JP3672596B2 - Motorcycle - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a business scooter type motorcycle.
[0002]
[Prior art]
When scooter type motorcycles are used exclusively for business purposes, first of all, it is necessary to improve the loading capacity functionally.
[0003]
In view of this, it is conceivable to dispose large-capacity carriers on the front and rear sides of the vehicle body.
[0004]
[Problems to be solved by the invention]
However, in particular, in order to arrange a large-capacity front carrier at the front part of the vehicle body, it is required to secure the arrangement space, ensure the required cushion stroke, and the like. That is, in general, in a scooter type motorcycle, a front fork is provided at the front lower side of the steering shaft, and a front axle is provided directly below the front fork, so that the space in front of the steering shaft is limited by the upper part of the front fork. The lower end position of the front fork is limited by the front axle, and it is difficult to increase the cushion stroke corresponding to the increase in the capacity of the front carrier and the increase in the loading weight.
[0005]
Therefore, it is conceivable to change the relative positions of the steering shaft, the front fork, and the front axle, but there is a problem of interference with various wires around the steering when these are turned.
[0006]
The present invention has been made in view of the above circumstances, processing is an object of the present invention, along with improved loading capacity by placing the front carrier of a large capacity, ensuring the required cushion stroke a possible motorcycle It is to provide.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a pair of left and right pipe stays extending obliquely upward toward the front of the vehicle body at the front end portion of the down tube extending obliquely downward from the head pipe toward the rear of the vehicle body. A rear end is attached, a support stay is constructed between the front ends of the pipe stay, a first bracket and a second bracket are connected to the head pipe, and the support stay is connected to the head via the first bracket. allowed the support to the pipe, the bottom portion of the front carrier is attached to the support stay, said the rear part of the front carrier through the second bracket allowed supported by the head pipe, distribution of the front fork behind the front axle The steering shaft and the front fork, which are rotatably inserted into the head pipe, are arranged on substantially the same straight line in a side view. And wherein the door.
[0008]
[Action]
According to the present invention, a large space is secured above the front wheel in front of the steering shaft, and a large-capacity front carrier can be disposed in this large space. Therefore, the motorcycle has a loading capacity suitable for its use. Can be secured.
[0009]
According to the present invention, the front carrier is supported at its bottom by the down tube via the first bracket, the support stay and the pipe stay, and at the rear by the head pipe via the second bracket. that reason, it houses a of high weight can carry the, to the motorcycle not only the loading capacity, high loading capability in terms of loading weight is ensured. Since the front fork is offset to the rear of the front axle and the front fork and the steering shaft are arranged in a substantially straight line when viewed from the side, the bending moment acting on the under bracket connected to the lower end of the steering shaft is kept small. be able to.
[0010]
Furthermore, according to the present invention, since the front axle is offset in front of the front fork, the length of the front fork can be increased to ensure a large cushion stroke, and the riding comfort of the motorcycle can be improved. be able to.
[0011]
【Example】
Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.
[0012]
FIG. 1 is a side perspective view of a front portion of a motorcycle according to the present invention, FIG. 2 is a side view of the front portion of the motorcycle, FIG. 3 is a cutaway front view of an upper front fork (under bracket portion) of the motorcycle, and FIG. FIG. 5 is a partial side view of the rear lower portion of the front cover, FIG. 6 is a side view of the motorcycle according to the present invention, FIG. 7 is a plan view of the motorcycle, and FIG. 8 is a front view of the motorcycle. FIG.
[0013]
First, a schematic configuration of the motorcycle 1 according to the present invention will be described with reference to FIGS.
[0014]
The motorcycle 1 according to the present invention is a scooter type motorcycle for business use. The front part of the vehicle body is covered with a front cover 2, the rear part is covered with a side cover 3, and the entire vehicle body has front and rear parts thereof. The front wheel 4 and the rear wheel 5 are supported so that they can run freely.
[0015]
By the way, a basket-like front carrier 6 is mounted on the front cover 2, and a lower portion 2B of the front cover 2 that extends toward the front of the vehicle body (to the left in FIG. 6) below the front carrier 6. A headlight 7 is disposed at the central front end, and flasher lamps 8 are disposed on both sides of the headlight 7 so as to bulge out to the front side of the front cover lower part 2B. The front wheel 4 is rotatably supported at the lower end portion of the front fork 9 extending below the front cover 2, and the upper portion of the front wheel 4 is covered with a front fender 10.
[0016]
A handle 11 connected to the front fork 9 is disposed above the front cover 2, and a central portion of the handle 11 excluding the left and right grips 12 is covered with a handle cover 13.
[0017]
On the other hand, a seat 14 on which a rider should be seated is disposed at the center upper portion of the vehicle body, and a box-like rear carrier 16 is detachably mounted on a loading platform 15 provided behind the seat 14. Yes. The rear carrier 16 is provided with an opening / closing cover 16a that rotates around a hinge 17 attached to the front end surface thereof. When the opening / closing cover 16a is fully opened, as shown by a chain line in FIG. The front end surface abuts on the seat 14 and the opening degree is regulated. A handle stand 18 is attached to both sides of the loading platform 15.
[0018]
Thus, the rear carrier 16 is disposed above the rear wheel 5, and the rear wheel 5 is connected to an output shaft (not shown) extending from the rear end of the unit swing type power unit 19 to the side. It is bound. The rear wheel 5 is partially covered by the rear fender 20.
[0019]
By the way, in the present embodiment, three lateral grooves 21a are formed in parallel at appropriate intervals in the front-rear direction on the footboard 21 on which the rider should put his / her foot. When the motorcycle 1 is parked by a side stand (not shown) that can be attached to the vehicle, the lateral groove 21a is inclined because the vehicle body is inclined in the lateral direction, and rainwater accumulated on the footboard 21 is inclined to the lateral groove 21a. Will be discharged along. In FIG. 6, reference numeral 22 denotes a parking stand having left and right legs, which is a so-called one-way structure that can freely rotate in the standing direction and is restricted from rotating in the reverse direction (that is, the storage direction). Thus, the rotation restriction in the storage direction is released by a stepping lever (not shown). The parking stand 22 can also be used as a side stand by grounding only one of the left and right legs while the front and rear wheels 4 and 5 are both in a grounded state.
[0020]
As shown in FIG. 1, a head pipe 23 is accommodated in the front cover 2, and a steering shaft 24 is rotatably inserted into the head pipe 23. The steering wheel 11 is bound to the upper end of the steering shaft 24, and an under bracket 25 that is long in the vehicle width direction is bound to the lower end. As shown in FIGS. 3 and 4, the under bracket 25 is formed in a substantially straight line shape in the vehicle width direction in a plan view, and the upper ends of the pair of left and right front forks 9 are a plurality of bolts at both ends thereof. 26.
[0021]
Further, as shown in FIG. 3, the front fender 10 made of resin is bonded to the lower surface of the under bracket 25 by a plurality of bolts 27, and the left and right sides through which the front fork 9 of the front fender 10 is inserted. The hole 10a is closed by a lid member 28 integrally formed of resin.
[0022]
By the way, the front fender 10 is assembled from below the front fork 9. Here, the front fork 9 has a large-diameter outer tube 9b below the inner tube 9a, and a bracket 9c that supports the front axle 4a is provided at the lower end of the outer tube 9b. The said hole 10a formed in this becomes big, and there exists a possibility that the muddy water etc. which the front wheel 4 rolled up may infiltrate from the large hole 10a. Therefore, in this embodiment, as described above, the left and right holes 10a are closed by the lid member 28 integrally formed of resin.
[0023]
As described above, in the present embodiment, the left and right holes 10a of the front fender 10 are closed with the lid member 28, which is an integrally molded product, so that the number of parts can be reduced and the assemblability can be improved.
[0024]
By the way, as shown in FIG. 9, the lid member 28 is integrally formed with a cylindrical portion 28 a that penetrates the left and right holes 10 a of the front fender 10 and extends downward along the inner tube 9 a of the front fork 9. If the inner tube 9a of the front fork 9 is covered with the cylindrical portion 28a, it is not necessary to attach the dust boot to the inner tube 9a, and this can also reduce the number of parts and improve the assemblability. .
[0025]
Further, in the present embodiment, as shown in FIG. 4, a wide and smoothly curved recessed portion 25a for the wires is formed at the rear portions on both sides of the under bracket 25, and the recessed portion 25a is provided around the steering wheel. Various wires (front wheel brake wire and throttle wire) 50 are arranged. As shown in FIGS. 1 and 4, the wire 50 is routed through a hole 10 b formed in the front fender 10, and these wires are not provided inside a pipe stay 37 described later. It is held by the illustrated guide.
[0026]
Thus, even when the handle 11 is turned to the left as shown in FIG. 4, the wire 50 is effectively protected by the guide function of the recess 25a formed in the under bracket 25, and its durability is improved. It is done. As described above, each concave portion 25a is formed in a wide and smoothly curved shape at both side rear portions of the under bracket 25. Therefore, stress concentration does not occur in the under bracket 25, and the under bracket 25 has insufficient strength. There is nothing. Further, since the under bracket 25 and the hole 10b formed in the front fender 10 are close to each other and the recess 25a is formed to be smoothly curved, the recess 25a causes the wire 50 to interfere with the vehicle body frame. Avoid and securely hold and guide.
[0027]
By the way, in this embodiment, as shown in FIG. 1, the steering shaft 24 and the front fork 9 are arranged in a substantially straight line in a side view, and as shown in FIG. 6, the front fork 9 has the front axle 4a. Located behind. That is, since the front axle 4a is offset to the front of the front fork 9, the front fork 9 can be lengthened to ensure a large cushion stroke, and the riding comfort of the motorcycle 1 can be improved. it can.
[0028]
In this embodiment, the front carrier 6 is disposed in a large space formed by the steering shaft 24 and the front wheel 4, and lighting devices such as a headlight 7 and a flasher lamp 8 are disposed below the front carrier 6. A large capacity can be secured in the front carrier 6, and a high load can be loaded on the front carrier 6.
[0029]
Here, the mounting structure of the front carrier 6 will be described.
[0030]
As shown in FIG. 1, the head pipe 23 is attached with a front end of one down tube 29 extending obliquely downward toward the rear of the vehicle body, and brackets 30, 31, 32 are respectively provided from above. It is bound. A pair of left and right nuts 34 is welded to the bracket 30, and a bolt shaft 33 is bound to each nut 34. A mounting bracket 40 is attached to the tip of each bolt shaft 33 by a nut 41. The bracket 31 is attached with a hook 35 positioned on the front side of the rider.
[0031]
On the other hand, a rear end portion of a pair of left and right pipe stays 37 is attached to the bracket 36 fixed to the front end portion of the down tube 29, and both the pipe stays 37 extend obliquely upward while expanding forward. A support stay 38 is installed between the front end portions. The pipe stay 37 and the support stay 38 are unitized as an integral structure.
[0032]
The support stay 38 is also supported by the head pipe 23 via the bracket 32. That is, a bolt (not shown) projects forward from the front end of the bracket 32, and the support stay 38 is attached to the bracket 32 by inserting the support stay 38 into this bolt and tightening a nut (not shown). ing. Nuts (not shown) are welded to the left and right of the support stay 38, and bolts 43 are screwed to the nuts. Each bolt 43 attaches a mounting bracket 42 to the support stay 38 with a collar 39 interposed therebetween. ing.
[0033]
Thus, a large space is secured in front of the front cover 2, and the front carrier 6 is arranged in this large space. That is, the front carrier 6 is assembled by attaching the rear surface portion to the pair of left and right mounting brackets 40 and binding the left and right bottom surface portions to the pair of mounting brackets 42.
[0034]
As described above, in the present embodiment, the front carrier 6 is disposed in a wide space formed in front of the steering shaft 24. Therefore, the front carrier 6 having a large capacity can be used. The loading capacity of the motorcycle 1 can be increased, and the motorcycle 1 can fully exhibit business functions.
[0035]
Further, since the front carrier 6 is supported by the head pipe 23 and the down tube 29 via the wide support stay 38, the pipe stay 37 and the brackets 36, 32 and 30, a heavy load is accommodated in this. In addition, the motorcycle 1 is secured not only with a load capacity but also with a high load capacity in terms of load weight.
[0036]
By the way, in this embodiment, as shown in FIG. 2, since the concave portion 13a that opens forward is formed in the lower front portion of the handle cover 13 in a side view, the wind from the front is directed to the handle cover. 13 is widely received, and smoothly flows to both sides along the recess 13a. Therefore, the rectifying effect by the handle cover 13 is enhanced, and the running resistance of the motorcycle 1 is kept small.
[0037]
Further, in this embodiment, as shown in FIG. 5, recessed portions 2 a that are opened sideways are formed on the left and right of the rear lower portion of the front cover 2 that stands obliquely in front of the footboard 21. Therefore, a sufficient space for the rider's foot is secured and the rider can get on and off easily.
[0038]
【The invention's effect】
As is clear from the above description, according to the present invention, a pair of left and right extending diagonally upward toward the front of the vehicle body is provided at the front end portion of the down tube that extends obliquely downward from the head pipe toward the rear of the vehicle body. A rear end portion of the pipe stay, a support stay is installed between the front end portions of the pipe stay, a first bracket and a second bracket are attached to the head pipe, and the support stay is attached to the first bracket. The front pipe is supported by the head pipe, the bottom surface of the front carrier is attached to the support stay, the rear surface of the front carrier is supported by the head pipe via the second bracket, and the front fork is attached to the front axle. The steering shaft and the front fork, which are arranged behind the vehicle and are rotatably inserted in the head pipe, are substantially collinear in a side view. Since placed, while achieving a loading capacity field enhancement of the motorcycle by arranging the front carrier of a large capacity, there is an advantage that it is possible to ensure the required cushion stroke.
[Brief description of the drawings]
FIG. 1 is a side perspective view of a front portion of a motorcycle according to the present invention.
FIG. 2 is a side view of the front portion of the motorcycle according to the present invention.
FIG. 3 is a cutaway front view of an upper front fork (under bracket portion) of the motorcycle according to the present invention.
Fig. 4 is a plan view of the under bracket of the motorcycle according to the present invention.
FIG. 5 is a partial side view of the lower part of the leg shield of the motorcycle according to the present invention.
Fig. 6 is a side view of the motorcycle according to the present invention.
Fig. 7 is a plan view of the motorcycle according to the present invention.
Fig. 8 is a front view of the motorcycle according to the present invention.
FIG. 9 is a cutaway front view of an upper front fork (under bracket portion) of a motorcycle showing a modified embodiment of the present invention.
[Explanation of symbols]
1 Motorcycle 4 Front Wheel 4a Front Axle 9 Front Fork 24 Steering Shaft 25 Under Bracket 25a Wire Relief Recess

Claims (1)

A rear end portion of a pair of left and right pipe stays extending obliquely upward toward the front of the vehicle body is attached to a front end portion of the down tube extending obliquely downward from the head pipe toward the rear of the vehicle body, and the front end of the pipe stay A support stay is erected between the sections , the first and second brackets are attached to the head pipe, the support stay is supported by the head pipe via the first bracket, and the front carrier is attached to the support stay. And the rear surface of the front carrier is supported by the head pipe via the second bracket, and the front fork is disposed behind the front axle so that it can rotate into the head pipe. A motorcycle, wherein the inserted steering shaft and the front fork are arranged on substantially the same straight line in a side view.

Images