JP2003154982A - Pillion step structure for scooter type motorcycle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pillion step structure for a scooter type motorcycle capable of giving a control touch when operating a pillion step for opening and closing with a compact structure and capable of easily putting the pillion step in/out with a foot. SOLUTION: In a scooter type motorcycle with the structure wherein a pair of pillion steps 47 for a fellow passenger are arranged in both sides of a car body under a seat, each pillion step 47 is turnably supported and possible to be put in/out of a recessed part 12a formed in a car body. A torsion spring 53 is arranged on a surface parallel with a pillion step turning surface provided in a lower side of the pillion step 47, and the torsion spring 53 gives a control touch when operating the pillion step 47 for opening and closing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pillion step structure for a scooter type motorcycle in which a pair of left and right pillion steps for passengers are arranged on both sides of a vehicle body under a seat.

[0002]

2. Description of the Related Art For example, in a two-seater scooter type motorcycle equipped with a tandem seat, a pair of left and right pillion steps for placing a foot of a fellow passenger while traveling is arranged on both sides of the vehicle body below the seat. The pillion step includes a fixed type and a retractable type that can be inserted into and removed from a recess formed in a footboard or the like.

The retractable pillion step is pulled out from the recess when it is used and is stored in the recess so as not to get in the way when it is not used.

[0004]

However, in the retractable pillion step that does not use the spring for giving the biasing force, the detent feeling when putting it in and out is poor, and it is difficult to pull it out without using hands, which is inconvenient. There is a problem.

Further, when a coil spring is used to give a feeling of moderation to the opening / closing operation of the retractable pillion step, there is a problem that the reliability of the coil spring is lacked and the design is unsightly.

The present invention has been made in view of the above problems, and an object thereof is to provide a modest feeling to the opening and closing operation of the pillion step with a compact structure, and to easily perform the pillion step with a foot. An object is to provide a pillion step structure of a scooter type motorcycle that can be put in and taken out.

[0007]

In order to achieve the above object, the invention according to claim 1 is a scooter type motorcycle in which a pair of left and right pillion steps for passengers are arranged on both sides of the vehicle body below the seat. , Rotatably supporting each of the pillion steps so that the pillion steps can be put in and taken out from a recess formed in the side portion of the vehicle body, and on a plane parallel to the pillion step turning surface below the pillion steps. A torsion spring is arranged at the position, and the torsion spring is configured to give a feeling of moderation to the opening / closing operation of the pillion step.

According to a second aspect of the present invention, in the first aspect of the present invention, the torsion spring is biased in the direction in which the pillion step moves away from the neutral point with the intermediate pivot point of the pillion step as the neutral point. It is characterized by being placed in a position.

Therefore, according to the first aspect of the present invention, a flat torsion spring is used as a means for imparting a moderation sensation to the opening / closing operation of the pillion step, and the torsion spring is used as the pillion step rotation below the pillion step. Since it is arranged on a plane parallel to the moving surface, it is possible to give a feeling of moderation to the opening and closing operation of the pillion step with a compact structure, and the pillion step can be easily put in and taken out with a foot.

According to the second aspect of the present invention, the pillion step is urged by the torsion spring in any direction with the intermediate rotation point as the neutral point, so that there is a moderation feeling in the opening / closing operation (withdrawal). It is surely granted.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a side view of a two-seater scooter type motorcycle 1 having a pillion step structure according to the present invention. A head pipe 2 is located at the front upper part of the body of the scooter type motorcycle 1 shown in the drawing. A steering shaft 3 is rotatably inserted in the head pipe 2. A steering wheel 4 is attached to the upper end of the steering shaft 3, and a front fork 5 is attached to the lower end of the steering shaft 3.
A front wheel 6 is rotatably supported at the lower end of the.

A down tube 7 extends obliquely downward from the head pipe 2 toward the rear of the vehicle body, and then is bent and extends substantially horizontally toward the vehicle body. From this, a pair of left and right back stays 8 branch off and extend obliquely upward toward the rear of the vehicle body.

By the way, the head pipe 2, the down tube 7 and the like at the front of the vehicle body are covered with a front cover 9 made of resin, and the rear half of the front cover 9 constitutes a leg shield 10 also made of resin. There is.

Further, a tandem type seat 11 is disposed behind the handle 4, and a low space formed by a resin foot board 12 (see FIG. 2) between the seat 11 and the handle 4. A floor type footrest 13 is provided. A fuel tank 14 is arranged in the space below the footrest 13.

A unit swing type engine 15 as a power unit is provided behind the footrest 13 and below the seat 11.

The unit swing type engine 15 is arranged on the left side of the vehicle body, which is an engine 16 as a drive source.
And a transmission case 17 including a V-belt type automatic transmission (not shown) and a speed reduction mechanism are integrally formed. The transmission case 17 extends from the left side of the vehicle body of the engine 16 to the rear side of the vehicle body.
A rear wheel 18 is rotatably supported at its rear end. An air cleaner 19 is attached to the upper portion of the transmission case 17, and an intake pipe 20 extending from the air cleaner 19 toward the front of the vehicle body is connected to the intake system of the engine 16, and a carburetor 21 is provided in the middle thereof. ing.

The unit swing type engine 15 having the above structure is swingably supported up and down by an engine suspension bracket 22 fixed to the back stay 8 via a link mechanism 23, and its rear end is a rear wheel. It is supported by the back stay 8 together with 18 via a rear cushion 24.

On the other hand, the portion of the vehicle body below the seat 11 is covered with a resinous vehicle body cover 25, and the unit swing type engine 15 in the vehicle body cover 25 is covered.
A storage box 26 having an open upper surface is attached to the backstay 8 via front and rear cross members 27 and 28. The storage box 26 extends over the entire length of the seat 11 to ensure a large capacity, and as shown therein, a half-cap type helmet H1 and a full-face type helmet H2 can be stored at the same time. You can And this storage box 2
The seat 11 is supported on the seat 6, and the front end of the seat 11 pivots up and down around a hinge 29 to open and close the storage box 26. The left and right back stays 8 are provided with a cross member 30 in addition to the cross members 27 and 28. The cross members 27 and 28 are provided with the grab bar 3.
1 is attached.

By the way, in the scooter type motorcycle 1 according to the present embodiment, a small capacity sub tank 32 is provided on the left side of the head pipe 2 in the space surrounded by the front cover 9 and the leg shield 10 at the front of the vehicle body. The sub-tank 32 is connected to the large-capacity fuel tank 14 through a flexible fuel hose 33.

A fuel pump 43 is attached to the cross member 30 via a stay (not shown) below the front of the seat 11 and near the front end of the storage box 26 covered with the vehicle body cover 25. It is arranged. A negative pressure hose 44 extending from the intake system of the engine 16 is connected to the fuel pump 43.
Driven by the pulsation of the intake pressure, the fuel is sucked from the fuel tank 14 through the fuel hose 45 to increase the pressure of the fuel, and this fuel is supplied to the carburetor 21 through the fuel hose 46 to be used for forming the air-fuel mixture. The air-fuel mixture formed in the carburetor 21 is supplied to the engine 16 of the unit swing type engine 15 for combustion.

Details of the pillion step structure according to the present invention will be described with reference to FIGS. 2 is a left side view of the latter half of the scooter type motorcycle, FIGS. 3 and 4
2 is a view in the direction of arrow A in FIG. 2 showing an open / closed state of the pillion step, and FIG. 5 is a sectional view taken along line BB in FIG.

As shown in FIG. 2, the footboard 12 forming the footrest 13 extends rearward of the vehicle body to below the seat 11, and recesses 12a are formed at the left and right rear ends thereof.
(Only one is shown in FIG. 2) is formed, and both recesses 1
A pair of left and right retractable pillion steps 47 are rotatably provided on the 2a.

The above-mentioned pillion step 47 is a footrest for passengers, and is rotated around a rotation shaft 48 to be put in and taken out from the recessed portion 12a of the footboard 12. It is shown in FIGS. still,
3 to 5 show only one (left) pillion step structure, the other (right) pillion step structure is also the same, and therefore illustration and description thereof will be omitted.

As shown in FIG. 5, a metal bracket 49 is welded to the outer side of the back stay 8.
A metal sleeve 50 is welded to the bracket 49 so that its through hole is in the vertical direction.

On the other hand, the rotary shaft 48 is erected on the front end of the pillion step 47 by casting, and the rotary shaft 48 extends at right angles from the lower surface of the pillion step 47. Therefore, the rotary shaft 48 is fitted and inserted into the sleeve 50 from above, and the sleeve 50 of the rotary shaft is inserted.
By screwing the nut 51 to the end portion projecting downward from the pillion step 47, the pillion step 47 rotates around the rotation shaft 48 and is inserted into and removed from the recess 12 a of the footboard 12.

A notch 47a is formed in the front end of the pillion step 47 over a predetermined angle range.
At both ends of the notch 47a, there are engagement grooves 47 that are semicircular in plan view.
b and 47c are formed.

On the other hand, a stopper pin 52 is formed on the bracket 49, the stopper pin 52 faces the notch 47a of the pillion step 47, and the pillion step 47 has the engagement groove formed therein. 47
The footboard 1 is rotated about the rotation shaft 48 within an angle range until the b and 47c come into contact with the stopper pin 52.
It is put in and taken out from the second recess 12a.

Further, as shown in FIGS. 3 and 4, below the pillion step 47, the pillion step 4 is
A torsion spring 53 is provided in the space between the lower surface of 7 and the recess 12 a of the footboard 12. The torsion spring 53 is for imparting a moderation feeling to the opening / closing operation of the pillion step 47, and this is on a plane parallel to the rotation surface of the pillion step 47 and. 3 is set as the neutral point (see FIG. 4) and the pillion step 47 is moved away from the neutral point (that is, arrow a in FIG. 3).
It is arranged at a position where it is biased in the direction (storage direction) and the direction of arrow b (removal direction).

If the pillion step 47 is not used, for example, when the scooter type motorcycle 1 is parked, the left and right pillion steps 47 are shown in FIG.
As shown in FIG. 3, the footboard 12 is housed in the recess 12a. At this time, one of the engaging grooves 47b of the pillion step 47 is engaged with the stopper pin 52, and the housed state of the pillion step 47 is maintained.

When the scooter type motorcycle 1 is to be carried by two persons, the left and right pillion steps 4 stored in the recess 12a of the footboard 12 as shown in FIG.
When the passenger sits on the seat 11 and rotates the foot 7 outward with his / her foot, the pillion step 47 moves the torsion spring 53 around the rotation shaft 48 in the direction in which the torsion spring 53 is stored (the direction of arrow a).
It rotates outwards against the urging force of the torsion spring 53, and when it passes the neutral point, the torsion spring 53 is taken out (in the direction of arrow b).
Is rotated by the urging force of
As shown in FIG. 4, the engagement groove 47c is formed in the stopper pin 5
When it engages with 2, the further rotation is blocked. When the left and right pillion steps 47 are taken out in this manner, the passenger is taken out of the left and right pillion steps 47.
You can rest your feet on.

After that, when the scooter-type motorcycle 1 is stopped and gets off, the pillion step 47 becomes unnecessary. Therefore, if the passenger sits on the seat 11 and turns the pillion step 47 inward with his / her foot, the pillion step 47 can be performed. Step 47
Rotates inwardly around the rotating shaft 48 against the biasing force of the torsion spring 53 in the take-out direction (direction of arrow b), and when passing the neutral point, the torsion spring 53 moves in the storing direction (direction of arrow a). Rotate by the force
As shown in FIG. 5, the pillion step 47 is accommodated in the recess 12a. At this time, the engaging groove 47b of the pillion step 47 is engaged with the stopper pin 52 to maintain the pillion step 47 in the accommodated state.

As described above, according to the present embodiment, the flat torsion spring 53 is used as a means for imparting a moderation to the opening / closing operation of the pillion step 47. Since the pillion step 47 is arranged on a plane parallel to the pivot side of the pillion step 47, the pillion step 47 can be opened and closed with a compact structure, and the pillion step 47 can be easily taken in and out with the foot. be able to.

Further, since the pillion step 47 is biased by the torsion spring 53 in any direction (the storing direction and the withdrawing direction) with the intermediate pivot point as the neutral point, the opening and closing operation (withdrawal) of the pillion step 47 has a feeling of moderation. Is certainly given.

[0035]

As is apparent from the above description, according to the present invention, in each scooter type motorcycle, a pair of left and right pillion steps for passengers are arranged on both sides of the vehicle body below the seat. The step is rotatably supported so that the step can be taken in and out of the recess formed in the side portion of the vehicle body, and a torsion spring is provided on a surface parallel to the pillion step turning surface below the pillion step. Since the torsion spring is configured to give a feeling of moderation to the opening / closing operation of the pillion step, it is possible to give a feeling of moderation to the opening / closing operation of the pillion step with a compact structure, and the pillion step can be easily put in and taken out with a foot. The effect of being able to do is obtained.

[Brief description of drawings]

FIG. 1 is a side view of a scooter type motorcycle.

FIG. 2 is a left side view of the latter half of the scooter type motorcycle.

FIG. 3 is a view in the direction of arrow A in FIG. 2 showing a stored state of a pillion step.

FIG. 4 is a view taken in the direction of arrow A in FIG.

5 is a sectional view taken along line BB of FIG.

[Explanation of symbols]

1 scooter type motorcycle 11 sheets 12 footboard 12a recess 47 Pillion Step 48 rotation axes 52 Stopper pin 53 torsion spring

Claims (2)

[Claims] 1. A scooter type motorcycle comprising a pair of left and right pillion steps for passengers arranged on both sides of a vehicle body under a seat, wherein each pillion step is rotatably supported and the side portions of the vehicle body are supported. It is possible to put in and take it out from the recess formed in the pillion step, and a torsion spring is arranged on a plane below the pillion step and parallel to the pivot plane of the pillion step. A pillion step structure for a scooter-type motorcycle, characterized in that it is configured so as to provide a scooter type motorcycle. 2. The torsion spring is arranged at a position where the intermediate rotation point of the pillion step is a neutral point and the pillion step is biased in a direction away from the neutral point. Pillion step structure for a scooter type motorcycle.