JPS60234029A - Swing unit device for vehicles - Google Patents

Abstract

PURPOSE:To make a minimum road clearance securable in an easy manner, by setting up an egine and an output shaft sidewise in parallel on a body frame, while tilting a propeller shaft ranging from the output shaft inward toward its tip end. CONSTITUTION:In a position of at least one side of the front and rear of a body frame 3 having an engine 1 and an output shaft 2 ranging from it, there is provided with a swing unit 6 consisting of a symmetrical pair of swing arms 4 and a cross member situated in position between tip ends of the arm 4. And, a symmetrical pair of wheels 7 are attached to both outer sides of the said unit 6 via a knuckle 8, while a propeller shaft 9 ranging from the output shaft 2 is connected to each wheel 7 via a gear machanism 11. In this case, the output shaft 2 is set up along a sidewise lateral face of the engine 1 at one side in a cross direction of the body frame 3, while the propeller shaft 9 is installed after being tilted inward toward the tip end side.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a swing unit device mainly applied to a four-wheel drive vehicle for off-road use.

Conventionally, this type of device includes a pair of left and right swing arms, and a p-slide member between the tips of the swing arms, at least one of the front and rear sides, for example, the front part, of a vehicle body frame that has an engine and an output shaft connected thereto in the front and rear directions. A swing unit consisting of a swing unit is provided with a pair of left and right wheels on both outer sides of the swing unit, which can be steered freely via each knuckle, and a propeller shaft connected to the output shaft is extended onto the unit and is mounted on the cross member. There are known types of wheels that are connected to the pair of wheels via a differential gear or other gear mechanism in a gear case formed in
In this case, the output shaft is disposed on the lateral side of the vehicle body frame along the lateral side of the engine, and the engine and the output shaft are placed in a left-right relationship with each other. It is conceivable that the height above the ground can be secured more easily than in the case of a vertical arrangement.

However, in such a device, the output shaft is largely deviated to one side with respect to the central axis of the frame in the front-rear direction, and thus the output shaft connected to the output shaft is largely deviated to one side with respect to the longitudinal center axis of the frame. −／−? If 7) is extended as it is on the swing unit, the shaft will be in a positional relationship more or less close to the wheels on its side, and there will be an inconvenience that it will tend to interfere with the wheels when steering the wheels. To explain this further, in the case of this type of vehicle, the wheel pace, that is, the distance between the two wheels, is relatively small, and each wheel is generally relatively wide, for example in the shape of a balloon tire. Therefore, the above-mentioned disadvantages are likely to occur.

The purpose of the present invention is to obtain a device that does not have such inconveniences, and the present invention aims to provide a device that does not cause such inconvenience. A pair of left and right swing arms (4) on at least one side (
A swing unit (6) is provided, consisting of a swing unit (4) and a p-smember (5) between its tips, and a pair of left and right wheels (7) are mounted on both sides of the swing unit (7) through each knuckle (8) (8). At the same time, a propeller shaft (9) connected to the output shaft (2) is extended on the unit (6) and connected to a gear case (I) formed on the cross member (5).
The output shaft (2) is connected to the lateral side of the vehicle body frame (3) through a differential gear or other gear mechanism aυ in the vehicle body frame (3). It is arranged along the lateral side of the engine (1), and the propeller shaft (9) is inclined inward toward its tip end.

The drawings show a case in which the vehicle is applied to the front wheel side of a four-wheel drive vehicle for off-road use.
As clearly shown in the figure, the vehicle body frame (3) as a whole
the engine (1) on the frame (3);
The model is equipped with a fuel tank (L side) behind it, a passenger seat 0 above it, and a steering handle α fathom in front of it. A swing unit α consisting of a pair of swing arms a!9α [with] and a cross member (le) between the tips thereof is provided at the rear of the wheel (71(7)).
A pair of left and right wheels α1 (II) are connected via D, and the wheels (
ll(l) was connected to and driven by a puller shaft 4 extending rearward from the output shaft (2).

The relationship between the engine (1) and the output shaft (2) is, for example, as clearly shown in FIG. The output shaft (2) is provided approximately at the top, and the output shaft (2) is offset to the left side in the drawing. Further, the details of the swing unit (6) are clearly shown in the drawing, and one of the pair of swing arms (4) (4), that is, the arm (4) on the left side in the drawing, is described as a whole. It is formed into a substantially straight shape and the propeller shaft 7) (9) is inserted therethrough;
The shaft (9) and the arm (4) are inclined inwardly, that is, to the right when facing forward in the drawing. Furthermore, as shown in the figure, the four-seater member (5) is of a type in which the left end in the drawing is constituted by the gear case 4, and the internal gear mechanism aυ is formed by the gear (5) at the tip of the propeller shaft (9). The ring gear on the input side (11m) that engages with the
) is configured as a differential gear mechanism. The drawing shows a pair of output shafts extending outside the cap on both sides, and the output shafts @JG! Q is each adjustable joint Q as shown in Figure 4.
It was connected to the axle (7a) of each wheel (7) via υ, and each knuckle (8) was pivotally supported on each knuckle holder (8a) via each king pin (8b). . In the drawing, (24) indicates a universal joint that interconnects the output shaft (2) and the propeller shaft (9).

To explain its operation, when the vehicle is running, the left and right wheels (7) (the force is allowed to move up and down in the swing unit (6), so that it can follow the unevenness of the road surface well, and both wheels (7) (The force is on each knuckle (8) (8) Ic
It can be steered freely, and the propeller shaft 7) (9)
The output of the engine (1) is guided through the gear mechanism aυ to drive the engine (1), and this point is not particularly different from the conventional one, but during such operation, the engine (1) and its output shaft (2) and the shaft (7H9) extending from the output shaft (2) onto the unit (6) can be arranged horizontally to ensure the minimum ground height. It is tilted towards the outside, so that it does not interfere with the steering of its outer wheels (7).

As described above, according to the present invention, the engine (1) and the output shaft (2) are arranged side by side on the main body frame (3), making it easy to ensure the minimum ground height.

In addition, the propeller shaft 7 connected to the output shaft (2)
) (9) is inclined inward toward its tip, which can eliminate interference with the outer wheel (7),
In particular, it has the advantage that there is no need to increase the wheelbase.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an example of a vehicle equipped with the device of the present invention, FIG. 2 is a partially removed perspective view, and FIG. 3 is an enlarged plan view with some of its essential parts removed. FIG. 4 is a cross-sectional view taken along line IV-■. (1) Engine (2) Output shaft (3) Vehicle frame (4X4) Swing arm (51.
... Riha Sumember (6) ... Swing unit (7
X71...Wheel (8X8)...Knuckle (9)
・・Purpera shaft αG・Gear nurse αυ・・
・Gear mechanism 1st ml Fig. 2 1st ml

Claims (1)

[Claims] Engine (1) and the output shaft (2) in the longitudinal direction connected to it
A swing unit (6) consisting of a pair of left and right swing arms (4) and a sliding member (5) between the tips thereof is provided on at least one of the front and rear sides of the vehicle body frame (3) having A pair of left and right wheels (71 (7)
) is provided so as to be freely steerable via each knuckle (8) (8), and a propeller shaft 7) (9) connected to the output shaft (2) is extended on the unit (6) to allow the propeller shaft to be steered freely. The pair of wheels (7) (7) is connected to the pair of wheels (7) via a differential gear and other gear mechanisms aυ in the gear case frame formed on the Rita member (5).
The output shaft (2) is arranged along the lateral side of the engine (1) on the lateral side of the vehicle body frame (3), and the propeller shaft (7) (9) is connected to the engine (1).
A swing unit device for a vehicle, comprising a swing unit 1 inclined inward toward its distal end side.