Trailing arm of a vehicle suspension

Abstract

The utility model relates to the transport industry, namely to the pneumatic suspension of vehicles, in particular to a longitudinal arm of a vehicle suspension. The longitudinal arm of a vehicle suspension is designed as an unequal-arm lever and comprises a larger and a smaller arm (1 and 2, respectively). At the intersection of the arms (1 and 2) and at the end of the larger arm (1), openings (3) for accommodating a hinge joint are made, and at the end of the smaller arm (2), an opening (4) for a tie rod is made. The smaller arm (2) is curved. The technical result consists in increasing the reliability and durability of the longitudinal arm of a vehicle suspension. 2 fig.

Description

[0001] The utility model relates to the transport industry, namely to the air suspension of vehicles, in particular to the longitudinal arm of the vehicle suspension.

[0002] A vehicle suspension trailing arm is known, consisting of two arms, the arms of which are positioned at an angle to each other and have different lengths, where the longer arm is curved, and the shorter arm is horizontal. A platform for attaching an elastic element is formed on the horizontal surface of the shorter arm, and holes for a tie rod and shock absorber mount are made on its vertical surface. At the intersection of the arms and at the end of the longer arm, thickenings are formed in the form of housings with holes for accommodating hinges for the articulated connection of the arm with the frame and axle (see patent RU 94517, IPC B60G3 / 00, published 05 / 27 / 2010).

[0003] The closest technical solution to the claimed solution in terms of the set of essential features is a longitudinal control arm of a vehicle suspension, designed as an unequal-arm control arm, where the longer arm is curved, and the shorter arm is horizontal. At the intersection of the arms and at the end of the longer arm, openings are made for accommodating the hinge joint, a support surface is made on the upper shelf of the smaller arm, and openings for a coupler and a shock absorber mount are made on the vertical wall, while the upper shelf of the smaller arm is made with a recess in the area of ​​the opening for mounting the shock absorber (see patent RU 231649, IPC B60G3 / 00, published 04.02.2025).

[0004] The disadvantages of known technical solutions are insufficient reliability and durability of the longitudinal lever, caused by low rigidity and strength of the longitudinal lever due to the implementation of the shoulder shelves of shorter length in a straight line, which does not allow the distribution of loads on the longitudinal lever and does not ensure the operation of the longitudinal lever in bending and tension at the same time.

[0005] The technical problem that the claimed technical solution is aimed at solving is increasing the reliability and durability of the vehicle's suspension trailing arm by increasing its rigidity and strength.

[0006] The technical result consists in increasing the reliability and durability of the longitudinal arm of the vehicle suspension and is achieved due to the fact that in the longitudinal arm of the vehicle suspension, made in the form of an unequal-arm lever, at the intersection of the arms of which and at the end of the larger arm, holes are made for placing the hinge joint, and at the end of the smaller arm, a hole is made for the tie, the smaller arm is made curved.

[0007] The distinctive feature is that the smaller shoulder is made curved.

[0008] Making the smaller arm curved, in combination with the features of the restrictive part of the formula, made it possible to increase the rigidity and strength of the longitudinal arm by distributing the load on the longitudinal arm and ensuring that the longitudinal arm works in bending and stretching simultaneously, and as a result, made it possible to increase the reliability and durability of the longitudinal arm and the vehicle suspension as a whole.

[0009] The claimed utility model is illustrated by drawings:

[0010] Fig. 1 - longitudinal arm of vehicle suspension, general view;

[0011] Fig. 2 - the same, side view.

[0012] The longitudinal arm of the vehicle suspension is designed as an unequal-arm lever and comprises a larger arm 1 and a smaller arm 2. At the end of arm 1, an opening 3 is made for accommodating a hinge joint for fastening to the vehicle frame bracket. At the intersection of arms 1 and 2, an opening 3 is made for accommodating a hinge joint for connecting to the vehicle axle. At the end of arm 2, an opening 4 is made for a tie rod, which can be made of any shape that prevents the suspension tie rod from twisting, in particular, an oval shape. The longitudinal arm can be made of a T- or I-beam profile, in particular an I-beam profile with upper and lower flanges. The flanges can be made expanding from the end of the larger arm 1 to the opening 4 for the tie rod. Arm 2 of shorter length is made curved, which allows for distributing the load on the longitudinal arm and ensuring that the longitudinal arm works in bending and tension simultaneously.

[0013] The claimed technical solution has made it possible to increase the reliability and durability of the vehicle's longitudinal suspension arm.

[0014] The claimed vehicle suspension trailing arm can be manufactured on standard equipment using modern technologies and materials.

Claims

A longitudinal suspension arm of a vehicle, made in the form of an unequal-arm lever, at the intersection of the arms of which and at the end of the larger arm there are openings for placing a hinge joint, and at the end of the smaller arm there is a hole for a tie rod, characterized in that the smaller arm is made curved.

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