JPH0139604Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention mainly relates to a support device applied to the rear wheel axle of a three-wheeled motor vehicle.

Conventionally, in this type of vehicle, a differential device such as a differential clutch is installed at the rear of the transmission case extending rearward from the engine, connecting one axle with one rear wheel and the other axle with the other rear wheel. There is a known type in which the axles are arranged side by side in a pair of left and right, connected to each other through the case, and one of the axles is connected to the output shaft of the engine through the transmission mechanism in the case. Generally, each axle is supported by a pair of left and right bearing members inside the case, and thus the bearing members are generally provided for one pair of left and right bearings on each side, and the overall number of parts is reduced. This increases the size, making it troublesome to manufacture and increasing the weight, which is a disadvantage.

The purpose of the present invention is to obtain a device free from such inconveniences, and the present invention has an axle 4 having one rear wheel 3 on one side and a rear wheel 3 on the other side at the rear of a transmission case 2 extending rearward from an engine 1. The rear wheel 5 on one side is connected to the axle 6 on the other side via a differential device 7 such as a differential clutch, and the axle 4 on one side is arranged side by side in a pair on the left and right. In this axle support device, the transmission case 2 is connected to the output shaft 9 of the engine 1 via a rear transmission member 16 and a front transmission member 8 formed by a belt. a central main casing 2a having a support wall 14 that supports the transmission member 16;
a first cover member 2b covering the rear transmission member 16 together with the support wall 14;
a cover member 2c, and the axle 4 on one side is provided with a bearing member 10 located approximately in the center between the rear wheels 3 and 5 provided on the support wall 14, and a first bearing provided on the first cover member 2b. The second cover member 11 supports the axle 6 on the other side and the second cover member 2c provided on the end of the axle 4 on the one side and the second cover member 2c.
It is characterized by being supported by a bearing member 15.

In the illustrated example, a bearing hole 12 is provided at the inner end of the axle 4 on one side, and the axle 6 on the other side is fitted into and supported at the inner end. The axle 4 on one side is provided with a drive gear 13 on its outer periphery so that the output of the engine 1 is applied to the gear 13.

The details of the differential device 7 are, for example, as shown in FIGS. 2 and 3, that is, the differential device 7 is spline-engaged with the axle 4 on one side and is installed in an outer case 7a extending over the axle 6 on the other side. The friction plate 7b that engages with the axle 6 and the friction plate 7c that engages with the axle 6 are housed in a plurality of alternating plates and are pressed against each other by a disc spring 7d at the outer end. In the drawing, 7e indicates the outer circlip.

In this way, according to the present invention, the transmission case 2
, a central main casing 2a having a support wall 14 that supports the front transmission member 8 and the rear transmission member 16, a first cover member 2b that covers the front transmission member 8 together with the support wall 14, and a rear transmission member. 16 and the second cover member 2c that covers the support wall 14, the front transmission member 8 and the rear transmission member 16 inside the case 2 can be maintained separately by removing the respective cover members 2b and 2c. In addition, one side axle 4 connected to the output shaft 9 of the engine 1 is connected to a bearing member 10 located approximately in the center between the rear wheels 3 and 5 provided on the support wall 14, and a bearing member 10 provided on the first cover member 2b. 1 bearing member 11, and supports the axle 6 on the other side between the end of the axle 4 on the one side and the axle 6 on the other side.
Since the axles 4 and 6 are supported by the second bearing member 15 provided on the cover member 2c, the axles 4 and 6 are arranged side by side in a pair on the left and right.
The middle part of the axle is supported by the support wall 14 of the main housing 2a, and each span is approximately equal, so it is supported in a well-balanced manner, increasing the rigidity of the left and right axles 4 and 6, and reducing the weight by reducing the diameter of the axle. In addition, together with the ease of attaching the first and second cover members 2b and 2c, the ease of assembly can be significantly improved. Since the side axle 4 is supported at both ends by bearing members 10 and 11, its transmission strength is increased, and the other side axle 6 eliminates the inner bearing member to reduce the number of parts and reduce weight. It has effects such as being helpful.

[Brief explanation of the drawing]

FIG. 1 is a cutaway plan view of one side of the present device, FIG. 2 is an enlarged cross-sectional view of the main part thereof, and FIG. 3 is an exploded perspective view of a part thereof. 1...Engine, 2...Transmission case, 2a...
Main housing, 2b... first cover member, 2c... second cover member, 3... rear wheel, 4... axle, 5... rear wheel, 6... axle, 7... differential gear, 8... ...Front transmission member, 9...Output shaft, 10...Bearing member, 1
1... First bearing member, 14... Supporting wall, 15...
Second bearing member, 16...front transmission member.

Claims (1)

[Scope of utility model registration request] At the rear of the transmission case 2 extending rearward from the engine 1, an axle 4 having one rear wheel 3;
An axle 6 on the other side having a rear wheel 5 on the other side is connected via a differential device 7 such as a differential clutch and arranged side by side in a pair on the left and right, and the axle 4 on one side is connected to the gears in the transmission case 2. A rear transmission member 16 consisting of
In this axle support device, the transmission case 2 is connected to the output shaft 9 of the engine 1 via a front transmission member 8 formed by winding a belt. A central main casing 2a having a supporting wall 14 for supporting, a first cover member 2b covering the front transmission member 8 together with the supporting wall 14, and a second cover covering the rear transmission member 16 together with the supporting wall 14. The axle 4 on one side is configured with a bearing member 10 located approximately in the center between the rear wheels 3 and 5 provided on the support wall 14, and a first bearing member 10 provided on the first cover member 2b.
The axle is supported by a bearing member 11, and the axle 6 on the other side is supported by a second bearing member 15 provided on the end of the axle 4 on the one side and the second cover member 2c. bearing device.