of synthetic resin are installed around the vehicle frame of the motorcycle 1. More specifically, the front engine cover 4b was installed to the steering rod 4; a front fender 4c was installed between the front left and right 3 forks; left and right covers 25 were installed on the left and right of a front portion of the frame frame 5; side covers 26 left and right were installed on the left and right of a longitudinal intermediate portion of a frame frame 5; left and right rear side covers 27 were installed on the left and right of a rear portion of the frame frame 5; a rear end cover 28 was installed at a rear end of the frame frame 5; and a rear fender 29 was installed under a rear end of the chassis frame 5.

With reference also in FIG. 2, the pivot bracket 11 has integrally left and right side wall portions in the form of plates substantially perpendicular to a vehicle width direction (left to right direction) and a back wall portion 11b in the form of plate extending between the rear edge portions of the left and right side wall portions lia. The left and right portions of a pivot tube 11c and the left and right portions of a lower side tube lid that pass through the left and right side wall portions lia in the vehicle width direction meet j and support the left and right side wall portions lia. A lower rear end of the frame! main 7 was joined to a top surface of a horizontal intermediate portion of the pivot tube 11c. The front ends 1 of the left and right support tubes 13 were joined to the rear surfaces of left and right portions of the pivot tube 11c. In the figure, the CL line shows a central plane from left to right of a vehicle frame.

The left and right front tube portions 15a serving as front ends of the oscillating arm 15 are facing outwardly in the vehicle width direction of the pivot tube lie. The left and right front end tube portions 15a were fixedly provided at front ends, respectively, of! the left and right arm portions 15b of the oscillatory arm 15. Each of the left and right front end tube portions 15a is a cylindrical shape along the width direction of the vehicle and maintains a needle bearing (which does not shown) on the inner periphery of the same.

In the figure, the reference sign 15c shows a transverse element that is connected between the front portions of the left and right arm portions 15b, and the reference sign 15d shows a rear bearing extending between the transverse member 15c and the frame frame 5. The left and right plate shape elements 32 and 42 of the left and right rear seat 31 and 41 seat braces are facing outwards in the vehicle width direction of the front end tube portions left and right 15a. The left and right plate shaped elements 32 and 42, the left and right front end tube portions 15a, and the pivot tube 11c were connected to each other via a pivot shaft 51 extending along the direction of the width of the vehicle.

The pivot shaft 51 is a projecting bolt i having a long shaft portion. A nut 51b is threaded as a screw into a threaded portion of the guide end of the pivot shaft 51, which fastens the left and right plate shaped elements 32 and 42, a bearing clamp in the front end tube portions. left and right 15a, and the pivot tube 11c. Therefore, the left and right front end tube portions 15a of the oscillating arm 15 are rotatably supported on the pivot tube 11c of the frame frame 5 via the pivot shaft 51 and the bearing.

As shown in FIGS. 3 and 4, the main left and right stirrups 18 for a conductor are supported on the lower surfaces of the crankshaft 22 by means of brackets of main stirrups 18a. The left and right rear seat stirrups 19 were supported on the lateral surfaces of the pivot bracket 11 through the back seat braces 31 and 41 of the rear seat.

The left and right abutment bras of the rear seat 31 and 41 were formed by several types of steel welded integrally. The left and right fastener covers 36 and 46 made of synthetic resin were installed outwardly in the width direction of the front end vehicle of the left and right abutment bras of the rear seat 31 and 41. In the figure, the reference 14b shows a chain box storing the transmission mechanism 14a.

As shown in FIGS. 2, 3, 5 and 6, the stirrup support of the rear seat 31 has: the left plate-like element 32 constituting a front end thereof; an upper left tube element 33 and a lower left tube element 34 where each one extends rearwardly of the left plate-like element 32; and a left abutment support bracket 35 which was joined to the rear ends of the upper and lower left tube elements 33 and 34.

The left plate-shaped element 32 was formed by pressing, for example, a steel plate in a desired shape, and has an integral shape: a side wall portion 32a having a flat plate shape substantially perpendicular to the direction of the width of the vehicle and extends vertically; and front and rear rib portions 32b and 32c that are bent to lift inwardly in the vehicle width direction from the front and rear flange portions of the sidewall portion 32a.

The front and rear flange portions of the left plate-like element 32 extend each while. snake as deemed appropriate to avoid or support its peripheral components. A lower end of the left plate-like element 32 is fitted by a bolt Bl to a left end of the lower transverse tube lid provided in a fixed manner in a lower portion of the pivot bracket 11. In the figure, the reference sign 32d shows a hole for inserting a bolt to fit the left plate-like element 32 to the lower transverse tube lid; the reference sign 32e shows a pivot hole allowing the insertion of the pivot shaft 51; and the reference sign 32f shows a square in which a screw B2 is screwed to fix the cover of the left fastener 36.

The upper and lower left tube elements 33 and 34 were formed of, for example, a circular steel tube. The upper left tube element 33 extends rearwardly from an upper outer portion of the left plate-shaped element 32 in such a way that it tilts upwards and backwards. The lower left tube member 34 extends rearwardly from a lower outer portion of the left plate-shaped element 32 so that it tilts upward and towards the rear while forming a deeper tilt than the upper left tube element 33. The rear ends of the upper and lower left tube elements 33 and 34 extend to the inner side in the width direction of the vehicle of the single j-bracket of left abutment 35.

A front end 33a of the upper left pipe element 33 was welded to an upper left reinforcing element 33b which was welded to an exterior side in the vehicle width direction of an upper portion of the left-sided plate element 32. both, the front end 33a of the upper left tube element 33 was coupled to the left plate-like element 32 a, through the upper left reinforcement element 33 b. The composite portion of the front end 33a of the element of! upper left tube 33, an upper portion of the left plate-like element 32, and the upper left reinforcement element 33b serves as an upper left welded connection SI (see FIGS 2 and 5).

A front end 34a of the lower left tube member 34 was welded to the outside side in the vehicle width direction of a lower portion of the left plate-like member 32. Thus, the front end 34a of the lower left tube member 34 is coupled to the left plate-like element 32 through the lower left reinforcement element 34b. The composite portion of the front end 34a of the lower left pipe element 34, a lower portion of the left plate-shaped element 32, and the lower left reinforcing element 34b serves as a lower left welded connection S2 (see FIG. .

The upper and lower tube elements 33 and 34 were bent slightly outwards in the widthwise direction of the vehicle at the rear of the front ends 33a and 34a, respectively, to extend outward so that they are inclined so that the lower and upper left tube elements 33 and 34 are located outward in the vehicle width direction with a rearward direction.

Several left inclination beams (two in the figure) 33c are between the upper and lower left-hand tube elements 33 and 34. An articulated structure with the upper and lower left tube elements 33 and 34 and the left inclination beams 33c formed on the back of the element with left plate form 32.

The support bracket of the left abutment 35 was formed by pressing, for example, a steel plate in a desired shape, and has in an integral manner: a side wall portion 35a having a flat plate shape substantially perpendicular to the direction of the width of the vehicle; and front and rear rib portions 35b and 35c that are bent to rise inwardly in the vehicle width direction from the front and rear flange portions of the sidewall portion 35a. On the inner side in the vehicle width direction of the left abutment support bracket 35, a rear end of the upper left tube element 33 was welded along the upper rib portion 35b, and a rear end of the element lower left tube 34 was welded along the lower rib portion 35c.

A support arm 35d supporting the left rear seat bracket 19 in an inclined shape was provided in a fixed manner on the outside in the width direction of the vehicle of the support bracket of the left footboard 35.

A cylindrical guard supporting portion 35e supporting a front lower end of a liner guard 19a for a passenger of the rear seat was provided fixedly at a rear end of the left footboard support bracket 35.

As shown in FIGS. 2, 4, 7 and 8, the stirrup support of the right rear seat 41 has: the right plate-like element 42 constituting a front end thereof; an upper right pipe element 43 and a lower right pipe element 44 each extending rearwardly of the right plate member 42; and a right abutment support bracket 45 which is attached to the rear ends of the upper and lower right pipe elements 43 and 44.

Similarly to the left plate-shaped element 32, the right-plate-shaped element 42 was formed, by pressing, for example, a steel plate in a desired shape and integrally has a side wall portion 42a and front and rear rib portions 42b and 42c. A lower end of the shaped element I left plate 32 was fitted by a bolt Bl to a right end of the lower transverse tube lid. The left and right plate-like elements 32 and 42 and the lower transverse tube lid function as a lower bracket that supports the left and right ends of the pivot shaft 51 in the pivot bracket 11.

In the figure, the reference sign 42d shows a hole for inserting a bolt to fit the right plate-like element 42 to the lower transverse tube lid; the reference sign 42e shows a pivot hole allowing the insertion of the pivot shaft 51; and the reference sign 42f shows a square for inserting a fork pin (not shown) in the vehicle width direction of the right clamp cover 46; and the reference sign 42g shows a pedal support portion supporting a bolt 52a of a brake pedal 52.

The upper and lower right pipe elements 43 and 44 were formed of, for example, a circular steel pipe, in the same manner as the upper and lower left pipe elements 33 and 34. The upper right pipe element 43 extends backward from an upper outer portion of the right plate-like element 42 so that it tilts up and backward. The lower right pipe member 44 extends rearwardly from the lower outer portion of the right plate-like element 42 so that it tilts up and backward while forming a tilt deeper than the upper right pipe element 43. The ends of the upper and lower right tube elements 43 and 44 extend to the inner side in the vehicle width direction of the single right foot bracket bracket 45.

A front end 43a of the upper right pipe element 43 deforms inwardly and radially a central portion on the outer side in the width direction of the vehicle, and collapses to form a flat surface 43b on the inside in the direction of the width of the vehicle. Therefore, the front end 43a of the upper right pipe element 43 forms, inwardly in the vehicle width direction, the flat surface 43b of rectangular shape having a width corresponding to its diameter and a predetermined length. With the flat surface 43b protruding on an upper outer surface of the right plate-like element 42, the front end 43a of the upper right pipe element 43 was welded to the right plate-like element 42 over the entire periphery of the surface flat 43b. The portion composed of the front end 43a of the upper right pipe element 43 and an upper portion of the right plate shaped element 42 serves as an upper right welded joint S3 (see FIGS 2 and 7).

In the same way as the front end 43a of the lower right pipe element 43, a front end 44a of the lower left pipe element 44 was crushed to form, on the inside in the vehicle width direction, a flat surface 44b of rectangular shape having a width corresponding to its diameter and a predetermined length. With the flat surface 44b protruding on a lower outer surface of the right plate-like member 42, the front end 44a of the lower right tube member 44 was welded to the right plate-like element 42 over the entire periphery of the surface flat 44b. The portion composed of the front end 44a of the lower right pipe member 44 and a lower portion of the right plate member 42 serves as a lower right welded joint S4 (see FIG.7).

The upper and lower right pipe elements 43 and 44 were raised outwards in the vehicle width direction just behind the front ends 43a and 44a, respectively, and at the rear thereof, they formed upper right curved portions and lower 43d and 44d which are curved rearwardly of the vehicle, and then extended rearwardly in such a way that they tilted slightly so that the upper and lower right pipe elements 43 and 44 were located outwardly in the width direction of the vehicle. vehicle with a direction to the rear side. A rear master cylinder 53 with a brake pedal 52 in a braking system of the motorcycle 1 as its operating element is inwardly in the direction of the vehicle width of the upper and lower right curved portions 43d and 44d of the elements tube upper and lower rights 43 and 44.

Several right inclination beams (two in the figure) 43c are between the upper and lower right pipe elements 43 and 44 to form an articulated structure at the rear of the right plate 42 member.

In the same manner as in the left abutment support bracket 35, the right abutment support bracket 45 was formed, by pressing, for example, of a steel plate in a desired shape, and has an integral portion of side wall 45a and front and rear rib portions 45b and 45c. On the inside | in the vehicle width direction of the right abutment support bracket 45, a rear end of the upper right pipe element 43 was welded along the upper rib portion 45b, and a rear end of the lower right pipe element 44 was welded along the lower rib portion 45c. In the same way as at the front end 44a, a rear end of the lower right pipe element 44 was crushed to form a flat surface (not shown) of rectangular shape on the outside in the direction of the width of the vehicle.

On the outside side in the vehicle width direction of the right abutment support bracket 45, a support arm 45d supporting the right abutment of the rear seat 19 in an inclined manner is fixedly provided.

At one rear end of the right abutment support bracket 45, a cylindrical shock absorber support portion 45e supporting a top tie 24c of a shock absorber 24b located to the right of a rear portion of the frame was fixedly provided. of the vehicle and a rear end of an exhaust pipe 24a extending from the cylinder head 23b of the engine 21 was connected.

As shown in FIG. 3, the left fastener cover 36 has an integral shape: a left-plate-shaped portion 37 which is opposite in the direction of the width of the vehicle to the plate-shaped element-left 32; and a protruding left portion 38 protruding outwardly in the direction of the width of the vehicle corresponding to the front end 33a of the upper left tube element 33.

The left fastener cover 36 was provided in a continuous form below a portion of i lower extension 26a on the underside of a longitudinal intermediate portion of the left side cover 26. The lower extension portion 26a of the left side cover 26 extends downwardly so that its longitudinal width is reduced in the direction towards the underside in the side view. A front flange portion 26b of the lower extension portion 26a was tilted so that it was located rearward toward the underside. A rear flange portion 26c of the lower extension portion 26a is tilted so that it is located in the front toward the lower side. A lower flange portion 26d of the lower extension portion 26a was tilted up and back.

The left plate-shaped portion 37 of the left fastener cover 36, in the side view, forms an upper flange portion 37a which is located along the lower flange portion 26d of the lower extension portion 26a of the left side cover 26; a front flange portion 37b extending continuously downward from the front flange portion 26b of the lower extension portion 26a; and a lower flange portion 37d extending along an upper flange portion of the lower left reinforcement element 34b. The outer surface of the left plate-shaped portion 37 was substantially provided in alignment with the outer surface of the lower extension portion 26a of the left side cover 26 A rear portion of a step-up change pedal 54 it was placed on the outside side in the vehicle width direction of the lower flange portion 37d of the left fastener cover 36.

The upper left protruded portion 38 protrudes partially outwardly in the direction of the width of the vehicle from an outer surface of the left plate-like portion 37. The upper left protruded portion 38 extends along the tube element, upper left 33 while forming a hollow frame in the shape of a semicircular cross section. The front end 33a of the upper left tube element 33 (and, by extension, the upper left welded joint SI) protruding outwardly in the direction of the vehicle width from an outer surface of the left-plate element 32 of the stowage bracket left rear seat 31 was stored inside the upper left protruded portion 38.

As shown in FIG. 4, the right fastening cover 46 has in an integral manner: a portion with right-side panel 47 that opposes in the direction of the width of the vehicle the element in the form of a right plate 42; and upper and lower right protruding portions 48 and 49 protruding outwards in the direction of the vehicle width corresponding to the front ends 43a and 44a of the upper and lower right pipe elements 43 and 44.

The right clamp cover 26 has the lower extension portion 26a similar to that of the left side cover 26. The right clamp cover 46 was provided in a continuous form below the bottom extension portion 26a of the right side cover 26.

The right plate-like portion 47 of the right clamp cover 46, in the side view, forms an upper flange portion 47a which is located along the portion 26d of the lower extension portion 26a of the right side cover 26; a front flange portion 47b extending continuously downwardly of the front flange portion 26b of the lower extension portion 26a; a rear flange portion 47c extending continuously downwardly of the rear flange portion 26c of the lower extension portion 26a; and a lower flange portion 47d, with a rear portion cut away to prevent the pin 52a of the brake pedal 52, extending to the vicinity of the lower flange portion of the right plate-shaped portion 47. The outer surface of the right plate-like portion 47 is substantially proportionally aligned with the outer surface of the lower extension portion 26a of the right side cover 26.

As described above, the stirrup structure for the saddle-type vehicle according to the aforementioned embodiment was applied to a motorcycle 1 which includes left and right stirrup bras of the rear seat 31 and 41 having front ends installed on the saddle. frame frame 5 and rear ends supporting the left and right rear seat brackets 19 for a rear seat passenger.

The left abutment support of the rear seat 31 was formed with the left plate-like element 32 and the lower left tube elements 33 and 34 welded together. The left plate-shaped element 32 was located at a front end of the left abutment support of the rear seat 31 and was installed on the frame frame 5 in the vicinity of the left main stirrup 18 for a conductor. The upper and lower left tube elements j and 33 extend rearwardly from the upper and lower portions, respectively, of the left plate-like element 32 to support the left abutment of the rear seat 19 at the rear ends thereof. .

One of the joints (welded joint SI) welded SI and S2 between the left plate-like element 32 and the upper left and right tube elements 33 and 34 was covered with the left clamp cover 36, made of resin, which Can be installed removably to the bra I of left abutment of the rear seat 19.

In addition, the right abutment support of the rear seat 41 was formed with the right plate-like element 42 and the upper and lower tube elements I-43 and 44 welded together. The right plate-like element 42 is located at a front end of the right footboard bracket of the rear seat 41 and was installed on the frame frame 5 in the vicinity of the right main footboard 18 for a driver. The upper and lower right tube elements 43 and 44 extend rearward from l the upper and lower portions, respectively, of the right plate-like element 42 to support the right abutment of the rear seat 19 at the rear ends thereof.

All welded joints S3 and S4 between the right plate-like member 42 and the upper and lower right tube members 43 and 44 were covered with the right holder cover 46, made of resin, which can be installed removably. to the stirrup support 'right of the rear seat 41.

With this construction, the stirrup support of the rear seat was formed with a combination of plate-shaped elements and tube elements, which allowed the reduction of production costs of the stirrup support of the rear seat. Also, the welded joint between the plate-shaped element and the tube element was covered with the clamping cover made of resin as deemed appropriate, which allowed to maintain the quality of the appearance with the clamping cover and a reduction in the weight while achieving an optimization of the rigidity of the welded joint.

In the stirrup structure described above for the saddle-type vehicle, the left inclination beams 33c forming the articulated structure extend between the upper and lower left tube elements 33 and 34, and the right inclination beams 43c forming the articulated structure extends between the upper and lower right tube elements 43 and 44. Thus, the support stiffness against the loads in the left and right stirrups of the rear seat 19 can be secured efficiently.

In the stirrup structure described above for the saddle-type vehicle, the front ends 43a and 44a of the upper and lower right pipe elements 43 and 44 were flattened radially, and the flat surfaces 43b and 44b of the front ends 43a and 44a were welded to the right plate-like member 42. Thus, the welding length of the upper and lower right tube members 43 and 44 can be easily secured to the right plate-like member 42.

In the stirrup structure described above for the saddle-type vehicle, the front ends 33a and 34a of the left tube elements 33 and 34 were welded to the left plate-like element 32 through reinforcing elements 33b and 34b each one of the element in the form of a left plate 32. Thus, the welding length between the upper and lower left tube elements 33 and 34 and the left plate-like element 32 can be easily secured by reinforcing elements 33b and 34b .

In the stirrup structure described above for the saddle-type vehicle, the upper and lower right pipe elements 43 and 44 have the upper and lower right curved portions 43d and 44d extending outwardly in the width direction of the vehicle in the back of the welded joints S3 and S4. Also, the rear main cylinder 53 was placed inwardly in the vehicle width direction of the upper and lower right curved portions 43d and 44d. Thus, disturbances to the rear main cylinder 53 can be prevented by the pipe elements.

In the stirrup structure described above for the saddle-type vehicle, the left fastening cover 36 has an upper left protruded portion 38 which protrudes outwardly in the direction of the width of the vehicle in relation to the outer surface of the left-plate-shaped element. 32 to cover the upper left welded joint SI. Also the right fastener cover 46 has the upper and lower right protruding portions 48 and 49 that protrude outwardly in the direction of the width of the vehicle in relation to the outer surface of the right plate-like element 42 to cover the upper right welded joints. lower S3 and S4. Thus, a lighter appearance can be given, as compared to the case where the fastener cover extends outward in the direction of the width of the vehicle as a whole.

In the stirrup structure described above for the saddle-type vehicle, the upper portions of the right and left fastener covers 36 and 46 were provided continuously with the lower portions of the left and right side covers 26 located on the left covers. and right of the fastener 36 and 46. Thus, it is possible to provide certain safety on the feet of a driver while improving the quality of appearance on the periphery of the fastener covers.

It should be understood that the present invention does not limit the present embodiment. For example, the cover of the left fastener 36 can cover all the upper and lower welded joints SI and S2, in the same manner as the right fastener cover 46. Alternatively, the front ends 43a and 44a of the upper right tube elements can be used to cover the upper and lower welded joints. bottom 43 and 44 of the right abutment support of the rear seat 41 can be welded to the right plate-like element 42 through reinforcing elements, or the front ends 33a and 34a of the upper and lower left tube elements 33 and 34 of the The left abutment support of the rear seat 31 can be crushed radially to be welded to the element in the form of a left plate 32.

Some examples of a saddle-type vehicle include general vehicles where the driver sits with one foot on each side of the vehicle frame, and includes not only motorcycles (including motor-assisted bicycles and scooter-type vehicles), but also tread vehicles. wheels (including vehicles that have a wheel in front and two behind, as well as vehicles that have two wheels in front and one behind) or four-wheel vehicles.

In addition, the construction according to the present embodiment is only illustrative of the present invention, and several changes can be made without departing from the scope of the present invention.

List of reference symbols 1. .. Motorcycle (saddle type vehicle) 5. .. Frame Frame 18. .. Left and right main stirrups (main stirrup) 19. .. Left and right rear seat strips (rear seat bracket) 31. .. Seat bracket on the left rear seat (bracket support of the rear seat) 32. .. element with left plate shape (element with plate shape) 33. .. upper left tube element (tube that extends upwards) 33a ... front end Upper left reinforcement element (reinforcement element) left tilt beam (tilt element) Upper left welded joint (welded joint) lower left tube element (tube extending down) front end Lower left reinforcement element (reinforcement element) Lower left welded joint (welded joint) upper left protruding portion (protruding portion) Bracket support of the right rear seat (support bracket of the rear seat) element with right plate shape (plate-shaped element) upper right tube element (tube that extends upwards) front end right tilt beam (tilt element) upper right curve portion (curved portion) Upper right welded joint (welded joint) lower right tube element (tube that extends downwards) front end Lower right curve portion (curved portion) Lower right welded joint (welded joint) upper right protruding portion (protruded portion) lower right protruding portion (protruding portion) Posterior main cylinder

Claims (7)

1. A stirrup structure for a saddle-type vehicle (1), consists of a stirrup support of the rear seat (31, 41) having a front end fitted to a frame frame (5) and a rear end supporting a stirrup of rear seat (19) for a passenger in the rear seat i, wherein: the stirrup support of the rear seat (31, 41) was formed with a plate-shaped element (32, 42) and a tube element (33, 34, 43, 44) welded together. The plate-shaped element (32, 42) is located at a front end of the stirrup support of the rear seat (31, 41) and installed on the frame frame (5) in the vicinity of a main stirrup (18) for a conductor, the tube element (33, 34, 43, 44) extends rearwardly of the i plate-shaped element (32, 42) for supporting the back seat bracket (19) at a rear end thereof; Y at least a portion of a welded joint (SI, S2, S3, S4) between the plate-shaped element (32, 42) and the tube element (33, 34, 43, 44) were covered with a clamping cover (36, 46) made of resin that was removably installed to the back seat bracket (31, 41).

2. The running board structure for a vehicle of type < mount according to Claim 1, Where: the tube element (33, 34, 43, 44) includes I an upwardly extending tube (33, 43) and a downwardly extending tube (34, 44) extending backward from a portion top of the plate-shaped element (32, 42), and the lower tubes (34, 44) extend rearwardly of a lower portion of the plate-shaped element (32, 42); Y an inclined element (33c, 43c) forming an articulated structure is located between the tube that extends upwards (33, 43) and the tube that extends to low (34, 44).;

3. The stirrup structure for the saddle-type vehicle according to Claim 1 or 2, wherein a front end (43a, 44a) of at least a portion of the tube element (43, 44) is radially collapsed, and a The flat surface of the front end (43a, 44a) is welded to the plate-shaped element (42).

4. The stirrup structure for the saddle type vehicle according to Claim 1 or 2, wherein a front end (33a, 34a) of at least a portion of the pipe element (33, 34) is welded to the plate-shaped element (32) through a reinforcing element (33b, 34b) separated from the plate-shaped element (32).

5. The running board structure for the saddle-type vehicle according to any of claims 1 to 4, Where: at least a portion of the tube member (43, 44) has a curved portion (43d, 44d) extending outwardly in a vehicle width direction at a rear of the welded joint (S3, S4); Y a rear main cylinder (53) is inwardly in the vehicle width direction of the curved portion (43d, 44d).

6. The running board structure for the saddle-type vehicle according to any of claims 1 to 5, wherein the fastening cover (36, 46) has a protruded portion (38, 48, 49) protruding outwardly in the direction of the width of the vehicle relative to an outer surface of the plate-like element (32, 42). ) to cover the welded joint (SI, S3, S4).

7. The running board structure for the saddle-type vehicle according to any of claims 1 to 6, wherein the clamping cover (36, 46) has an upper portion that moves continuously to a lower portion of a frame cover (26) that is on the clamping cover (36, 46).