JP3103308U - Vehicle front wheel turning mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle front wheel turning mechanism that enhances stability at the time of curve of a vehicle and running safety.
A steering wheel shaft is pivotally mounted on a frame, and an upper end thereof is fixedly connected to a steering wheel or a steering wheel of a vehicle. A connecting seat is fixed to one side of the steering wheel shaft and rotates together therewith. The vertical shaft seat and the connection seat are connected by a connecting rod, and the vertical shaft seat rotates in the vertical direction about the pivot shaft of the vertical shaft seat and the suspension frame in conjunction with the movement of the connection seat. , An L-shaped horizontal shaft seat is pivoted on the vertical shaft seat, and is connected to the connecting seat by another connecting rod. With the design of the vertical shaft seat and the connecting rod, the driver turns the steering wheel to turn the front wheel. When rotated to the left and right, the front wheel tilts inside the curve direction and on the ground, causing an included angle smaller than 90 degrees, and Lower your heart.
[Selection diagram] FIG.

Description

  The present invention relates to a kind of vehicle front wheel turning mechanism, in particular, a vehicle front wheel turning method in which a steering wheel shaft is turned to rotate a front wheel in a left-right direction, and at the same time, an inclination angle is generated between the inside of the front wheel rotation direction and the ground. Regarding the mechanism.

  With the constant advancement and development of science and technology, various types of transportation tools have been constantly researched and developed, and not only their convenience but also their driving safety have been increased. The front-wheel turning mechanism (FIG. 1) of a traditional four-wheeled vehicle is composed of a steering wheel shaft A, a connecting seat B, a connecting rod C, and a movable rotating shaft D. The connection seat B is connected and fixed to the steering wheel shaft A, and rotates with the rotation of the steering wheel shaft A. A movable rotary shaft D having an L-shaped appearance is pivotally mounted on the front end of the frame E, and one end of the movable rotary shaft D Is connected to the front wheel F, the other end is connected to one end of the connecting rod C, and the other end of the connecting rod C is connected to the connecting sheet B. With this structure, when the driver turns the steering wheel (not shown) to rotate the steering wheel shaft A, the connecting sheet B on the steering wheel shaft A rotates integrally and the movable rotating shaft D is transmitted by the transmission of the connecting rod C. The objective of turning the front wheel F is achieved by the operation of turning right and left.

  Although the above-described structure reliably achieves the purpose of turning the front wheel F, it can only provide a plane turning function, and in fact, as a person having mechanical or physical common knowledge can understand, the vehicle turns while turning in the opposite direction. The centrifugal force is generated, and the magnitude of the centrifugal force is modified by the speed of the vehicle and the size of the curve radius. The smaller the curve radius and the higher the vehicle speed, the greater the generated centrifugal force. In addition, the centrifugal force that the vehicle receives when making a curve varies depending on the width of the chassis of the vehicle and the height of the center of gravity of the entire vehicle. For example, a commercial box-type vehicle is wider than the chassis width of a small vehicle and has a lower center of gravity. For this reason, when turning on a road with the same curvature, the speed of a commercial box-type vehicle must be lower than that of a small vehicle, or an overturning accident is likely to occur due to carelessness. This is what we usually get in the news that caused the overturning of a box-shaped vehicle to occur too fast. In addition to the traditional four-wheeled vehicles mentioned above, many special purpose vehicles have similar disadvantages. For example, an electric scooter (FIG. 2), which is currently accepted by physically handicapped persons, is easy to drive and get on and off because the distance between the left and right wheels is not large considering the convenience of riding alone, stopping and operating. As its seat position is quite high. For this reason, the position of the center of gravity cannot be lowered, and there is great doubt and disadvantages in the safety of operation of the electric scooter, and improvement is required.

  The present invention was made to remedy the above-mentioned disadvantages of known vehicles. A main object of the present invention is to provide a kind of vehicle front wheel turning mechanism. It is composed of a body frame, a steering wheel shaft, a connecting seat, a plurality of connecting rods, two suspension frames, two longitudinal shaft seats and two transverse shaft seats. The steering wheel shaft is pivotally mounted on the frame, and the upper end is fixedly connected to the steering wheel or the steering wheel of the vehicle. The connecting seat is fixed to one side of the steering wheel shaft and rotates therewith. One end of the suspension frame is connected to the frame. The vertical shaft seat and the connection seat are connected by a connecting rod, and the vertical shaft seat is rotated in the vertical direction around the pivot shaft of the vertical shaft seat and the suspension frame in conjunction with the movement of the connection seat; The lateral axle of the shape is pivoted on the longitudinal axle and is connected to the connecting seat by another connecting rod, and the driver of the vertical axle and connecting rod allows the driver to turn the steering wheel to turn the front wheels left and right. When rotated, the front wheel generates an inclination inside the curve direction and the ground, and an included angle smaller than 90 degrees is generated, resulting in the center of gravity of the entire wheel Lower.

  Another object of the present invention is to provide a kind of vehicle front wheel turning mechanism, which can increase the efficiency of curve, reduce the minimum turning radius and increase the maneuverability of operation.

The invention according to claim 1 is a vehicle front wheel turning mechanism including a body frame, a steering wheel shaft, a connection seat, two suspension frames, two vertical shaft seats, and two lateral shaft seats,
A shaft seat is provided on the frame, and a first pivot seat and a second pivot seat are respectively provided on the upper and lower sides of the left and right sides of the frame,
The steering wheel shaft is pivotally mounted in a shaft seat provided on a frame, and an upper end thereof is fixedly connected to a steering wheel or a steering wheel of a vehicle.
The connecting seat is fixed to one side of the steering wheel shaft and rotates therewith, and the connecting seat is provided with two lateral axial connecting rod fixing holes and two vertical axial connecting rod fixing holes,
One end of each of the two suspension frames is pivoted to a second pivot seat provided on the left and right below the frame, and a pivot seat is provided at an upper end of the suspension frame. The pivot seat is connected to one end of the suspension. The other end of the suspension is pivotally mounted on a first pivot seat provided above the frame, and the other end of the suspension frame is pivotally mounted on a vertical shaft seat,
The two vertical shaft seats are provided with a fixed seat at an upper end and connected to a connecting rod, and one end of the connecting rod is connected to a vertical shaft seat connecting rod fixing hole provided on a connecting sheet on the steering wheel shaft. As a result, the vertical shaft seat rotates vertically around the pivot shaft of the vertical shaft seat and the suspension frame as the connecting seat moves,
The two lateral shaft seats have an L-shape, and the lateral shaft seats are pivotally mounted on the vertical shaft seats and are rotatable left and right about the pivots, and are parallel to the suspension frame of the L-shaped transverse shaft seats. One end outside is connected to the front wheel, a fixing hole is provided at one end perpendicular to the suspension frame of the lateral shaft seat, and a connecting rod is fixed, and one end of this connecting rod is provided on a connecting seat on the steering wheel shaft. It is connected to the horizontal shaft connecting rod fixing hole, so that the horizontal shaft can be rotated left and right in the horizontal direction about the pivot between the horizontal shaft seat and the vertical shaft seat by moving the connecting sheet. Vehicle turning mechanism.
According to a second aspect of the present invention, there is provided a vehicle front wheel turning mechanism according to the first aspect, wherein universal joints are provided at both ends of the connecting rod.
According to a third aspect of the present invention, there is provided a vehicle front wheel turning mechanism according to the first aspect, wherein the suspension frame and the frame, the suspension frame and the vertical shaft seat, the vertical shaft seat and the horizontal shaft seat are mounted on a pivot shaft. , A vehicle front wheel turning mechanism.
According to a fourth aspect of the invention, there is provided a vehicle front wheel turning mechanism according to the third aspect, wherein the bearing is a dry-type bearing formed of polytetrafluoroethylene.

  The present invention has been designed in consideration of the fact that the centrifugal force generated in the opposite direction at the time of turning a vehicle may cause an accident of overturning the vehicle. During the race of each vehicle, the influence of centrifugal force on the vehicle is reduced by a variety of different methods, some are designed to incline the road surface, the surface of the race track is made higher on the outside than on the inside, and some is completely For example, in a bicycle or motorcycle race, the driver leans his body when turning at a high speed, thereby lowering the center of gravity of the vehicle. For a general user, the method of modifying the first type of road surface is not feasible. For this reason, the present invention was designed with reference to the second type.

  As can be seen from the above description, the present invention is based on the design of the vertical shaft seat and connecting parts such as connecting rod, so that the user turns the steering wheel to rotate the front wheel left and right through the horizontal shaft seat, Another connecting rod drives the vertical axle, causing the front wheel to generate an included angle of less than 90 degrees with the ground toward the inside in the direction of rotation, achieving the effect of lowering the overall center of gravity, In this case, the efficiency of the vehicle is increased, the radius of the curve is reduced, and the effect of the centrifugal force in the opposite direction when the vehicle curves is reduced on the stability of the vehicle, thereby improving the stability and safety of the vehicle.

  The vehicle front wheel turning mechanism of the present invention has a simple structure and features that are easy to repair, and the design of the vertical shaft seat and the connecting rod allows the user to turn the steering wheel to rotate the front wheel in the left and right direction at the same time. The front wheel generates an included angle of less than 90 degrees between the ground and the ground toward the inside in the direction of rotation, and the vehicle and the driver themselves are inclined at an appropriate angle in the direction of rotation due to the relationship of gravity. Reduce the effect of directional centrifugal force on vehicle stability and increase driving stability and safety.

  3 and 4 are a three-dimensional exploded view and a side view of the present invention. The vehicle front wheel turning mechanism of the present invention includes a vehicle body frame 1, a steering wheel shaft 2, a connection seat 3, a plurality of connecting rods 4, two suspension frames 5, two vertical shaft seats 6, and two lateral shaft seats 7. It is composed of The shaft seat 11 is provided on the frame 1, and a first pivot seat 12 and a second pivot seat 13 are provided on the left and right sides of the frame 1, respectively. The steering wheel shaft 2 is pivotally mounted in a shaft seat 11 provided on the frame 1, and an upper end thereof is fixedly connected to a steering wheel 14 or a steering wheel of the vehicle. In addition, the connecting seat 3 is fixed to one side of the steering wheel shaft 2 and rotates together therewith, and the connecting seat 3 is provided with two lateral shaft connecting connecting rod fixing holes 31 and two vertical axial seat connecting rod fixing holes 32. Is provided. One end of each of the two suspension frames 5 is pivotally mounted on a second pivot seat 13 provided on the left and right below the frame 1, and a pivot seat 51 is provided on an upper end of the suspension frame 5. The other end of the suspension 52 is pivotally connected to a first pivot seat 12 provided above the frame 1, and the other end of the suspension frame 5 is pivotally connected to a vertical shaft seat 6. A fixed seat 61 is provided at the upper end of the vertical shaft seat 6 and a connecting rod 4 is connected thereto. One end of the connecting rod 4 is fixed to a vertical shaft seat connecting rod provided on the connecting sheet 3 on the steering wheel shaft 2. The vertical shaft seat 6 is rotated in the vertical direction about the vertical shaft seat 6 and the pivot shaft 62 of the suspension frame 5 with the movement of the connection sheet 3. In addition, an L-shaped horizontal shaft seat 7 is pivotally mounted on the vertical shaft seat 6 and is rotatable left and right about a pivot 71. One end of the L-shaped horizontal shaft seat 7 parallel to the suspension frame 5 is provided. The outside is connected to the front wheel 8, a fixing hole 72 is provided at one end of the lateral shaft seat 7 perpendicular to the suspension frame 5, and the connecting rod 4 is fixed, and one end of the connecting rod 4 is connected to the steering wheel shaft 2. It is connected to the horizontal shaft connecting rod fixing hole 31 provided in the seat 3, whereby the horizontal shaft seat 7 is centered on the pivot 71 between the horizontal shaft seat 7 and the vertical shaft seat 6 by the movement of the connecting sheet 3. And can be rotated left and right in the horizontal direction.

  With the above-described structure, when the driver turns the steering wheel 14 clockwise and turns the steering wheel shaft 2 clockwise to shift the connecting seat 3 to the left, the driver is connected to the lateral shaft seat 7 on the connecting seat 3. The connecting rod 4 drives the left and right lateral shaft seats 7 to rotate clockwise, whereby the front wheels 8 on the left and right lateral shaft seats 7 rotate clockwise to achieve the purpose of turning (FIG. 5). On the other hand, at the same time as the horizontal shaft seat 7 of the present invention rotates, the connecting rod 4 connected to the vertical shaft seat 6 on the connecting sheet 3 also shifts to the left by the movement of the connecting sheet 3 (FIG. 6). As a result, the other end of the connecting rod 4 drives the vertical shaft seat 6 to rotate and tilt rightward (inward in the curve direction), whereby the front wheel 8 and the ground in the curve direction form an included angle smaller than 90 degrees. .

  In the structure of the present invention, universal joints 41 are provided at both ends of the connecting rod 4, and the connecting sheets 3, the fixing seats and the fixing holes are connected by the universal joints 41. In addition, bearings 53, 63, 73 are provided on pivotal shafts at respective pivotal positions such as the suspension frame 5 and the frame 1, the suspension frame 5 and the vertical shaft seat 6, and the vertical shaft seat 6 and the horizontal shaft seat 7. In addition, the installation of the bearings 53, 63, 73 further facilitates the pivotal rotation of the above-described structure, reduces wear between components, and increases its service life. The bearings 53, 63, 73 can be dry bearings made of polytetrafluoroethylene.

  The present invention can be applied to other four-wheeled vehicles in addition to front two-wheeled and single-wheeled three-wheeled vehicles.

It is a top view of a well-known turning mechanism. It is an external view of a well-known electric scooter. FIG. 2 is an exploded view of the present invention. It is a side view of the present invention. FIG. 3 is a plan view of the present invention. It is a front view of the present invention.

Explanation of reference numerals

Reference Signs List A Steering wheel shaft B Connecting seat C Connecting rod D Movable rotating shaft E Frame F Front wheel 1 Frame 11 Axle seat 12 First pivot seat 13 Second pivot seat 14 Steering wheel 2 Steering wheel shaft 3 Connection seat 31 Lateral shaft seat Connecting rod fixing hole 32 longitudinal shaft seat connecting rod fixing hole 4 connecting rod 41 universal joint 5 suspension frame 51 pivot seat 52 suspension 53 bearing 6 vertical shaft seat 61 fixing seat 62 pivot shaft 63 bearing 7 lateral shaft seat 71 Axis 72 Fixing hole 73 Bearing 8 Front wheel

Claims (4)

A vehicle front wheel turning mechanism comprising a body frame, a steering wheel shaft, a connection seat, two suspension frames, two vertical shaft seats, and two lateral shaft seats, wherein a shaft seat is provided on the frame, A first pivot seat and a second pivot seat are respectively provided on the upper and lower sides of the left and right sides of the frame,
The steering wheel shaft is pivotally mounted in a shaft seat provided on a frame, and an upper end thereof is fixedly connected to a steering wheel or a steering wheel of a vehicle.
The connecting seat is fixed to one side of the steering wheel shaft and rotates therewith, and the connecting seat is provided with two lateral axial connecting rod fixing holes and two vertical axial connecting rod fixing holes,
One end of each of the two suspension frames is pivoted to a second pivot seat provided on the left and right below the frame, and a pivot seat is provided at the upper end of the suspension frame. The pivot seat is connected to one end of the suspension. The other end of the suspension is pivotally mounted on a first pivot seat provided above the frame, and the other end of the suspension frame is pivotally mounted on a vertical shaft seat,
The two vertical shaft seats are provided with a fixed seat at an upper end and connected to a connecting rod, and one end of the connecting rod is connected to a vertical shaft seat connecting rod fixing hole provided on a connecting sheet on the steering wheel shaft. As a result, the vertical shaft seat rotates vertically around the pivot shaft of the vertical shaft seat and the suspension frame as the connecting seat moves,
The two lateral shaft seats have an L-shape, and the lateral shaft seats are pivotally mounted on the vertical shaft seats and are rotatable left and right about the pivots, and are parallel to the suspension frame of the L-shaped transverse shaft seats. One end outside is connected to the front wheel, a fixing hole is provided at one end perpendicular to the suspension frame of the lateral shaft seat, and a connecting rod is fixed, and one end of this connecting rod is provided on a connecting seat on the steering wheel shaft. It is connected to the horizontal shaft connecting rod fixing hole, so that the horizontal shaft seat can be rotated left and right around the pivot between the horizontal shaft seat and the vertical shaft seat by moving the connecting sheet. The vehicle front wheel turning mechanism.   The vehicle front wheel turning mechanism according to claim 1, wherein universal joints are provided at both ends of the connecting rod.   2. The vehicle front wheel turning mechanism according to claim 1, wherein a bearing is provided on a pivot shaft at a pivot position between the suspension frame and the frame, the suspension frame and the vertical shaft seat, and the vertical shaft seat and the horizontal shaft seat. The vehicle front wheel turning mechanism. 4. The vehicle front wheel turning mechanism according to claim 3, wherein the bearing is a dry type bearing made of polytetrafluoroethylene.

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