JPH08185Y2 - Vehicle running device - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a drive layout of a traveling system for a vehicle frame that drives multiple wheels. It is intended to facilitate compatibility with different types of differential gears and tires, and to make the mission common.

[Conventional technology]

Conventionally, for example, as described in Japanese Utility Model Laid-Open No. 56-31924 and its outline is shown in FIG. 5, a vehicle body a has a prime mover b, a clutch housing c, a mesh case d, etc. as a structure, and the prime mover b A front wheel bearing stand e is mounted on the front wheel bearing stand e, and a front axle case f is swingably supported on the front wheel bearing stand e. A front wheel differential device g is built in the front axle case f, and a front wheel drive shaft h that drives the front wheel differential device g is provided so as to project to the rear of the front axle case f and is provided in the motion case d. Includes a main transmission i, an auxiliary transmission j, a rear wheel differential k, and the like. The rear wheel differential k drives the rear wheel 1 arranged at the rear of the vehicle body 1 by the power of the prime mover b. It is a thing.

A power take-off shaft n of a power take-off device m provided inside the vehicle body a is mounted in the front-rear direction so as to project into the clutch housing c, and a rear end of the power take-out shaft n is a sub-transmission of the auxiliary transmission device j. It is connected to the speed change shaft o. The power takeoff device m
And the front wheel differential device g are connected by a propulsion shaft p.

[Problems to be solved by the device]

According to the above configuration, since the rear wheel differential k is built in the transmission case d, it is impossible to replace the front and rear differentials g and k as an assembly up to the part where the tire is attached. That is, it is necessary to prepare the front wheel differential device g for the front wheels and the rear wheel differential device k for the rear wheels as independent dedicated parts. Since the differential gear is a very expensive device, considering the compatibility including the case that supports the differential gear, the above configuration requires a case that always supports two differential gears g and k. There is a great burden in terms of performance and cost.

[Means for solving the problem]

Here, the present invention relates to a vehicle traveling device including a vehicle frame having a plurality of drive shafts, a prime mover mounted on the vehicle frame, and a main transmission and an auxiliary transmission integrally formed with each other, It is equipped with an independent distributor (8) to which the output of the auxiliary transmission (6) is input, and the disassembler (8) is connected to the actuating devices (10, 13) of the drive shafts (21, 24). Equipment (10,1
We propose a traveling device for vehicles that is connected to drive 3).

[Action]

According to the above configuration of the present invention, the front and rear differentials may have the same gear ratio, and if the tire diameter of the front wheels changes, it can be dealt with by changing the gears in the distributor, and the distributor on the rear wheel side. By separating the differential device and the differential device, the cases of both differential devices can be shared in the front and rear, it is easy to change to a model with different vehicle speed, and there is flexibility in the mounting position of the distributor. The front-rear weight distribution can be set for each model.

〔Example〕

 The invention will be described in detail with reference to the drawings.

In FIG. 1, the rotation of the prime mover 1 is transmitted to the pulley 2, the belt 3 and the pulley 4, and enters the main transmission 5 to be shifted.
Further, the speed is changed by the auxiliary transmission 6 which is integrated with the main transmission 5,
It enters the distributor 8 via the propeller shaft 7. The distributor 8 has a plurality of gears, which are divided into the propeller shaft 12 side and the coupling 9 side, respectively. The rotational force transmitted to the propeller shaft 12 enters the differential gear 13 and rotates the tire 14 mounted on the plurality of drive shafts 24. Also,
The rotational force transmitted to the coupling 9 enters the differential device 10 and rotates the tire 11 mounted on the drive shaft 21.

A vehicle frame on which the prime mover 1 is mounted and which includes the drive shaft 21.
Rotational force is transmitted from the main transmission 5 and the auxiliary transmission 6 through the propeller shaft 7 to the gear in the distributor 8 which is set as a part of the gear 15, and the coupling 9 and the differential device 10 are bolted to the gear. To be done. That is, the coupling 9 fixes the flange surface integral with the gear shaft inside the distributor 8 and the flange surface integral with the differential gear 10 with bolts.

FIG. 2 shows a case where the differential gears 10 and 13 have the same rotation direction and the same gear ratio, and the propeller shafts 7 and 12 rotate in opposite directions. FIG. 4 shows the case where the input rotation directions are the same, but the input rotation directions to the differential device 13 are reverse rotation or the gear ratios of the differential devices 13 and 10 are different. FIG. The case where the differential device 10 can be arranged in the center of the vehicle frame 15 is shown in the case where the rotation directions of the respective inputs of 1 and 13 are reverse rotation directions or the gear ratios are different. In FIGS. 3 and 4, the gear ratios of the differential devices 10 and 13 may be the same.

[Effect of device]

 According to this invention, the following effects can be obtained.

That is, (a) The hole base can be set short, and the vehicle frame has a small turning radius.

(B) By changing the gear ratio of the distributor, the main transmission and the sub-transmission are shared, and it is easy to change to a model having different tire diameters or different vehicle speeds.

(C) Since there is flexibility in the mounting position of the distributor and the front-rear weight distribution can be set for each model, the layout is excellent.

(D) In the past, three propeller shafts were required, but in the present invention, only two propeller shafts are needed, resulting in cost reduction. Further, since the two propeller shafts of the present invention have already been decelerated by the auxiliary transmission, they do not rotate at high speed, so there is no need to pay attention to balancing.

[Brief description of drawings]

FIG. 1 is a layout view of a traveling device of a vehicle of the present invention, FIGS. 2 to 4 are views showing three kinds of embodiments of the device of the present invention, and FIG. 5 is a layout view of a conventional device. is there. In the figure, 1 ... prime mover 5 ... main transmission 6 ... auxiliary transmission 8 ... distributor 9 ... coupling 10 ... differential device 12 ... propeller shaft 13 ... differential device 15 ... vehicle frame 16 ... Wheelbase.

Claims (1)

[Scope of utility model registration request] 1. A vehicle traveling apparatus comprising: a vehicle frame having a plurality of drive shafts; a prime mover mounted on the vehicle frame; and a main transmission and an auxiliary transmission integrally formed with each other. Independent distributor (8) to which the output of the auxiliary transmission (6) is input
A traveling device for a vehicle, comprising: the distributor (8) connected to the differential device (10, 13) of the drive shaft (21, 24) so as to drive the differential device (10, 13).