KR20070103281A - Apparatus for shifting the center of gravity of a vehicle having three wheels or more - Google Patents

Abstract

An apparatus for shifting the center of gravity of a vehicle having three wheels or more is provided to allow the center of gravity to be easily and finely shifted and returned, and to finely control right and left shaking of the vehicle. An apparatus for shifting the center of gravity of a vehicle having three wheels or more comprises a movable frame(10) and a controller for shifting the center of gravity. The movable frame has one side flexibly fixed to a vehicle body, and all or a part of the movable frame is fixed to be movable right and left in a driving direction of the vehicle body. The controller includes a ball screw device(60) consisting of a ball screw and a ball nut, and wires(20a,20b) having one side connected to the ball nut and the other side connected to an upper part of the frame that is approximately symmetrical with respect to the driving direction of the vehicle body.

Description

Center of gravity shifter applied to three-wheeled vehicles {APPARATUS FOR SHIFTING THE CENTER OF GRAVITY OF A VEHICLE HAVING THREE WHEELS OR MORE}

1 is a perspective view of main parts of a center of gravity moving device according to a preferred embodiment of the present invention;

2 and 3 are front views of the center of gravity moving device shown in FIG. 1, FIG. 2 is a view showing the state of the center of gravity moving device when driving in a straight line, and FIG. drawing;

Figure 4 is a perspective view of the main portion of the center of gravity movement control in the center of gravity moving apparatus shown in Figures 1 to 3;

5 is a partial cross-sectional view of the main portion of the center of gravity movement control in the center of gravity movement apparatus shown in FIGS.

6 is a view showing a state of the frame when driving straight;

7 is a view showing a state of movement of the frame during the curve running;

Figure 8 is a perspective view of the main portion of the center of gravity moving device according to another preferred embodiment of the present invention;

Figure 9 is a perspective view of the main portion of the center of gravity moving device according to another preferred embodiment of the present invention; And

10 to 12 are views illustrating various vehicle models to which the center of gravity moving apparatus according to the present invention may be applied. FIG. 10 is a view showing a reverse three-wheeled vehicle, and FIG. 12 is a view showing a vehicle in the form of a rhombus.

<Explanation of symbols for main parts of the drawings>

1: center of gravity moving device 10: flowable frame

20: wire (20a, 20b wire shown on the left and right, respectively)

30: bending wheels or rails 50, 52, 54: elastic support member

60: ball screw device 62: ball screw

64: ball nut M: electric motor

S: Switch E.C.U. : Electronic Control Unit

The present invention relates to the field of three wheels or more, and more particularly, to three wheels that must move the center of gravity in the left and right directions with respect to the direction of their driving in order to ensure its stability and safety when driving the vehicle, especially in curve driving. Or it relates to a center of gravity transfer device applied to more cars.

A three-wheeled vehicle is a vehicle with two wheels in front of the driver and one wheel in the rear (commonly called a reverse three-wheeled vehicle) or two wheels in the rear of the driver. It refers to a car (usually called a three-wheeled vehicle) with one wheel in front.

In order to ensure the stability and safety in the straight and curved driving in such a three-wheeled vehicle, the vehicle width in the vehicle portion in which two wheels are mounted side by side is larger than that of a conventional four-wheeled vehicle or as opposed to centrifugal force like a motorcycle. Some or all of the center of gravity of the centripetal force should be moved instantaneously. In the case of the former, the size of the vehicle is increased due to the increase in the width of the vehicle, and in the latter case, the stability and safety of the instantaneous center of gravity movement are problematic. For that reason, the development of three-wheeled vehicles has been made in the direction of eliminating the former and solving the latter problem.

Recently, more specifically, at the 1997 Frankfurt Motor Show, German Mercedes-Benz announced a new concept reverse tricycle named 'F300 Life-jet', which received global attention. However, such a reverse three-wheeled vehicle is designed to tilt the body and all the wheels in the direction of the driver's operation when moving the center of gravity, not only takes more power than necessary, but also takes the power required for the center of gravity movement itself. In addition, such a reverse three-wheeled vehicle still suffers from a shake when returning to the home position after the center of gravity movement and stopping and when boarding.

More recently, at the Tokyo Motor Show in Japan, the company 'Phiaro' announced a three-wheeled vehicle under the name of 'P67b ETERNITY', which has received global attention again. However, such a three-wheeled vehicle has a center point of the center of gravity moving arc located above the ground, so that the wheels are pushed to the side when moving the center of gravity, and the tire on the one side will be badly worn. This is even more the case when the car is running on a curve. In addition, such a vehicle is designed such that the center of gravity of the engine mounted on the rear wheel, which occupies the largest weight in the vehicle body, is not moved, so that the vehicle may be more dangerous than the reverse three-wheeled vehicle as described above.

The present invention has been made to solve some of the problems of the prior art as described above, an object of the present invention is to drive the three-wheel or more in the vehicle that requires the movement of the center of gravity in the left and right direction with respect to the driving direction of the car According to the demand, the center of gravity can be moved and returned more easily, efficiently and precisely, and the center of gravity moving device is applied to three or more wheels that can precisely control the left and right shakes even when the center of gravity is stopped. There is.

In order to achieve the above object, the present invention is a center of gravity moving device that is applied to three or more cars,

(a) One side is fixed to the body so as to be flowable, some or all of which is fixed to be movable left and right with respect to the direction of travel of the body, for example, inverted trapezoid, square trapezoid, square, rectangular, Flowable frames of equilateral or inverted triangle shapes; And

(b) a center of gravity movement control for moving the center of gravity of the vehicle body on demand by adjusting the left and right movement of the frame, comprising: (i) a ball screw device consisting of a ball screw and a ball nut, and (ii) one side of each Provided is a center of gravity shifting device including a center of gravity movement control unit which is connected to the ball nut and each other side is connected to the upper portion of the frame is generally symmetrical with respect to the direction of travel of the vehicle body.

In the center of gravity moving device according to the preferred embodiment of the present invention, one or more elastic support members are coupled between the left and right sides of the frame and the lower portion of the vehicle body. Such an elastic support member may include an elastic support member in the form of a general compression spring having the same tensile force, an elastic support member having a different length of wire as a combination of a wire and a compression spring, or a size of the piston as a combination of a piston and a compression spring. Alternatively, an elastic support member having a different length may be selected. The elastic support member moves the center of gravity during the curved driving of the car, and serves to keep the frame deflected to one side as it is with minimal power. On the contrary, the elastic support member serves to enable the frame deflected to one side to easily return to its original position with minimal power when switching from the curved driving of the car to the linear driving.

In the ball screw device, the shuttle motion of the ball nut relative to the ball screw is made by an electric motor or a hydraulically actuated device.

The electric motor or hydraulically actuated device is powered by a power switch.

The power switch is preferably arranged at a position where the steering wheel of the vehicle or the driver's hand or foot can touch each other or together.

The power switch may be configured according to the combination of the centrifugal force according to the rotation angle of the steering wheel of the vehicle and the weight of the vehicle, the weight of the driver, or the combined weight thereof. (Electronic Control Unit) Automatically controlled by the device.

According to a preferred embodiment of the present invention, an anti-bending wheel or rail is disposed on an upper portion of the ball nut, and the anti-bending wheel or rail is fixed directly or indirectly to a vehicle body under the ball nut.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings. The accompanying drawings are one of the embodiments of the present invention, and the present invention is not limited to the accompanying drawings and descriptions thereof, and various modifications may be made within the scope of the present invention by those skilled in the art.

1 to 3 schematically show the main parts of the center of gravity moving device (hereinafter referred to as "weight center moving device") applied to three or more cars according to a preferred embodiment of the present invention, Figures 4 and 5 The center of gravity movement control unit in the center of gravity moving device according to the preferred embodiment of the present invention is shown, Figure 6 and Figure 7 shows the operation of the center of gravity moving device according to the preferred embodiment of the present invention.

Referring to these drawings, the center of gravity moving device 1 according to the preferred embodiment of the present invention controls the center of gravity of the vehicle body by adjusting the left and right movement of the frame 10 and the frame 10 of a predetermined shape according to the request. It includes a center of gravity movement control for moving in the direction.

As shown in FIG. 1, the flowable frame 10 is fixed to one side of the vehicle body so as to be movable, and a portion thereof is fixed to the left and right directions with respect to the driving direction of the vehicle body. In the present embodiment, the flowable frame 10 is shown in an inverted trapezoidal shape, although other shapes may be possible, including tetragonal, square, rectangular, equilateral, and inverted triangle shapes. In particular, the inverted trapezoidal frame 10 can be left and right of the frame 10 with less force, thereby improving the controllability of the car.

The center of gravity movement control unit includes each of the wires 20a and 20b directly driven by the ball screw device 60 and the ball screw device 60 as shown. By the primary operation of the wires 20a and 20b by the ball screw device 60, the above-mentioned fluid frame 10 is moved in the required direction. The ball screw device 60 is comprised of the ball screw 62 and the ball nut 64, the ball screw 62 is rotatably fixed to the vehicle body, and the ball nut 64 with respect to the ball screw 62. Combined for linear reciprocation. One side of each of the wires 20a and 20b is connected to the ball nut 64 as shown, and the other side of the wires 20a and 20b is generally connected to the upper part of the frame 10 with respect to the driving direction of the vehicle body. .

The ball screw device 60 is provided with a bearing between the inside of the ball nut 64 side and the ball screw 62 to enable precise operation of the ball nut 64. In addition, such a ball screw device 60 allows the left and right shake of the car to be suppressed not only when the vehicle is stopped but also while driving.

This rotational operation of the ball screw 62 in the center of gravity movement control unit is made by the electric motor M, which is operated by the application of power by the power switch S. In this embodiment, the ball screw device 60 is operated by the electric motor (M), but those skilled in the art will appreciate that the ball screw device 60 can be operated by a hydraulically operated device. will be. The power switch S is preferably disposed at a position where the steering wheel of the vehicle, or the driver's hand or foot, respectively, or together can be touched. The power switch S is automatically controlled by the E.C.U. (Electronic Control Unit) according to the combination of the rotation angle of the steering wheel of the car and the centrifugal force according to the weight of the vehicle, the weight of the driver or the combined weight thereof.

An anti-bending wheel or rail is disposed above the ball nut 64 so that the ball screw device 60 is not bent, and the anti-bending wheel or rail is fixed directly or indirectly to the vehicle body under the ball nut 64.

Moreover, the center of gravity moving control unit of the center of gravity moving device 1 according to the present invention includes an elastic support member in addition to the above components. In this embodiment, the compression spring 50 is used as the elastic support member. These springs 50 are coupled between the left side of the frame 10 and the bottom of the body belonging to the left side of the frame 10 and between the right side of the frame 10 and the bottom of the body belonging to the right side of the frame 10. .

The spring 50 supports the opposite side of the frame 10 even if the frame 10 moves its center of gravity in a specific direction so that the center of gravity is moved to the desired degree, and when there is no demand for the movement of the center of gravity, the body is returned to its original state. Makes it easy to return. This spring 50 is coupled between the left side of the frame 10 and the lower part of the body belonging to the left side of the frame 10 and between the right side of the frame 10 and the lower part of the body belonging to the right side of the frame 10. . In this case, it is preferable that a plurality of springs 50 having the same tensile strength be installed as shown. Increasing the number of springs 50 that will be installed will further ensure stability while driving the car. In the present embodiment, a plurality of springs 50 having the same tensile strength are used, but the springs 50 having a structure in which the vehicle body has a different tensile strength or a different tensile strength on each of the left and right sides of the frame are sequentially It may be installed. At this time, it is easy to control that each spring 50 applied to the left side and the right side of the frame 50 has the same tensile strength. The reason for changing the tensile strength of the spring 50 on each side is to allow the force applied to the spring to be applied sequentially, and even if the spring to which the force is applied first is broken, there are still springs applied second and third. This will make driving safer.

In the center of gravity moving device 1 according to the preferred embodiment of the present invention, the ball screw 62 rotates together by the rotation of the electric motor M, and the ball nut 64 is rotated according to the rotation of the ball screw 62. ) Will move linearly in a specific direction. At this time, when the ball nut 64 is moved to the right (left side from the driver's position) in the direction of the arrow by the rotation of the ball screw 62, the wire shown by reference numeral 20a becomes taut and the wire 20a Pulling the upper portion of the frame 10 connected thereto, on the contrary, the wire shown by reference numeral 20b is loosened so that no more attractive force can be exerted on the upper portion of the frame 10 to which the wire 20b is connected. On the other hand, the spring shown by 50b pulls the frame 10 of the side to which the wire 20b is coupled so that the frame 10 moves its center in the right direction as shown in FIG. 2B. At this time, the frame 10 is supported by a spring 50a provided on the opposite side of the spring shown by reference numeral 50b.

8 shows a center of gravity moving device 1 according to another preferred embodiment of the present invention. The center of gravity moving device 1 shown in FIG. 8 is the same as the center of gravity moving device 1 shown in FIG. 1 except that the elastic support member is made of a combination of a wire and a compression spring.

Referring to Figure 8, the elastic support members 52a, 52b, 52c used in the center of gravity moving device 1 according to another preferred embodiment of the present invention is the wire (upper) and the compression spring (lower) of the It is composed of a combination. The compression springs used in the elastic support members 52a, 52b, 52c are the same, but the lengths of the wires are different. The different lengths of the wires allow the elastic support members 52a, 52b, 52c, which are located opposite to each other, to move in sequence in the specific direction. In this case, the elastic support member shown by reference numeral 52a acts first, and then the elastic support member 52b adopting the loose wire acts, and finally the elastic support member 52c adopting the looser wire is applied. Will work. The number of elastic support members 52a, 52b, 52c depends on the choice of those skilled in the art in consideration of the weight of the vehicle body and the like.

9 shows a center of gravity movement device 1 according to another preferred embodiment of the present invention. The center of gravity moving device 1 shown in FIG. 9 is the same as the center of gravity moving device 1 shown in FIG. 1 except that the elastic support member is composed of a combination of a piston and a compression spring.

9, the elastic support members 54a, 54b, 54c used in the center of gravity moving apparatus 1 according to another preferred embodiment of the present invention are a piston (upper side) and a compression spring (lower side). It consists of a combination. The piston and the compression spring used in the elastic support members 54a, 54b, 54c are mutually adopted in inverse proportion to each other. The different size or size of the piston allows the resilient support members 54a, 54b and 54c, which are located opposite the frame 10 to be moved in a particular direction, to act sequentially. In this case, the elastic support member shown by reference numeral 54a acts first, followed by the elastic support member 54b employing a larger or longer piston, and finally a larger or longer piston. The elastic support member 52c adopted acts. The number of these elastic support members 54a, 54b, 54c depends on the choice of those skilled in the art in consideration of the weight of the vehicle body and the like.

10 to 12 illustrate various vehicle types to which the center of gravity moving device according to the present invention can be applied. That is, FIG. 10 is a reverse three-wheeled vehicle, FIG. 11 is a forward three-wheeled vehicle, and FIG. 12 is a rhombus-shaped vehicle. The commonalities of these cars are those that ensure the safety of the vehicle as well as the driver only when the center of gravity of the vehicle is moved by the driver's driving operation.

Although the above has been described with reference to a preferred embodiment of the present invention, those skilled in the art can variously modify and change the present invention without departing from the spirit and scope of the present invention described in the claims below. It will be appreciated.

As described above, the center-of-gravity moving device applied to the three-wheel or more vehicle according to the present invention in accordance with the request of the three-wheel or more vehicle that requires the movement of the center of gravity in the left and right directions with respect to the driving direction of the car It is possible to move and return the center of gravity more easily, efficiently and precisely, and also to precisely control the left and right shakes at the time of its stop.

Claims (10)

It is a center of gravity shifter that is applied to three or more cars. (a) a fluid frame 10 having a predetermined shape in which one side is fixed to the vehicle body so as to be movable, and some or all of them are fixed to be movable left and right with respect to the driving direction of the vehicle body; And (b) a center of gravity movement control unit for moving the center of gravity of the vehicle body on demand by adjusting the left and right movement of the frame 10, (i) a ball screw device consisting of a ball screw 62 and a ball nut 64 (60) and (ii) each wire 20a is connected to an upper portion of the frame 10, one side of which is connected to the ball nut 64 and the other side of which is generally symmetrical with respect to the driving direction of the vehicle body. A center of gravity shifting device comprising a center of gravity shifting control unit comprising a) 20b. The apparatus of claim 1, wherein an elastic support member is coupled between the left and right sides of the frame and the lower portion of the vehicle body. 3. The apparatus of claim 2, wherein each said elastic support member is a compression spring (50) of approximately equal tensile strength. 3. The size or length of the piston of claim 2, wherein each of the elastic support members is a combination of wires and compression springs, and the elastic support members 52 of different lengths of wires, or a combination of pistons and compression springs. Is the center of gravity moving device, characterized in that the other type of elastic support member (54). 5. The center of gravity movement according to claim 1, wherein the shuttle movement of the ball nut 64 with respect to the ball screw 62 is made by an electric motor or a hydraulically actuated device. 6. Device. 6. The device of claim 5, wherein the electric motor or the hydraulically actuated device is driven by a power switch. 7. The center of gravity moving device according to claim 6, wherein the power switch is disposed at each of left and right sides or together with the handle of the vehicle or the position where the driver's hand or foot can touch. The method of claim 6, wherein the power switch is E.C.U. according to the combination of the rotation angle of the steering wheel of the car and the centrifugal force according to the weight of the vehicle, the weight of the driver or the combined weight thereof. (Electronic Control Unit) Center of gravity moving device characterized in that the automatic control. The shape of the frame (10) according to any one of claims 1 to 4, characterized in that the shape of the frame 10 is selected from the group consisting of inverted trapezoid, square trapezoid, square, rectangular, equilateral triangle and inverted triangle. Center of gravity shifter. The method of any one of claims 1 to 4, wherein the anti-bending wheel or rail 30 is disposed on the ball nut 64, the anti-bending wheel or rail 30 is the ball nut 64 The center of gravity moving device, characterized in that fixed directly or indirectly to the lower body.

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