JPH02114076A - Motorcycle equipped with side wheel - Google Patents

Abstract

PURPOSE:To improve the traveling performance by reducing the car width in the ordinary traveling where side wheels are raised by supporting the side wheel installed on the side part of a car body in free elevation and lowering for the car body and allowing said side wheels to be accommodated inside in the width direction of the body at the rising position in comparison with the case of the lowering position. CONSTITUTION:If a motorcycle is brought into near stop through deceleration during the state where side wheels Ws are accommodated into the chained-line position, and a driver pulls a hand lever 26 in the A-direction to the position shown on the figure, a slide shaft 17 is shifted in the C-direction against a spring 18 through a torque tube 25, arm 27, etc. Then, a ring bracket 20 is pressed through a connecting rod 23, and a swing arm 7 turns around the axis line L of a bearing boss 4, and the side wheels Ws axially supported at the top edge are lowered to the position shown by the full line. At this time, the side wheel Ws is supported so that the side wheel Ws is accommodated inside in the axial direction of the car body with the rising attitude in comparison with the case of the lowering attitude, by the action of the inclination angle of the bearing boss 4.

Description

[Detailed description of the invention] A3 Purpose of the invention (1) Industrial application field The present invention provides a vehicle body equipped with side wheels in order to compensate for the uprightness of the vehicle body when driving at extremely low speeds immediately after starting or immediately before stopping. Regarding two-wheeled vehicles with side wheels.

(2) Conventional technology-IIQ, when operating a two-wheeled vehicle, immediately after starting or just before stopping, the driver places his feet on the ground to ensure that the vehicle remains upright, but such operations are troublesome. .

For this reason, two-wheeled vehicles with side wheels have been developed that have small-diameter side wheels supported via cushions on both sides of the vehicle body to assist the uprightness of the two-wheeled vehicle when running at low speeds without worrying about the rider's legs. It has been proposed (Japanese Unexamined Patent Publication No. 59-1993)
(See Publication No. 83).

(3) Problems to be solved by the invention However, since the side wheels of the above-mentioned two-wheeled vehicle are fixed to the vehicle body and cannot be folded, the overall width of the vehicle body increases due to the side wheels, making it difficult to pass on narrow roads. In addition to this, there is a problem in that the side wheels come into contact with the ground when turning, impairing ride comfort.

The present invention has been made in view of the above circumstances, and provides a two-wheeled vehicle with side wheels that assists the uprightness of the vehicle body when running at extremely low speeds immediately after starting or just before stopping, and which does not impede driving during normal running. The purpose is to

B1 Structure of the invention (1) Means for solving the problem In order to achieve this object, the present invention provides a two-wheeled vehicle with a side wheel, which is provided with a side wheel on at least one side of the vehicle body. The first feature is that the side wheels are supported in a vertically movable manner and can be stored inside the vehicle body in the width direction in the raised position relative to the lowered position.

The present invention also provides a two-wheeled vehicle with side wheels that is provided with a side wheel on at least one side of the vehicle body, in which the side wheel is supported on the vehicle body so as to be movable up and down, and the side wheel is constantly biased from a lowered position to a raised position. The second feature is that the lifting device includes a lifting device having a resilient member that moves.

(2) Effect According to the first feature above, when driving at extremely low speeds, the lowered side wheels allow the car body to stand on its own, and during normal driving, the side wheels are raised, increasing the width of the car body so as not to interfere with driving. It can be stored inside the direction. Moreover, according to the second feature, since the side wheels are urged from the lowered position to the raised position by the resilient member of the lifting device, the storage operation to the raised position can be easily performed.

(3) Examples Hereinafter, the present invention will be explained in detail with reference to the drawings.

The motorcycle shown in FIGS. 1 and 2 is equipped with a front wheel Wf and a rear wheel Wr at the front and rear of a vehicle body B, and the driver is seated in a backward leaning position on a seat S with a backrest provided in the center of the vehicle body B. You are supposed to sit on it.

A pair of side wheels Ws are provided on both sides of the vehicle body 8 at the bottom of the above-mentioned Sea) S, and these side wheels Ws lower to the position indicated by the solid line when driving at extremely low speeds to assist the uprightness of the vehicle body, and also to assist in the uprightness of the vehicle body. When driving, it is raised to the position indicated by the chain line and stored.

As shown in FIGS. 3 and 4, the body frame of a motorcycle includes a pair of left and right lower stringers 1a, 1b made of steel pipes and a pair of left and right upper stringers 2a, 2b. Strong L-shaped brackets 3 are welded to the threads 2a and 2b, respectively. The lower end of a cylindrical bearing boss 4 on the bracket 3 is supported by a pivot shaft 5 disposed in the longitudinal direction of the vehicle body so as to be able to swing vertically. By making it come into contact with the buffer member 6, its upward swing is restricted. As is clear from FIG. 4, the axis of the bearing post 4 in contact with the buffer member 6 is arranged with its upper end expanded outward by an angle θ from the center plane H of the vehicle body. .

A swing arm 7 rotatably supported around the axis is held by a port 8 on the bearing boss 4, and a knuckle arm lO is pivotally supported at the tip of the swing arm 7 with a pin 9. The axle 11 protruding from the
A side wheel Ws is rotatably attached. A link bracket 10b extending rearward from this knuckle arm 10 and a link bracket 12 fixed to the rear part of the upper longitudinal members 2a, 2b are connected to a ball joint 13°14.
The swing arm 7, the tie rod 15, and the upper longitudinal members 2a and 2b are connected via a tie rod 15.
, and the knuckle arm 10 constitute a four-bar link.

On the other hand, a slide shaft 17 is supported by a slide guide 16 welded to the center of a cross member 20 that connects the upper longitudinal members 2a and 2b to the left and right so as to be slidable back and forth, and the spring seat 17a and the slide guide The slide shaft 17 is urged forward by a spring 18 as a resilient member inserted between the slide shafts 16 and 16. A boss 19 is fixed to the rear end of the slide shaft 17, and a link bracket 20 fixed to the boss 19 and the upper ends of the left and right swing arms 7 is connected to a pole joint 21.
22 and a connecting rod 23.

A torque tube 25 is rotatably supported on left and right brackets 24 fixed to the front portions of the lower longitudinal members 1a and lb, and a hand lever 26 is integrally fixed to the right end of the torque tube 25. . An arm 27 is fixed to the center of the torque tube 25, and the tip of the arm 27 and the tip of the slide shaft 17 are connected by a connecting plate 30 via pins 28 and 29.

An L-shaped ratchet lever 31 is pivotally supported at the middle portion of the hand lever 26, and this ratchet lever 31 is connected via a rod 32 to a claw piece 33 pivotally supported at the lower part of the hand lever 26.

The pawl piece 33 is biased by a torsion spring (not shown) in the direction of engagement with a ratchet wheel 34 that is integrally fixed to the right bracket 24.

Next, the operation of this embodiment will be explained.

When the two-wheeled vehicle running with the side wheel Ws stored in the position indicated by the chain line decelerates and is about to stop, the driver operates to pull the hand lever 26 in the direction of arrow A to the position shown. At this time, the pawl 33 automatically passes over the teeth of the ratchet wheel 34, so there is no need to manipulate the ratchet lever 31. The force is transmitted, and the slide shaft 17 is moved in the direction of arrow C against the elastic force of the spring 18.

Then, the link bracket 20 is pressed through the connecting rod 23, and the swing arm 7 is moved to the bearing boss 4.
The side wheel W rotates around the axis of the wheel and is pivotally supported at its tip.
S descends from the position of the dashed line to the position of the solid line.

At this time, as shown in FIG. 3, the left and right connecting rods 23 are at a so-called dead point where they are aligned in a straight line in the left-right direction, and the rotation moment of the swing arm 7 around the axis is transmitted from the side 1QWs in contact with the ground. is not transmitted to the hand lever 26 side. Further, the vertical IJi impact transmitted from the side wheel Ws in contact with the ground is transmitted to the bearing boss 4 via the swing arm 7.
and is absorbed by the buffer member 6 that comes into contact with the bearing boss 4. Furthermore, when the side wheel Ws is in the lowered position,
By restricting the link bracket 10a of the knuckle arm 10 with the tie rod 15, the attitude of the side transport Ws is maintained so as to face in the longitudinal direction of the vehicle body.

When the speed of the two-wheeled vehicle that started with the side wheel Ws lowered increases and the uprightness increases, the driver moves the ratchet lever 31.
, and press the hand lever 26 in the direction of arrow B with the pawl piece 33 and ratchet wheel 34 released from each other.

As a result, the slide shaft 17 is assisted by the elastic force of the spring 18 and moves in the direction indicated by the arrow, and the swing arm 7 rotates around the axis of the bearing post 4 to raise the side wheel Ws to the storage position indicated by the chain line. let

At this time, due to the effect of the inclination angle θ of the bearing boss 4, the raised side wheel Ws is housed on the inner side in the width direction of the vehicle body than when it was in the lowered position. That is, when the inclination angle θ is 90', the side wheels Ws rise rearward and upward and do not move inward in the width direction of the vehicle body, and when the inclination angle θ is 0°, the side wheels The wheel Ws moves inward in the width direction of the vehicle body without rising.

Therefore, by setting the inclination angle θ to a predetermined angle greater than 0° and smaller than 90°, the side wheel Ws can be moved inward in the width direction of the vehicle body while being raised. This results in
Both wheels WS, which were separated by a distance L1 larger than the width of the vehicle body B in the lowered position, are compactly stored in a state in which they approach a distance Lt smaller than the width of the vehicle body B in the raised position.

Further, as the swing arm 7 rotates rearward, the inner surface of the side wheel Ws, which has been facing the vehicle body, now faces the front side of the vehicle body. However, with the rearward rotation of the swing arm 7, the knuckle arm lO, which is pressed in the direction of arrow E by the tie rod 15, rotates around the bin 9 in the direction of arrow F together with the side wheel Ws, and the side The attitude of the wheel Ws is maintained in the longitudinal direction of the vehicle body, thereby saving storage space and reducing air resistance.

FIG. 5 shows a second embodiment of the present invention, in which the same members as in the previous embodiment are denoted by the same reference numerals, and redundant explanation thereof will be omitted.

This embodiment is equipped with an L-shaped pedal 36 rotatably supported by a pivot shaft 35 on the floor of the vehicle body, and both ends of a connecting rod 37 are connected to the lower end of the pedal 36 and the tip of the slide shaft 17. supported.

Therefore, when the driver depresses the pedal 36 and moves the slide shaft 17 rearward, the side wheel Ws, which was housed in the position shown by the solid line, can be lowered to the position shown by the chain line, as in the previous embodiment.

Moreover, if a ratchet (not shown) is released to release the restraint of the slide shirt 1-17, the side wheel Ws can be automatically raised to the storage position by the action of the spring 18 as a resilient member.

FIGS. 6 and 7 show a third embodiment of the present invention in which a hydraulic cylinder is used to operate the side wheel Ws. In this embodiment, the same members as those in the first embodiment are designated by the same reference numerals, and redundant explanation thereof will be omitted.

As shown in FIG. 6, the left and right upper stringers 2a.

A bracket 38 is fixed to the center of the cross member 20 that connects the parts 2b, and a hydraulic cylinder 40 driven by a hydraulic pump 39 is attached to the bracket 38. The slide shaft 17, which passes through the hydraulic cylinder 40 in the front and back directions, is pivotally supported by the connecting plate 30 at the front end and fixed to the boss 19 at the rear end, as in the first embodiment.

Brackets 2 fixed to the left and right lower longitudinal members 1a and lb
A torque tube 25 connected to the connecting plate 30 via an arm 27 is pivotally supported on the 4.
A ratchet wheel 41 and a pedal 42 for lowering the side wheel Ws, which is operated by the driver's foot, are fixed to the left end of the torque tube 25. In addition, a shaft 4 is supported on a bracket 43 fixed to the front part of the left lower longitudinal member 1a.
An arm 45 is fixed to 4, and a claw piece 46 that can be engaged with the ratchet wheel 41 is pivotally supported at the tip of this arm 45. And the arm 45 and the claw piece 4
6 are each biased in the direction of engagement with the ratchet wheel 41 by a torsion spring (not shown). Furthermore, a pedal 47 that is operated by the driver's foot is fixed to the shaft 44, and by stepping on this pedal 47, the engagement between the ratchet wheel 41 and the claw piece 46 can be released.

As shown in FIG. 7, the hydraulic cylinder 40 is partitioned into a front chamber 40a and a rear chamber 40b by a piston 48 fixed to the center of the slide shaft 17.
A spring 49 as a resilient member that biases the slide shaft 17 in the direction of the arrow is mounted inside b. The hydraulic pump 39 for driving the slide shaft 17 in the direction of arrow C is interposed in the high pressure oil passage 51 connecting the front chamber 40a of the hydraulic cylinder 40 and the oil tank 50, and the rear chamber 40b of the hydraulic cylinder 40 communicates with the oil tank 50 through a low pressure oil passage 52.

A pair of power lines 53, 54 connected to the hydraulic pump
is grounded to the vehicle body B, and one power line 53 includes a battery 55, an operation switch 56 that closes when operated by the driver, and a limit switch that operates when the slide shaft 17 reaches the end of its stroke in the direction of arrow C. 5
A break contact 58 of No. 7 and a break contact 59 of a relay (not shown) which is activated when the vehicle speed exceeds a predetermined value are interposed in series.

Next, the operation of this embodiment will be explained.

The side wheels Ws of the running two-wheeled vehicle have been raised to the storage position, and the slide shaft 17 is moving forward in the direction of the arrow.

As a result, the limit switch 57 is not activated and its break contact 58 is closed. When it is detected that the two-wheeled vehicle has decelerated to a speed below a predetermined value in order to stop,
Furthermore, the break contact 59 is also closed. When the driver closes the operation switch 56 in this state, the hydraulic pump 39 is operated by the battery 55, and pressure oil is supplied to the front chamber 40a of the hydraulic cylinder 40 via the high pressure oil path 51, and the pressure in the rear chamber 40b is Oil is supplied to the oil tank 5 via a low pressure oil passage 52.
Reflux to 0. Then, the piston 48 moves backward while compressing the spring 49 and presses the slide shaft 17 in the direction of arrow C, and the side wheel Ws descends to the position shown. When the slide shaft 17 retreats to the stroke end, the limit switch 57 is activated and the break contact 5
8 is opened and the hydraulic pump 39 is stopped. At this time, as the slide shaft 17 moves, the torque tube 25
rotates in the direction of arrow G, but since the ratchet wheel 41 rides over the claw piece 46, the operation of the hydraulic cylinder 40 is not hindered.

When the side wheel Ws is lowered as described above, the torque tube 25 is
Rotation in the direction of arrow H is restricted, and the side wheel Ws is locked in the lowered position. When the two-wheeled vehicle starts with the side wheel Ws lowered and increases in speed and becomes more upright, the driver depresses the pedal 47 to rotate the shaft 44 in the direction of arrow 1. Then, the engagement between the claw piece 46 and the ratchet wheel 41 is released, and the torque tube 25 can now rotate freely.
The slide shaft 17 moves forward in the direction of the arrow by the elastic force of a spring 49 installed in the cylinder 40, and moves toward the side wheel Ws.
Raise it to the storage position.

Furthermore, if the hydraulic pump 39 cannot be used, the side wheel Ws can be lowered manually by depressing the pedal 42 and rotating the torque tube 25 in the direction of arrow G. At this time, the ratchet wheel 41 is
6, the operation of the pedal 42 is not hindered.

According to this embodiment, not only can the lowering of the side wheel Ws be easily performed using hydraulic pressure, but also the break contact 59 opens to restrict the operation of the hydraulic pump 39 when the vehicle speed of the two-wheeled vehicle is higher than a predetermined value. , it is reliably prevented that the side wheel Ws is erroneously lowered during high-speed driving.

Although the embodiments of the present invention have been described above in detail, the present invention is not limited to the embodiments described above, and various small design changes may be made without departing from the scope of the invention described in the claims. It is possible to do so.

For example, the side wheels Ws do not necessarily need to be provided on both sides of the vehicle body, and may be provided only on one side of the vehicle body.

Moreover, it is also possible to use an electric motor instead of lifting and lowering the side wheel Ws using human power or hydraulic pressure.

C0 Effects of the Invention As described above, according to the first feature of the present invention, the side wheels are supported on the vehicle body so as to be freely raised and lowered, and the side wheels are housed inside the vehicle body in the width direction in the raised position relative to the lowered position. This not only makes it possible to lower the side wheels to compensate for uprightness when driving at extremely low speeds, but also when driving normally with the side wheels raised, the side wheels move inward in the width direction of the vehicle body, increasing the width of the vehicle. This reduces the amount of water and does not interfere with driving. Moreover, since this side wheel has the function of a stand, it becomes possible to omit the conventional stand.

Further, according to the second feature of the present invention, since the side wheel is urged from the lowered position to the raised position by the elastic member, it is easy to store the side wheel upward against gravity. This not only makes it possible to do this, but also prevents the side wheels Ws from erroneously lowering due to the action of gravity while driving.

[Brief explanation of drawings]

Fig. 1 is a schematic side view of a two-wheeled vehicle with side wheels according to the first embodiment of the present invention, Fig. 2 is a front view thereof, Fig. 3 is an enlarged view of the main parts thereof, and Fig. 4 is a direction shown in Fig. 3 in the ■ direction. 5 is a side view of a two-wheeled vehicle with side wheels according to a second embodiment of the present invention, FIG. 6 is an enlarged view of main parts of a two-wheeled vehicle with side wheels according to a third embodiment of the present invention, and FIG. The figure shows the control mechanism. B...Vehicle body, Ws...Side transport, 18.49...Spring (spring member) 1st section

Claims (2)

[Claims] (1) In a two-wheeled vehicle with a side wheel provided with a side wheel on at least one side of the vehicle body, the side wheel is supported on the vehicle body so as to be freely raised and lowered, and the side wheel is positioned inside in the width direction of the vehicle body in a raised position relative to a lowered position. A two-wheeled vehicle with side wheels, which is characterized by being able to be stored in. (2) In a two-wheeled vehicle with a side wheel provided with a side wheel on at least one side of the vehicle body, the side wheel is supported on the vehicle body so as to be able to rise and fall freely, and a spring that constantly urges the side wheel from a lowered position to a raised position. A two-wheeled vehicle with side wheels, characterized in that it is equipped with a lifting device having a member.