JP3179304U - Oscillation lock mechanism for oscillating automatic tricycle - Google Patents

Abstract

To provide a vehicle rocking lock device capable of freely rocking left and right in the traveling direction of a vehicle in a three-wheeled vehicle including one front wheel and two rear left and right wheels and capable of stably driving even at a low speed.
A rear frame having one front wheel and two rear left and right wheels, a front frame for supporting a front wheel and supporting a seat on which an occupant sits, and a rear wheel swing arm and two rear wheels for transmitting driving force. It consists of the rocking | fluctuation support member 5 which attaches a wheel buffering device. The swing support member is fastened to the front frame via the swing rotation shaft 4, and the occupant can travel stably by tilting the front frame when turning, but it is attached to the front frame when the speed falls below a certain speed. The actuated actuator 6 pushes the wedge-shaped guide pin 7 into the guide plate attached to the swing support member. Even if the vehicle is inclined, the wedge of the guide pin pushes the guide plate to forcibly hold the vehicle and lock it.
[Selection] Figure 2

Description

  The present invention relates to a mechanism that locks the left and right swing of an automatic three-wheeled vehicle that has one front wheel and two rear left and right wheels that swing according to the intention of the occupant.

  Motorcycles are widely used by ordinary people because they have a simpler structure and smaller vehicle dimensions than four-wheeled vehicles, but at the expense of load restrictions and protection in bad weather. 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.

  As a solution to this problem, a three-wheel vehicle is also manufactured in which the occupant tilts the vehicle body inward when turning to drive to naturally balance centrifugal force. It is equipped with a front frame similar to a two-wheeled vehicle that connects a head pipe into which a front fork that holds a front wheel connected to a steering device and a front wheel connected to a steering device is inserted, and a power device that drives two left and right rear wheels The rear wheel swing arm is connected to the rear wheel swing arm, and the rear wheel swing arm is divided into front and rear parts at the center, and is connected by a rotating shaft with the vehicle traveling direction as an axis so as to be swingable. Due to this structure, it is necessary to support the tilting of the vehicle with the feet when the vehicle runs at a low speed or stops.

When the vehicle is parked, a pin that is moved by another operating lever is engaged with and locked in the hole of the swinging device, and the wheel is braked so that the vehicle cannot move.
However, this structure has a problem that it can be fitted only at a limited position where the hole and the pin accurately mesh with each other, and cannot be operated during traveling.

JP 2010-149828 three-wheeled bicycle Murata Vehicle Co., Ltd.

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 in a three-wheeled motor vehicle having one front wheel and two rear left and right wheels and capable of freely swinging left and right in the vehicle traveling direction, the vehicle cannot be stably driven at a low speed.

  The present invention automatically holds the vehicle vertically and locks the swing when the rear wheel portion connected to the front frame so as to be able to rotate about the vehicle traveling direction as an axis is pushed by a wedge-shaped member or a cam-shaped member. The main feature is the mechanism.

  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 an 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 swing arm and a rear wheel shock absorber 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. However, when the vehicle travels at a low speed, the occupant puts the front frame in a nearly vertical state, but it becomes difficult to ensure stability by front wheel steering. An actuator that operates below a certain speed is attached to the front frame, and a wedge-shaped guide pin is pushed into a guide plate that is integrally attached to the swing support member. Even when the vehicle is inclined, the wedge of the guide pin pushes the guide plate to force the vehicle to be held vertically.

FIG. 1 is a side view of an entire vehicle showing a method of implementing the present invention. Example 1 FIG. 2 is a side view of a guide pin portion showing a method of carrying out the present invention. Example 1 FIG. 3 is a cross-sectional view of the oscillating rotary shaft portion and guide pin of the present invention. Example 1 FIG. 4 is an explanatory view of the operation of the wedge-shaped guide pin and guide plate of the present invention. Example 1 FIG. 5 is an explanatory diagram of a state in which the vehicle is inclined according to the present invention. Example 1 FIG. 6 is an explanatory view of the operation of the cam type guide plate in the present invention. (Example 2)

  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 cylindrical part incorporating a bearing that is rotatably fitted to the swing rotation shaft of the front frame, a cylindrical part through which a swing arm pivot shaft that attaches a rear wheel swing arm passes left and right, and a sheet metal part that attaches a shock absorber 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 1 wheel and the rear 2 wheels swing according to the occupant's intention about the swinging rotation axis. A guide plate is integrally welded to the center of the upper body of the swing support member, an actuator is attached to the front frame, and a wedge-shaped guide pin is attached to the tip of the actuator. When the vehicle reaches a certain speed, the actuator presses the guide pin against the side surface of the guide plate, and the swing support member and the front frame are held in the same plane, that is, the vehicle is held vertically.

  FIG. 1 is a side view of an entire vehicle showing a method of implementing the present invention. 1. 3. In the lower rear of the front frame The swing rotation shaft is integrated by welding. 2. 2. rear wheel swing arm; The shock absorber is 5. It is attached to the swing support member so as to be rotatable with respect to the left and right axes. The swing support member is fitted to the swing rotation shaft of the front frame. FIG. 2 is a side view of an embodiment of the device of the present invention, and 1 to 5 are the same as those in FIG. In addition, 7. 5. A wedge-shaped guide pin was attached. 7. The actuator is fixed to the front frame. The guide plate is welded and integrated with the swing support member.

  FIG. 3 is a cross-sectional view of the swing rotation shaft portion, guide plate, and guide pin of the device of the present invention. When the guide pin is lowered forward, the guide plate can freely swing left and right. However, when the vehicle speed decreases and the guide pin is pushed backward by the actuator and inserted into the hole of the guide plate, the right and left side surfaces of the hole of the guide plate are pushed to the wedge-shaped slope, and the swing angle is limited. When the guide pin moves completely rearward, the hole of the guide plate and the wedge coincide, and the vehicle is held vertically.

  FIG. 4 is an explanatory view of the operation of the wedge-shaped guide pin and the guide plate according to the present invention as seen from above the swing shaft, and the upper side of the figure shows the vertical direction of the vehicle. FIG. 5 shows a state where the vehicle is inclined.

  The wedge-shaped guide pin is designed with a material such as nylon that has a low sliding resistance and a sufficient strength against wear, and can move the vehicle body with a small force. When the guide pin moves rearward, the tip of the guide pin is engaged with the hole of the support plate on the opposite side of the guide plate so as to maintain sufficient strength to keep the vehicle vertical.

  FIG. 6 is an explanatory view of the operation of the cam type guide plate in the present invention. In this case, if the vehicle is swung, The cam type guide plate is 9. When the cylindrical guide pin is pushed up and down and the actuator pushes down the guide pin, a force is applied to push the guide plate along the shape of the cam to make the vehicle vertical. The cylindrical guide pin is devised to use plastic for the contact portion and to make the shaft move smoothly by reducing resistance as much as possible through a bearing.

  This project can reduce the combined manufacturing cost by using existing parts. It is useful to provide a device in which personal transportation means protected from wind and rain can be used more safely.

DESCRIPTION OF SYMBOLS 1 Front frame 2 Rear wheel swing arm 3 Shock absorber 4 Oscillating rotating shaft 5 Oscillating support member 6 Actuator 7 Wedge-shaped guide pin 8 Guide plate 9 Cylindrical guide pin 10 Cam-shaped guide plate

Claims (1)

  In a three-wheeled motor vehicle having one front wheel and two left and right wheels driven by a rear wheel, a swing support member provided with a swing rotation shaft on a front frame in the vehicle traveling direction and attached with a rear wheel swing arm and a shock absorber A vehicle rocking lock device characterized in that the rocking vehicle is vertically held by operating a guide pin and a guide plate that are rotatably fitted and are respectively attached to a front frame and a rocking support member.

Images