CN1286671C - Hookup - Google Patents

Abstract

The present invention relates to a hookup. A swing arm 44 is extended forward from the front vehicle body. A bolt 73 as a king pin inclined forward so that the upper end is positioned in front of the lower end is installed in a front part of this swing arm 44. A laterally extending cross beam 64 is turnably installed on this bolt 73. Front wheels 13 and 14 are rotatably installed on both ends of this cross beam 64. The invention can improve turning performance by inclining a front vehicle body in the turning direction according to steering handle operation when a vehicle turns, and moving the center of gravity of the vehicle in the turning direction, that is, the turning side side direction in a getting-on state of a driver.

Description

Suspension

technical field

The present invention relates to a suspension device suitable for improving the steering performance of a vehicle.

Background technique

A well-known vehicle includes a suspension device in which a front vehicle body and a rear vehicle body are rotatably connected, and two wheels capable of controlling directions are arranged on the left and right sides of the front vehicle body. This vehicle will be described with reference to FIGS. 9 and 10 .

Fig. 9 is the side view of the vehicle that possesses existing suspension device, and vehicle 100 is a kind of four-wheel vehicle, and this four-wheel vehicle is equipped with steering device 103 and front suspension device 104 at the front portion of vehicle frame 101, and steering device 103 Be connected to left and right 2 front wheels 105,105 (the front wheel 105 of inner side is not shown) one side, simultaneously, with front suspension device 104 suspension front wheels 105,105, by connecting device 106 power unit 107 and by this power Two left and right rear wheels 108 , 108 driven by the unit 107 are rotatably connected to the rear of the vehicle frame 101 .

10 is an exploded perspective view for explaining a conventional suspension device. The front suspension device 104 has the following structure: the front vehicle frame 113 is mounted on the front mounting parts 111, 111, 112, 112 provided at the front lower part of the vehicle frame 101. Above, the left and right swing arms 116, 116 are respectively swingably mounted on the arm mounting parts 114, 114 provided on the front frame 113, and each steering pin (king pin) 117, 117 (one steering pin 117 is not Shown.) Hinge 118,118 (a hinge 118 is not shown.) Can be installed in the front end of these swing arms 116,116 rotatably, the front wheel 105,105 that can rotate is installed on these hinges 118, front Both ends of the shock absorbers 121 and 121 are mounted on the front frame 113 and each swing arm 116 , respectively.

The problem to be solved by the invention

For example, when the vehicle 100 turns, the vehicle 100 tilts in a direction opposite to the turning direction due to centrifugal force. That is, the center of gravity of the vehicle body moves in a direction opposite to the steering direction. If the steering speed is increased, the vehicle body will be further tilted, so the vehicle must be driven at a reduced steering speed.

Since a motorcycle or a tricycle with one front wheel tilts the vehicle body in the direction of steering and moves the center of gravity of the vehicle body during steering, the influence of centrifugal force acting on the vehicle body can be reduced and steering can be performed smoothly .

Therefore, it is considered that even in the vehicle 100 described above, if the center of gravity of the vehicle body can be moved in the steering direction, the steering performance can be improved.

Contents of the invention

The object of the present invention is to improve the steering performance of the vehicle by improving the suspension device.

In order to achieve the above object, the present invention provides a suspension device, which is used for the following vehicle: a vehicle in which a front vehicle body and a rear vehicle body arranged behind it are rotatably connected, and front wheels are respectively arranged on the left and right sides of the front vehicle body. , the arm is extended forward from the front body, and the steering pin inclined forward is installed on the front part of the arm, so that the upper end is located in the front than the lower end, and the feature is: the beam extending left and right is rotatably installed on the steering pin A rotatable front wheel is installed at both ends of the beam to make the steering pin tilt forward; a handlebar rotatably installed on the front body is provided, and the handlebar is connected with the beam through a connecting part, so that the steering pin can be tilted forward. Manipulate the handlebars to steer.

Since the steering pin is tilted forward, when the vehicle is turning, the front body can be tilted in the steering direction as the handlebar is manipulated, and the center of gravity of the vehicle in the state where the driver is sitting on the vehicle can be turned in the steering direction, that is, Shifting sideways to the steering side improves steering performance.

Description of drawings

Fig. 1 is a side view of a vehicle provided with a suspension device according to the present invention.

Fig. 2 is a side view showing the structure of a vehicle body to which the suspension device of the present invention is mounted.

Fig. 3 is a perspective view of a vehicle body provided with the suspension device of the present invention.

Fig. 4 is an exploded perspective view illustrating a suspension device and a steering device of the present invention.

Fig. 5 is a side view for explaining main parts of the suspension device of the present invention.

Fig. 6 is a first working principle diagram for explaining the action of the suspension device of the present invention.

Fig. 7 is a second working principle diagram for explaining the action of the suspension device of the present invention.

Fig. 8 is a third working principle diagram for explaining the action of the suspension device of the present invention.

Fig. 9 is a side view of a vehicle equipped with a conventional suspension device.

Fig. 10 is an exploded perspective view for explaining a conventional suspension device.

Embodiment of the invention

Embodiments of the present invention will be described below with reference to the accompanying drawings. Also, assume that the view is looking in the direction of the symbol.

1 is a side view of a vehicle equipped with a suspension device of the present invention. A four-wheeled vehicle 10 is a vehicle: a bar handlebar 11 and front wheels 13, 14 controlled by the bar handlebar 11 (inner side) Front wheel 14 is not shown) is installed on the front car body 16, with the power unit 18 that is made up of engine and speed changer, the supporting arm portion 19 that supports this power unit 18 and the rear wheel 21,22 (inside) driven by power unit 18 The rear wheels 22 on the side (not shown) constitute a rear vehicle body 24, and the front vehicle body 16 and the rear vehicle body 24 are rotatably connected by a connecting device 26.

Here, 31 is a floor serving as a driver's footrest, 32 is a driver's seat, 33 is a windshield, 34 is a ceiling, and 35, 35 (rear symbols are not shown) are pillars supporting the ceiling 34. , 36 is a trunk, and 37 is a rear suspension unit that connects the power unit 18 of the rear vehicle body 24 and the support arm 19 .

Fig. 2 is a side view showing the structure of a vehicle body in which the suspension device of the present invention is installed, and the front vehicle body 16 is equipped with: a vehicle frame 41 that is substantially L-shaped in side view; , 14 (the front wheel 14 of the inner side is not shown) the steering device 42 that one side is configured; The suspension device 43 that is connected with the front lower part of vehicle frame 41.

The suspension device 43 includes: a swing arm 44 as an arm that is swingably mounted on the vehicle frame 41 and extends forward of the vehicle body; Suspension unit 45.

The connecting device 26 is composed of the following parts: a rotating shaft (not shown) extending along the front and rear direction of the vehicle body and installed on the vehicle frame 41; The casing 46 connected to the part 19; the elastic element (not shown) arranged between the rotating shaft and the casing 46 for making it function as a shock absorber when the rotating shaft and the casing 46 rotate relative to each other.

3 is a perspective view of a vehicle body equipped with a suspension device of the present invention, showing that an upstanding portion 51 is provided on the front portion of the vehicle frame 41, and a head pipe 52 is arranged on the upper end of the upstanding portion 51. On the head pipe 52 A handlebar shaft 55 rotatably constituting the steering device 42 is attached.

The handlebar shaft 55 is a member attached to the stem handlebar 11 (see FIG. 1 ).

The vehicle frame 41 is a member for attaching the connecting device 26 to the rear via a bracket 57 .

Fig. 4 is an exploded perspective view for explaining the suspension device and the steering device of the present invention. 61a, 61a are mounted on the connecting portion 55a, and one end of the second connecting rod 63 is installed on the other end of the first connecting rod 61 through the spherical hinge 62 in a rotatable and swingable manner, and is arranged in a swingable manner before connecting the left and right sides. The connection part 66a of the upper arm part 66 of the beam 64 of the wheel 13,14 is attached to the connection part 63a, 63a provided in the other end of this 2nd link 63. As shown in FIG.

The lever handlebar 11 (see FIG. 1 ), the handlebar shaft 55 , the first link 61 , the ball joint 62 , and the second link 63 are members constituting the steering device 42 .

In addition, the state shown in the figure is: the base portion 71 of the swing arm 44 is installed on the arm mounting portions 68, 68 of the vehicle frame 41, and the upper arm portion 66 and the lower arm portion 66 of the beam 64 are rotatably connected by the bolt 73 serving as a steering pin. The arm portion 74 is mounted on the bearing portion 72 provided at the front end of the swing arm 44, and the upper end of the front suspension unit 45 is mounted on the front end of the L-shaped arm 76 rising upward from the base portion 71 of the swing arm 44. The lower end of the suspension unit 45 is mounted on the lower portion of the upstanding portion 51 of the vehicle frame 41 .

Here, 77 is a nut screwed on the front end of the bolt 73, 78, 78 are axle supports attached to both ends of the beam 64, 81, 82 are axles of the front wheels 13, 14, respectively.

Like this, suspension device 43 is made up of following parts: swing arm 44; Front suspension unit 45; Bolt 73 and nut 77; Cross member 64 that upper arm portion 66 and lower arm portion 74 are installed; .

Fig. 5 is a side view for explaining main parts of the suspension device of the present invention, shown in partial section.

The suspension device 43 makes the bolt 73 connecting the swing arm 44 and the cross beam 64, which is used as a steering pin, tilt forward at an angle θ, so that the upper end is located in front of the car body compared with the lower end (the direction indicated by the hollow arrow (front) is the front of the vehicle body.).

That is, the bearing portion 72 is installed on the front end of the swing arm 44 at an angle θ relative to the vertical line 83 forward, and the pin through holes 84, 85 that are respectively opened on the upper arm portion 66 and the lower arm portion 74 of the beam 64 are connected to the bearings. The ends of the portion 72 overlap, and the bolt 73 passes through the pin through hole 84, the inside of the bearing portion 72 and the pin through hole 85 from the side of the pin through hole 84, and the nut 77 is screwed on the thread formed at the front end of the bolt 73.

The function of the above-mentioned suspension device 43 will be described below.

Fig. 6 (a), (b) is the 1st working principle diagram for explaining the effect of the suspension device of the present invention, shown in the figure is the top view of vehicle body.

(a) shows a state where the front wheels 13 and 14 are directed in the straight travel direction without turning the lever handlebar 11 left and right.

(b) represents that as shown by the arrow, to the right (the direction indicated by the hollow arrow (right) is the right.) Turn the lever handlebar 11 to turn the front wheels 13, 14 to the right, so that the vehicle is turned to the right state.

That is, when the lever handlebar 11 is turned to the right, the first link 61 rotates and swings as the handlebar shaft 55 rotates, and the second link 63 connected to the first link 61 through the ball joint 62 Move to the left (the direction indicated by the hollow arrow (left) is the left side.), the rear end of the upper arm portion 66 swings to the left, and the crossbeam 64 rotates to the right in a plan view, and the front wheels 13, 14 turn to the right.

7( a ) to ( c ) are the second working principle diagrams for explaining the function of the suspension device of the present invention, and the state of vehicle body inclination when the steering of the wheels is controlled is explained by the principle diagrams. (The shape of each member of the suspension device 43 is simplified for convenience.)

(a) is a side view of the swing arm 44 and the beam 64 corresponding to FIG. 5 , and on the right side of the side view is a side view of the end of the swing arm 44 .

First, when the stem handlebar is turned to the right, the beam 64 rotates around the steering pin 73 (that is, the bolt 73 ) as indicated by the arrow.

(b) shows the state in which the beam 64 rotates, that is, from the state of (a), the left axle 81 moves to the rear side of the paper, and the right axle 82 moves to the front side of the paper.

Although this state is due to the steering pin 73 tilting forward, the right axle 82 is higher than the left axle 81, that is, the right front wheel is higher than the left front wheel. Both front wheels are in contact with the ground at the same time, so in order to correct this state to the actual state, if the ground is 90, then when the height from the ground 90 to the front end of the left axle 81 is h, in order to make the right axle The height of the front end of 82 is the same as the height h of the front end of the axle shaft 81 on the left side, and the front end of the axle shaft 82 on the right side should be lowered by the distance d.

(c) shows a state where the right axle 82 is lowered and the axle 82 has the same height h as the left axle 81 . To lower the right axle 82, in (b), as shown by the arrow, the swing arm 44 is rotated relative to the horizontal shaft 91 extending in the front-rear direction of the vehicle body.

That is, returning to (c), the swing arm 44 is rotated about the horizontal axis 91 by an angle φ.

Fig. 8 is a third working principle diagram for explaining the function of the suspension device of the present invention, and the figure is a front view of a vehicle body.

As explained with FIG. 7( c), if the swing arm 44 rotates, then in FIG. The frame 41 rotates relative to the rear vehicle body 24 and is tilted only by an angle φ from the vertical line 83 to the right side of the vehicle body (the hollow arrow (right) in the figure indicates the right side of the vehicle body. That is, the steering direction of the vehicle here.).

In this way, when the vehicle frame 41 is tilted, the center of gravity 95 of the four-wheeled vehicle 10 (see FIG. 1 ) including the driver seated on the vehicle can be moved to the right side of the vehicle body.

As explained in Fig. 1 and Fig. 5 above, the present invention is a rotatably connected front body 16 and a rear body 24 arranged behind it, and front wheels are respectively arranged on the left and right sides of the front body 16. The four-wheel vehicle 10 of 13,14 is characterized in that: its structure is: extend swing arm 44 forward from front body 16, install the bolt 73 that tilts forward as steering pin at the front portion of this swing arm 44, make the upper end Compared with the lower end, the upper end is located in the front, and the beam 64 extending left and right is rotatably mounted on the bolt 73, and the front wheels 13, 14 are rotatable at both ends of the beam 64, and the bolt 73 is tilted forward. .

Since the steering pin 73 is tilted forward, when the four-wheeled vehicle 10 is turning, the front body 16 can be turned to the steering direction, that is, to the side of the steering side (for example, in FIG. The right side of the vehicle body) is tilted, and the center of gravity 95 of the four-wheeled vehicle 10 in the state where the driver is sitting on the car can be turned to the steering direction, that is, to the side of the steering side (for example, the right side of the vehicle body in Fig. 8 ). Side) movement can improve steering performance.

Therefore, the steering speed can be increased, and the center of gravity 95 is lowered due to the movement of the center of gravity 95 of the four-wheeled vehicle 10, and the moment of turning the four-wheeled vehicle 10 due to the centrifugal force acting on the center of gravity 95 can be reduced. As a result, the track (interval between the left and right wheels) of the front wheels 13, 14 and the rear wheels 21, 22 (see FIG. 6(a)) can be reduced, the vehicle width can be reduced, and the four-wheeled vehicle 10 can be miniaturized. .

And although the present invention is to be able to connect the front body and the rear body of the vehicle in a rotatable manner, and to set the front wheels as two wheels and the rear wheels as two wheels, it is not limited thereto, it can also be connected to the front body in a non-rotatable manner. body and rear body and the front wheels are 2 wheels, and the rear wheels are a tricycle with 1 wheel.

The effect of the invention

The present invention has the following effects due to the above structure.

In the suspension device of the present invention, since the arm is extended forward from the front vehicle body, a steering pin tilted forward is installed on the front portion of the arm so that the upper end is located in front of the upper end compared with the lower end, and a rotatable steering pin is installed on the steering pin. The crossbeam extending left and right is equipped with rotatable front wheels at both ends of the crossbeam. Therefore, when the vehicle is turning, the front body can be tilted in the direction of steering as the handlebars are manipulated, enabling the driver to sit on the vehicle. The center of gravity of the lowered vehicle is shifted in the steering direction, that is, to the side on the steering side, and the steering performance can be improved.

Claims (1)

1. suspension gear, can connect front vehicle body freely rotationally and be arranged on the aftercarriage at its rear, about front vehicle body, be provided with respectively in the vehicle of front-wheel, from front vehicle body extension arm forwards, the king pin that turns forward is installed in front portion at this arm, top and bottom are compared, and the upper end is positioned at the place ahead, it is characterized in that: the crossbeam that will extend to the left and right is installed on this king pin revolvably, at the two ends of this crossbeam revolvable described front-wheel is installed, king pin is turned forward; Be provided with the handlebar that is installed in rotation on the front vehicle body, this handlebar links by linking parts and this crossbeam, turns to thereby can handle handlebar.

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