JP3179303U - Oscillator for automatic tricycle - Google Patents

Abstract

Provided is a vehicle rocking device which can be driven stably even when an occupant leans outward due to centrifugal force when turning with a load in an auto three-wheeled vehicle having one front wheel and two rear left and right wheels.
A swing support member for attaching a front wheel 1 for supporting a front wheel and supporting a seat on which an occupant sits, a rear wheel swing arm 3 attached with two left and right rear wheels for transmitting driving force, and a rear wheel shock absorber 4. 7 The swing support member 7 is fastened to the front frame 1 via a swing rotation shaft, and the occupant can stably travel by tilting the front frame 1 during turning. A rear wheel frame 8 that is not interlocked with the swing of the front frame is attached to the swing support member 7, and the rear wheel frame 7 is kept parallel to the ground even when the occupant and the front frame 1 are tilted inward of the turn circle during turning. Therefore, even if a heavy load is placed on the rear wheel frame 8, the occupant's swinging motion is not affected.
[Selection] Figure 2

Description

  The present invention relates to an apparatus for swinging a vehicle body from side to side so that an automatic three-wheeled vehicle having one front wheel and two rear left and right wheels can turn stably.

  Motorcycles are widely used by ordinary people because they have a simpler structure and smaller vehicle dimensions than four-wheeled vehicles. However, because of its simplicity, load constraints and protection in bad weather are sacrificed. A three-wheeled vehicle with almost the same dimensions as a two-wheeled vehicle is manufactured, but the vehicle and the occupant are inclined to the outside due to centrifugal force when turning, so the vehicle must travel at a very low speed. It is limited to.

  In order to solve the above problems, three-wheel or four-wheel vehicles have been devised which are driven so as to incline the vehicle body inward during turning and balance with centrifugal force. Many of them forcibly tilt the frame that supports the occupant to the inside of the turning circle according to the vehicle speed and the steering angle by hydraulic or electric drive. Many vehicle swing mechanisms connect shock absorbers connected to the left and right wheels with parallel links to deform the links or directly move the shock absorber attachments. However, it is not widespread in general because of the high price due to the complexity of the equipment and the lack of a ride comfort that responds quickly to the occupant's feeling.

As another solution, a three-wheeled vehicle has been devised in which an occupant tilts the vehicle body inward when turning to drive to naturally balance centrifugal force. This is a frame that is similar to a two-wheeled vehicle that connects a shock absorber that supports the front wheel connected to the steering device and a rear wheel swing arm that carries a power device that drives the left and right rear wheels. However, this rear wheel swing arm is divided at the front and rear at the center and is connected by a rotating shaft with the vehicle traveling direction as an axis so as to be swingable. The rear wheel swing arm is fixed to the frame so as to be rotatable with a shaft passing through the left and right in the vehicle traveling direction, and the frame and the rear wheel swing arm are connected via a shock absorber at other points so that the impact from the road surface is not transmitted to the occupant. It has been devised.
FIG. 1 is a structural diagram of an existing three-wheeled vehicle equipped with a swing device.
However, with this structure, the front frame is the same structure as a two-wheeled vehicle, so there are still problems such as restrictions on loading capacity and insufficient stability to mount a large wind and rain protection device. It is only used in commercial vehicles.

JP, 2007-191128, A Wheel device

The second of the new category of vehicles (sleeters) Motorcycle Product News Honda Motor Co., Ltd. October 13, 1982

  The problem to be solved is that a passenger cannot tilt and stably drive due to centrifugal force when turning with a front wheel and two rear left and right three-wheeled motor vehicles loaded with luggage.

  The main feature of the present invention is a swinging structure in which components to which a rear wheel swing arm and a shock absorber are attached are connected so as to be able to rotate around a front frame and a vehicle traveling direction.

The structure of the present invention is a welded integrated structure in which a head pipe portion that supports a front wheel and has a front wheel cushioning function and a front fork for fixing a steering device to the upper portion and a pipe member that supports a seat on which an occupant sits are connected by a pipe or sheet metal member And a swing support member to which a rear wheel shock absorber is attached and a rear wheel swing arm to which two left and right pairs of rear wheels for transmitting driving force are attached. The swinging support member is fastened to the front frame so as to be swingable via a swinging rotation shaft, and the occupant can travel stably with the seated seat naturally tilted with the seated seat.
A rear wheel frame is attached to the swing support member. Therefore, the rear wheel frame moves with the rear wheel and does not interlock with the swing of the front frame. That is, even if the occupant and the front frame are tilted to the inside of the turning circle when turning, the rear wheel frame can be kept substantially parallel to the ground, and even if a heavy load is placed on the rear wheel frame, the occupant's swinging operation is affected. Absent.
Since the rear wheel frame is connected to the rear wheel swing arm via a shock absorber, there is an advantage that the impact when traveling on a rough road is reduced with respect to the rear wheel frame, that is, the load.

FIG. 1 is a structural diagram of an existing three-wheeled vehicle equipped with a swing device. FIG. 2 is a side view showing a method for carrying out the present invention. Example 1 FIG. 3 is a perspective view showing a method for carrying out the present invention. Example 1 FIG. 4 is a cross-sectional view of the swing rotation shaft and the swing support portion of the present invention. Example 1 FIG. 5 is an explanatory view of a state of swinging according to the present invention. Example 1

  The front frame uses a pipe or a sheet metal to be used in a normal motorcycle, and the swing pipe is integrally welded to the rear lower part of the head pipe and the seating part having a welded integrated structure. The rear wheel swing arm includes a portion for holding two left and right wheels driven by an electric or internal combustion engine, a mounting portion for a shock absorber, and a pivot portion for rotatably mounting. The swing support member is a metal plate that attaches a shock absorber to a substantially cylindrical portion that incorporates a bearing that is rotatably fitted to the swing rotation shaft of the front frame, and a cylindrical portion that allows a swing arm pivot shaft to pass through to the left and right. The part is formed as an integral structure. The swing support member is adjusted and connected so that there is no play on the swing rotation shaft of the front frame and the free rotation of the bearing is not hindered. For this reason, the front one wheel and the rear two wheels can swing according to the occupant's intention about the swinging rotation axis.

  FIG. 2 is a side view of an embodiment of the device of the present invention, and 1 to 6 are the same as those in FIG. In addition, 7. The swing support member is fitted to the swing rotation shaft of the front frame. 8). The rear wheel frame is coupled to the swing support member with bolts.

  As shown in FIG. 2, the angle of the swing rotation shaft is designed so that the extension line of the head pipe of the front frame passes through the point where it intersects the ground. A front wheel steering shaft is fitted to the head pipe of the front frame, and when the vehicle is steered, the front wheel rotates around this shaft to steer the traveling direction of the vehicle. Even if the vehicle swings because the swing rotation shaft intersects the extended line of the head pipe at the same point on the ground, there is no change in the steering force or the vehicle behavior.

  3 is a perspective view of the device of the present invention. The swing support member has a robust structure, but is designed to be a narrow structure so as not to interfere with the swing of the front frame.

  FIG. 4 is a cross-sectional view of the oscillating rotating shaft and the oscillating support portion of the device according to the present invention. It is inserted into the rotating shaft, and is adjusted and connected so that there is no play and free rotation of the bearing is not hindered. Accordingly, it is possible to lightly swing the vehicle based on the intention of the occupant while sufficiently handling the load of the vehicle, the occupant, and the load.

  FIG. 5 shows a state where the vehicle is inclined. 7). 7. Fastened to the swing support member The rear wheel frame maintains a horizontal state in the same manner as the two rear wheels stand upright on the ground even when the front frame on which the occupant sits is inclined. Therefore, even when a heavy load is placed on the rear wheel frame, the occupant's free swinging movement is not hindered. Further, even if a cover for protecting the occupant from the wind and rain is provided on the front frame, the stability operability of the vehicle is not greatly adversely affected.

  In this project, existing parts can be diverted to reduce manufacturing costs, and no special manufacturing technology is required, making it possible to respond to production with a low-load investment and time using conventional production equipment. The present invention is useful for providing a device that can more stably use a personal vehicle that is protected from wind and rain and a commercial vehicle that loads heavy loads.

DESCRIPTION OF SYMBOLS 1 Front frame 2 Head pipe 3 Rear wheel swing arm 4 Shock absorber 5 Swing rotation shaft 6 Swing arm pivot shaft 7 Swing support member 8 Rear wheel frame

Claims (1)

  In a three-wheeled motor vehicle having left and right wheels driven by an electric or internal combustion engine on one front wheel and one rear wheel, a swing rotation shaft is provided on the front frame in the vehicle traveling direction, a rear wheel swing arm and a shock absorber, A vehicle oscillating device characterized in that a oscillating support member to which is attached is rotatably fitted.

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