JPH0710924Y2 - Torque transmission shaft - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION a. Field of Industrial Application The present invention relates to a torque transmission shaft for power transmission, which is provided between a transmission and a differential gear in a vehicle.

b. Prior Art In a vehicle, particularly an automobile, when transmitting power from a transmission to a rear differential gear, for example, a torque transmission shaft having a structure shown in FIGS. 2 and 3 is used. That is, a is an inner shaft, b is an outer tube, c is a transmission case, d is a rear differential carrier, the outer tube b and the transmission case c are via a flange member e, and the outer tube b and the rear differential carrier are flanges. They are connected to each other via the member f.

The flange members e and f are fitted at both ends of the outer tube b as shown in the figure and fixed by welding or caulking.
And the rear differential carrier d, a plurality of mounting bolts h,
They are fastened and fixed by i. j is an output shaft of the transmission and k is an input shaft of the rear differential, which are spline-fitted to both ends of the inner shaft a.
m is the inner side of the outer tube b and the inner shaft a
Is a plurality of bearings that hold the rotatably.

c. Problems to be Solved by the Invention In the torque transmission shaft having the above-described configuration, the flange member e is welded and fixed to the outer tube b, and is abutted on and fixed to the flange of the transmission case c. . The flange member f is also fixed on the rear differential carrier d side in the same manner. in this case,
The dimension in the length direction cannot be adjusted, and the length itself reaches around 2 m, so the dimensional tolerance becomes large. Therefore, when the torque transmission shaft is assembled to the vehicle body, the mounting position on the engine, the transmission side, or the rear differential carrier side is adjusted. For example, in particular, a sub-frame is provided between the vehicle body and the lengthwise direction of the sub-frame is adjusted by, for example, bolting using a slot provided in the sub-frame. As described above, there is a big problem in assembling the torque transmission shaft.

d. Means for Solving Problems The present invention has been made in view of the above circumstances, and an object thereof is to provide a torque transmission shaft that solves the above problems.

That is, according to the present invention, in a torque transmission shaft formed of an outer tube holding an inner shaft, a flange member for mounting and a nut for tightening and fixing are screwed to at least one end of the outer circumference of the outer tube. It is a characteristic torque transmission shaft.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 shows a torque transmission shaft connected to the transmission side, 1 is an inner shaft, 1a is a spline provided at the end of the shaft, 2 is an outer tube, and 3 is an inner shaft 1 rotatably supported in an outer tube 2. The plurality of bearings 4 are flange members screwed to the outer circumference of the end portion of the outer tube 2.

The outer tube 2 is provided with a threaded portion 2a within a predetermined range from the end thereof, and is screwed with a threaded portion 4c provided on the inner surface of the flange member 4, so that the end surface of the mounting portion 4a of the flange member 4 has an outer surface of the outer tube 2. It is structured so that it can be accessed from the end.

Reference numeral 5 is a tightening nut, which is screwed into the threaded portion 2a of the outer tube 2 and can be brought into contact with the end 4b of the flange member 4.

Although not shown, the rear differential carrier side of the outer tube 2 is also configured in the same manner, and the same flange member and tightening nut are provided.

The screw parts on the transmission side and the rear differential carrier side are mutually opposite screws.

Reference numeral 10 is an output shaft of the transmission, 11 is a case of the transmission, and 11a is a flange for mounting the case.

e. Action In order to mount and fix the torque transmission shaft having the above-described structure between the transmission and the rear differential carrier, the tightening nut 5 is loosened, and the space between the mounting end face of the flange member 4 and the mounting end face of the flange member on the rear differential carrier side is loosened. After retracting so that it is slightly shorter than the mounting dimension of the torque transmission shaft, facing the mounting surface of the other side, and then rotating the outer tube 2, each flange member becomes a reverse screw. Therefore, they move to the outside at the same time, and their mounting portions 4a and the like come into contact with the mounting surfaces of the transmission and the rear differential carrier, and can be easily fixed by the bolts 15 and the like. Then, the mounting is completed by tightening the tightening nut 5 and the like. Prior to the rotation of the outer tube 2, both flange members are locked to a mating member to be attached so that both flange members do not rotate together with the outer tube 2.

Further, the inner shaft 1 may be horizontally moved and spline-fitted to the output shaft 10 of the transmission and the human power shaft of the rear differential.

The flange members provided at both ends of the outer tube 2 may be only one of them.

f. Effect of the Invention Since the torque transmission shaft according to the present invention is configured as described above, it is not necessary to strictly regulate the dimensional tolerance of the length of the torque transmission shaft itself. Moreover, the adjustable range is wide.

Further, the cost reduction effect can be obtained since the subframe for adjusting the size of the engine and the vicinity of the rear differential, which has been conventionally used, is unnecessary.

[Brief description of drawings]

FIG. 1 is a sectional explanatory view of a torque transmission shaft according to the present invention, and FIG.
FIG. 3 and FIG. 3 are cross-sectional explanatory views of a conventional torque transmission shaft,
Fig. 2 shows the torque transmission shaft on the transmission side,
The figures respectively show the torque transmission shafts on the rear differential carrier side. 1 ... Inner shaft, 2 ... Outer tube, 4 ... Flange member, 5 ... Tightening nut.

Claims (1)

[Scope of utility model registration request] 1. A torque transmission shaft comprising an outer tube holding an inner shaft, wherein a flange member for mounting and a nut for tightening and fixing are screwed onto at least one end of the outer periphery of the outer tube. Characteristic torque transmission shaft.