JPS59220472A - Under-guard device in motor tricycle - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a three-wheeled motor vehicle in which the axles of a pair of left and right rear wheels are used as drive shafts that block the engine, and are pivotally supported by a swing arm pivotally connected to a front body frame. Regarding an under guard device.

Originally, in this type of three-wheeled vehicle, if one of the rear wheels fell into a dent, etc., or if there was an obstacle such as a stone between the rear wheels, the parts and materials of the transmission system around the axle could be damaged by the ground or an obstacle. In this case, it may be possible to attach a guard plate located below these members to the body frame, but if the guard plate is simply attached to the body frame, the swing arm will not be able to swing. These members may hit the guard plate due to movement, or the guard plate may hit the ground or an obstacle when the vehicle body moves up and down, resulting in damage.

An object of the present invention is to provide a device that eliminates such inconvenience, and has a pair of left and right rear wheels (1) tl).
In a three-wheeled motor vehicle, the axle (2) is a drive shaft connected to the engine, and this is pivotally supported by a swing arm that is pivotally connected to the front frame (3) of the vehicle body.
) is provided with a projecting piece (9) projecting from the rear part of the rear cushion (II
It is characterized in that the lower end and the guard plate (6) that covers the lower surface of the member (5) around the ItE shaft 12+ are fixed.

The axle (2) shown in the figure has bearings (8) at both ends in a cylindrical shaft (7) attached to the rear end of a pair of left and right swing arms (41 (4)) as shown in Figure 4. The members (5) around the axle (2) include a chain (5 m) connected to the engine and a sprocket (
5b) and a brake (50). The swing arm (4) (41 is a rear cushion Q (I) which is connected to a protrusion (9) protruding from the rear end and provides relative vertical rocking as the vehicle body moves up and down. Then, a guard plate (6) was attached to this as described later.

The guard plate (6) includes wing parts (6m) (6b) bent downward on both sides of the fixed part (60) fixed to the projecting pieces (9) (9) of the arm (4) in the middle. , chain (5&) and sprocket (5&) on its negative side wing (6&).
b) and the brake (66) on the other side.
The plate (6) covers the swing arm (41(
41, and at its front end there are left and right swing arms (41 (4
) was screwed to the bracket (11) that spans the

Next, to explain its operation, the swing arm (4) (4) responds to the vertical movement of the vehicle body with relative vertical swing and movement.
The guard plate (6) attached to this is also held at a constant height, and it hits the ground as the vehicle moves up and down. Danger is prevented as much as possible, and even if the member (5) around the axle (2) moves up and down due to the swinging of the arm +41 (41), the guard plate (6) also moves up and down. 15116
10 Change direction almost the same as driving on two wheels by shifting the weight to one side of the step without causing any contact, tilting the vehicle body and turning the steering wheel so that one of the rear wheels (1) (1) rises from the road surface. Even at times, the guard plate (6) existing between the pair of rear wheels +13 flJ is further removed from the ground due to the inclination of the vehicle body, and does not obstruct the change of direction.

In this way, according to the present invention, the members (
5) Attach the guard plate (6) that covers the lower surface to the swing arm (4).
1, the guard plate (6) is prevented from coming into contact with the ground due to swinging of the arm (4), vertical movement of the vehicle body, or tilting of the vehicle body, and the members (5) around the axle are prevented from coming into contact with the ground. In addition to providing reliable protection, the guard plate (6) also protects the rear cushion a [as well as the protruding piece (9) that protrudes from the rear of the swing arm (4).
), it is easy to attach, and the attachment part can be made smaller and the unsprung weight can be reduced.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a three-wheeled motor vehicle equipped with the proposed device, Fig. 2 is a cross-sectional side view of its main parts, Fig. 3 is a rear view cut along the line ■-■ in Fig. 2, and Fig. 4 is a cross-sectional It is a partially cutaway rear view seen from the line ■-■ in the figure. (1)...Rear wheel (2)...Axle (3)...
・Vehicle frame (4)...Swing arm (5)・
・・Members around the axle (6) ・・2 people outside the guard plate

Claims (1)

[Claims] The axle (2) of the pair of left and right rear wheels (1) (1) serves as the drive shaft connected to the engine, and this is pivotally supported by a swing arm (4) that is pivotally connected to the front body frame (3). In a three-wheeled vehicle, a protrusion (9) is provided at the rear of the swing arm (4).
) is provided protrudingly, and the lower end of the rear cushion aQ and the train shaft (2) whose upper end is connected to the vehicle body frame via the protruding piece (9)
An anti-mite guard device for a three-wheeled motor vehicle, characterized in that a guard plate (6) covering the lower surface of a surrounding member (5) is fixed.