JPS5933683Y2 - Axle housing in rigid axle - Google Patents

Description

[Detailed description of the invention] The present invention is a rigid axle, in particular, a rigid axle in which both ends of an axle housing, in which a differential carrier is provided laterally offset from the center of the vehicle, are connected to the vehicle body by an axle suspension system. The present invention relates to an improvement of the axle housing.

In the axle housing, the lengths from the differential carrier to the connecting portions with the axle suspension system at both ends are different on the left and right, and the deformation strength of the anti-offset side portion is inferior to the deformation strength of the offset side portion.

Therefore, when a large bending moment acts on the axle housing, the opposite-to-offset side portion may deform abnormally.

The present invention has been made with attention to this point, and one embodiment thereof will be described below based on the drawings.

1 and 2 schematically show the front part of the chassis of a four-wheel drive vehicle, in which both ends of the axle housing 10 are connected to a leaf spring 21.
21 and shock absorbers 22, 22 are connected to the vehicle body 20 by an axle suspension system.

Further, a bound stopper rubber 23 is attached to the upper center surface of the leaf spring 21 to come into elastic contact with the vehicle body 20.

In the axle housing 10, the differential carrier 11 is provided offset to the right (to the left in FIG. 2) from the center of the vehicle.

Further, in this axle housing 10, the cross-sectional shape from the differential carrier 11 to the connection part with the left (anti-offset side) leaf spring 21 is a vertically elongated oval shape as shown in FIG. and the cross-sectional shape of the other parts (the anti-offset side part from the connection part of the left leaf spring 21 to the left end, and the offset side part from the differential carrier 11 to the right end) (the short axis of the above-mentioned ellipse is the diameter). (identical circular cross section).

Therefore, the leaf spring 21 on the left side from the differential carrier 11 in the axle housing 10
The section modulus up to the connecting portion with the differential carrier 11 is larger than that of other parts except for the differential carrier 11, and the deformation strength is comparable to that of the other parts.

When the vehicle bounces and the bound stopper rubbers 23, 23 come into elastic contact with the vehicle body 20, a large bending moment acts on the axle housing 10 in the case of the above-mentioned intercepting or jid axle.

By the way, in this embodiment, the axle housing 1
Since the section modulus between the differential carrier 11 at 0 and the connecting portion with the left leaf spring 21 is large and the deformation strength is increased, deformation in this portion is suppressed.

Furthermore, in this embodiment, in order to increase the deformation strength on the anti-offset side of the axle housing 10, the cross-sectional shape from the differential carrier 11 to the connection part with the left leaf spring 21 is made into an elliptical shape.
Since the cross-sectional shapes of other parts are the same circular cross-section, the mounting parts of the leaf spring 21, the bound stopper rubber 2
The related parts of No. 3 can be made common parts for the left and right sides, which is extremely convenient in practice.

Furthermore, in this embodiment, in order to increase the deformation strength in the opposite-to-offset side portion of the axle housing 10, a method is adopted in which the cross-sectional shape of a portion of the axle housing 10 itself is made different, thereby eliminating the need for other members. figure,
Moreover, there is almost no damage to the appearance.

Although the above explanation is based on one embodiment of the present invention,
The present invention is not limited to the above-mentioned embodiments, but can be implemented with appropriate modifications within the scope of the claims for utility model registration.

In short, in the present invention, the cross-sectional shape of the offset side portion of the differential carrier in the axle housing is different from the cross-sectional shape of the anti-offset side portion, and the section modulus of the anti-offset side portion is made larger than the section modulus of the offset side portion. , the deformation strength of the anti-offset side portion can be increased, and deformation of the anti-offset side portion can be suppressed.

[Brief explanation of the drawing]

FIG. 1 is a side view schematically showing the front part of a chassis of a four-wheel drive vehicle, FIG. 2 is a front view of the same, and FIG. 3 is a longitudinal sectional view taken along the - curve in FIG. 2. Explanation of symbols, 10...Axle housing, 1
1...Differential carrier, 20...
... Vehicle body, 21 ... Leaf spring, 22
...Shock absorber, L...Vehicle center.

Claims (1)

[Scope of utility model registration request] In a rigid axle in which both ends of an axle housing in which a differential carrier is provided offset laterally from the center of the vehicle are connected to the vehicle body by an axle suspension system, a cross section of an offset side portion of the differential carrier in the axle housing is provided. An axle housing in which the cross-sectional shape of the anti-offset side part is different, and the cross-sectional modulus of the anti-offset side part is larger than that of the offset side part.