JPS60234028A - Swing arm device for vehicles - Google Patents

Abstract

PURPOSE:To aim at simplification in manufacture and improvements in bending strength, by costituting a crass member, being set up in position between a symmetrical pair of swing arms and supporting a symmetrical pair of wheels at both outer sides, with a pipelike body on one side and a gear case on the other. CONSTITUTION:A symmetrical pair of wheels 3 are supported at both outer sides of a cross member 2 situated between tip ends of a symmetrical pair of swing arms 1. And, on the cross member 2, there is provided with a gear case 6 with a built-in gear mechanism 5 to connect the said each wheel 3 to a drive shaft 4. In the abovementioned, the cross member 2 is constituted of a pipelike body 2a on one side extending in a longitudinal direction and the gear case 6 on the other being tightly attached to the end part with a bolt 7 or the like. According to this method, manufacture of the cross member 2 is simplifiable as a whole, while it is able to be made up into such a relatively large one in bending strength.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a swing arm device that is applied to a pair of left and right wheels on the front side of a four-wheel drive vehicle mainly for off-road use.

Conventionally, as a device of this type, a pair of left and right swing arms are connected to each other via each steering knuckle holder and each steering knuckle on both outsides of a ps member between the ends of a pair of left and right swing arms.
A pair of wheels are supported and the one
A type equipped with a gear case having an internal gear mechanism that connects a pair of wheels to a drive shaft is known, but in this case, the gear case is interposed between the cross member and the cross member is connected to the gear case. , and two pipe-shaped halves that are connected to each other via bolts and other means and extend outward on both sides. This involves disadvantages such as requiring a lot of effort and making it difficult to obtain sufficient strength as a whole.

The object of the present invention is to obtain a device free from such inconveniences, and a pair of left and right wheels (3
) (3) and the drive shaft 7)(
4), which includes a gear case (6) having an internal gear mechanism (5) connected to the cross member (
2) with a pipe-shaped main body (2 &) on one side extending longitudinally;
The gear case (6) on the other side is connected to the end of the gear case (6) with a bolt (7) or the like.

The drawings show the case where the present invention is applied to the front swing arm device of a four-wheel drive vehicle for off-road use, and in this case, the vehicle has a cylinder as a whole as shown in FIGS. 1 and 2. Shape body frame (8) Collar 611), M
The frame (8) is equipped with an engine (9), a fuel tank Ql behind it, a seat housing for the passenger above it, and a steering handle in front of it. The pair of wheels (3) (31) are connected to both outer sides of the sliding member (2) at the tip of the swing arm (1) (1) via each steering knuckle holder αj and each steering knuckle α4. At the rear thereof, a pair of left and right wheels (IT) on both sides of the swing arms a909 and a cross member ae between the tips of the swing arms a909 and a pair of left and right wheels (IT) are provided with α force in substantially the same way, and the wheels ←η As for the shirt, the drive shaft 7) (IT9 was provided to provide drive to the shirt) Ql and the drive shaft 7) (41 were the engine (9)
) is connected to the engine (9) via a puller shaft extending in the longitudinal direction on the side surface of the engine (9).

The details of the pair of swing arms (1) (1) and the falling U-shaped member (2) between their tips are shown in FIGS. 3 and 4, for example.
As clearly shown in the drawing, the arm (1) on the left side in the drawing is curved forward and to the left and extends near the left end of the main body (2a), and the arm (1) on the right side in the drawing is The drive shaft (4) is tilted slightly to the left and extends forward in a substantially straight line to the vicinity of the left end of the gear case (6). The case (6
) is engaged with the input side of the gear mechanism (5), and
The gear mechanism (5) has an output shaft (21) extending outward on both sides.
n, and connected to the axles (3a) (3a) of the wheels (3) (3) on each side via each universal joint (24 (2). The upper and lower king pins that pivotally support the steering knuckle a4 are shown.

To explain its operation, when the vehicle is running, a pair of left and right wheels (3) (3) are connected to a pair of left and right swing arms (11
(1) moves up and down to follow unevenness on the road surface well, and can be driven freely via a drive shaft (4) and a gear mechanism (5) in a gear case (6), which is different from conventional models. Although there is no particular difference, during such operation, the cross member (2) between the tips of the pair of arms (1) (1)
is composed of two members: a longitudinally extending pipe-shaped main body (2a) on one side, and the gear case (6) connected to the end thereof, and a pair of left and right swing arms extend near both ends of the main body (2a). (1) Supported by (1), relatively high bending strength can be obtained.

In this way, according to the present invention, the cross member (2) between the tips of the pair of left and right swing arms (1) (1) is connected to the pipe-shaped main body (2a) on one side extending relatively longitudinally and the end thereof. The gear case (6) is connected to the gear case (6), which is made up of two parts.Compared to the five-member type, which is made up of an intermediate gear case and two halves extending to both sides of the intermediate gear case, it is easier to manufacture. It has the advantage of being simple and easy to use, as well as being able to obtain relatively high bending strength.

[Brief explanation of the drawing]

FIG. 11 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, FIG. FIG. (1) (1)...Swing arm (2)...Cross member (3) (3)...Wheel (4)...Drive shaft (5)...Gear mechanism (6)...・Gear case (2a)...Body (7)...Natsuto patent application/Person Honda Motor Co., Ltd. Figure 1 Figure 2] 2

Claims (1)

[Claims] A pair of left and right wheels (3) (
A gear case (5) supporting the gear case (3) and having an internal gear mechanism (5) on the ps member (2) for connecting the pair of wheels (3) to the drive shaft (4). 6
), the gear case has a pipe-shaped body (2 &) on one side that extends longitudinally, and the gear case on the other side that is connected to the end of the main body (2&) with a bolt (7) or the like. (6) A swing arm device for a vehicle comprising: