JP2001213132A - Mounting structure of stabilizer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase the durability of a stabilizer by eliminating a twist caused on the stabilizer. SOLUTION: A socket 41 is provided at the tip of a stabilizer arm 36 having a base end fixed to both ends of a stabilizer bar 33, the held part 42a of a mounting shaft 42 is held on the socket 41 and the mounting shaft 42 is installed rotatably in the stabilizer arm 36, and both ends of the mounting shaft 42 are installed in an axle housing or suspension beam 28. The held part 42a is formed spherically and held spherically by the socket 41, and the mounting shaft 42 is installed rotatably in the stabilizer arm 36.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stabilizer mounting structure in which a tip of a stabilizer arm is mounted on an axle housing or a suspension beam via a mounting shaft.

[0002]

2. Description of the Related Art As a suspension device for a vehicle such as a truck, there is known an air suspension pen device for connecting left and right sides of an axle housing to a chassis frame via a suspension beam and an air spring.
In this device, a total of four air springs are used for one axle, and the axle rotates by the output of the engine, and the vehicle can run by rotating wheels provided at both ends thereof. . In an air suspension device that supports the vehicle body with such an air spring, the sprung resonance point can be set lower and fine vibrations can be absorbed as compared with the method in which the vehicle body is supported by a metal spring. It can be improved.

[0003] On the other hand, such a suspension device includes a radius rod serving as a strut rod or a retraction rod between an axle housing and a chassis frame;
The vehicle is provided with a stabilizer that suppresses the inclination of the chassis frame and the body outward when the vehicle turns. In the case of stabilizers such as trucks, those with the base ends of stabilizer arms fixed to both ends of the stabilizer bar are used to effectively press down the tilt because the inertia force that tilts the chassis frame etc. when turning the vehicle is relatively large. For the stabilizer bar, a pipe or a solid rod is used. The stabilizer bar extends in the vehicle width direction and is pivotally supported by the chassis frame, and the tip of the stabilizer arm is rotatably held by the axle housing or the suspension beam.

In the stabilizer mounted as described above, when the chassis frame is tilted with respect to the axle housing, the pair of stabilizer arms rotate in different directions, respectively, and the stabilizer bar to which the base ends thereof are fixed is twisted. The torsion rigidity of the bar can prevent the chassis frame and the body from tilting. As shown in FIG. 5, in the conventional stabilizer mounting structure, a socket 1 is provided at the tip of a stabilizer arm 6, and a cylindrical holding portion 2 a formed substantially at the center of the mounting shaft 2 rotates on the socket 1. It is held so that both ends of the mounting shaft 2 are mounted on the axle housing or suspension beam 8.

[0005]

However, in the conventional stabilizer mounting structure, when the chassis frame and the body are tilted with respect to the axle housing, the mounting shaft 2 mounted on the axle housing or the suspension beam 8 is also tilted. The tip of the arm 6 also has its mounting shaft 2
As a result, there is a problem that the stabilizer arm 6 is twisted and twisted. The torsion generated in the stabilizer arm 6 does not have a role to positively suppress the inclination of the chassis frame or the like, and generates stress in the stabilizer arm 6 itself and a portion where the stabilizer bar and the stabilizer arm 6 are fixed to each other to reduce the durability of the stabilizer itself. There was a problem of lowering. An object of the present invention is to provide a stabilizer mounting structure capable of improving the durability of the stabilizer by eliminating the twist generated in the stabilizer arm.

[0006]

The invention according to claim 1 is
As shown in FIGS. 1 and 2, a socket 41 is provided at a distal end of a stabilizer arm 36 having a base end fixed to both ends of a stabilizer bar 33, and a held portion 42 a of a mounting shaft 42 is held by the socket 41. This is an improvement of the stabilizer mounting structure in which the shaft 42 is rotatably mounted on the stabilizer arm 36 and both ends of the mounting shaft 42 are mounted on the axle housing or the suspension beam 28. The characteristic configuration is that the held portion 42a is formed in a spherical shape,
The held portion 42a is spherically held by the socket 41, and the mounting shaft 42 is swingably mounted on the stabilizer arm 36. According to the first aspect of the present invention, the mounting shaft 42 is connected to the axle housing or the suspension beam 2.
8, the holding portion 42a of the mounting shaft 42 is spherically held by the socket 41, so that the mounting shaft 42 swings with respect to the stabilizer arm 36, and the stabilizer arm 3
6 prevents itself from being twisted. For this reason, stress due to the torsion of the stabilizer arm 36 does not occur in the portion where the stabilizer bar 33 is fixed.

[0007]

Embodiments of the present invention will now be described with reference to the drawings. As shown in FIGS. 3 and 4, the axle 11 (FIG. 4) of the truck 10 is inserted into an axle housing 12 extending in the vehicle width direction, and is rotatably held by the housing 12. A pair of rear wheels 13, 13 are attached to the outer end of the axle 11, respectively. First and second air springs 16 and 17 are disposed on the first side frame 14 before and after the axle 11, and third and fourth air springs 26 and 17 are mounted on the second side frame 24 before and after the axle 11.
27 are provided. These air springs 16,1
7, 26 and 27 have a pair of suspension beams 18,
28 are provided. That is, the first suspension beam 1
8 has a front end bonded to the first air spring 16 and a rear end
It is bonded to the air spring 17. The second suspension beam 28 has a front end bonded to the third air spring 26 and a rear end bonded to the fourth air spring 27. An axle housing 12 that rotatably supports the axle 11 is attached to the center of the suspension beams 18 and 28 in the longitudinal direction, and the axle housing 12 spans the first and second suspension beams 18 and 28.

A pair of radius rods 31, 31 are mounted between the axle housing 12 and the first and second side frames 14, 24. Specifically, the rear ends of the radius rods 31, 31 are rotatably mounted on the axle housing 12, respectively, and the front ends of the radius rods 31, 31 are rotatably mounted on the first and second side frames 14, 24, respectively. These rods 31 are arranged in a substantially V-shape in which the distance gradually decreases from the front end to the rear end in plan view. A stabilizer 32 is provided between the first and second side frames 14, 24 and the first and second suspension beams 18, 28.
As shown in FIG. 2, the stabilizer 32 is formed by fixing the base ends of first and second stabilizer arms 34 and 36 to both ends of a stabilizer bar 33 extending in the vehicle width direction, as shown in FIGS. 3 and 4. And this radius rod 3
1 and 31 and stabilizer arms 34 and 36 are connected to the axle housing 12 and the first and second side frames 14 and 2.
4 and serves as a tension rod or pull-back rod.

First and second mounting brackets 19, 19 are provided on first and second side frames 14, 24 in front of the axle 11.
The first and second mounting brackets 19 and 29 are provided with stabilizer bars 3 at the lower ends of the first and second mounting brackets 19 and 29, respectively.
3 is pivoted. Both ends of the stabilizer bar 33 are respectively inserted into the base ends of the first and second stabilizer arms 34 and 36 and fixed by welding or the like (FIG. 2), and the distal ends of the stabilizer arms 34 and 36 are connected to the first and second suspension beams. 18 and 28. The first and second stabilizer arms 34, 36 are formed by flat bars, respectively, and the first and second suspension beams 18, 40 are formed with the flat bar width direction oriented vertically.
28 (FIG. 3). The distal ends of the first and second stabilizer arms 34 and 36 are attached to the first and second suspension beams 18 and 28, respectively.
1 (FIG. 1) and the mounting shaft 42, which have the same structure. Therefore, the case of the second stabilizer arm 36 will be described below as a representative.

As shown in FIG. 1, the socket 41 is inserted into a mounting hole 36a formed at the tip of the stabilizer arm 36, and the mounting shaft 42 is held by the socket 41.
The socket has a cylindrical socket main body 41c inserted into a mounting cylinder 41a via a buffer layer 41b, and a resin bearing 41d is housed in the socket main body 41c. On the other hand, a holding portion 42a held by the socket 41 is formed at a substantially central portion of the mounting shaft 42. The holding shaft 42 holds the holding portion 42a, so that the mounting shaft 42 is rotatably attached to the tip of the stabilizer arm 36. Mounted. A characteristic configuration of the present invention is that the held portion 42a is formed in a spherical shape, and the resin bearing 41d of the socket 41 is provided.
Accommodates the held portion 42a, and the held portion 42a is spherically held by the socket 41. Dust covers 41e, 41e are provided on both sides of the socket body 41c to prevent dust from entering the resin bearing 41d, and the mounting shaft 42 is rotatably and swingably attached to the stabilizer arm 36. Mounted. On the other hand, the suspension beam 28 is formed with a concave groove 28a into which the distal end of the stabilizer arm 36 can be inserted, and both ends of the mounting shaft 42 are mounted on the suspension beam 28 with the distal end of the stabilizer arm 36 inserted into the concave groove 28a. Can be

[0011] The stabilizer 32 mounted in this manner.
For example, when the truck 10 turns and rolls on a road that curves to the right, the first and second side frames 14 and 24 incline to the left with respect to the accelerator housing 12. When the first and second side frames 14, 24 tilt,
The distal ends of the first and second stabilizer arms 34 and 36 rotate in opposite phases up and down, and the stabilizer bar 33 is twisted. The stabilizer bar 33 serves as a resistance against rotation of the first and second stabilizer arms 34 and 36 in opposite phases due to the torsional rigidity thereof, and the first and second side frames 1
4 and 24 are restrained from tilting outward.

On the other hand, the first and second side frames 14,
When the 24 is inclined with respect to the accelerator housing 12, the mounting shaft 42 is also inclined with the suspension beams 18, 28.
However, since the holding portion 42a of the mounting shaft 42 is spherically held by the socket 41, the mounting shaft 42 swings with respect to the stabilizer arms 34 and 36 and is twisted by the first and second stabilizer arms 34 and 36, respectively. Is prevented from occurring. For this reason, stress due to twisting of the stabilizer arms 34 and 36 does not occur in the portion where the stabilizer bar 33 is fixed, and the durability of the stabilizer 32 is improved.

In this embodiment, the vehicle is a truck, but the stabilizer of the present invention can be applied to a bus or other vehicles. In this embodiment, the tip of the stabilizer arm is attached to the suspension beam, but the tip of the stabilizer arm may be attached to the axle housing.

[0014]

As described above, according to the present invention, the held portion is formed in a spherical shape, and the held portion is spherically held in the socket, and the mounting shaft is swingably mounted on the stabilizer arm. Therefore, even if the vehicle is tilted and the mounting shaft is tilted together with the axle housing or the suspension beam, the mounting shaft swings with respect to the stabilizer arm, thereby preventing the stabilizer arm itself from being twisted. As a result, it is possible to prevent the occurrence of stress due to the twisting of the stabilizer arm in the portion where the stabilizer bar is fixed, and to improve the durability of the stabilizer.

[Brief description of the drawings]

FIG. 1 is an enlarged cross-sectional view of a portion A in FIG. 2 showing a state where a socket of a stabilizer of the present invention holds a mounting shaft spherically.

FIG. 2 is a plan view of the stabilizer.

FIG. 3 is a plan view of an air suspension device including the stabilizer.

FIG. 4 is a left side view of the air suspension device.

FIG. 5 is an enlarged sectional view showing a conventional example and corresponding to FIG.

[Explanation of symbols]

 28 Suspension Beam 32 Stabilizer 33 Stabilizer Bar 36 Stabilizer Arm 41 Socket 42 Mounting Shaft 42a Holder

Claims (1)

[Claims] 1. A socket is provided at a distal end of a stabilizer arm (34, 36) having a base end fixed to both ends of a stabilizer bar (33).
(41) is provided, the held portion (42a) of the mounting shaft (42) is held by the socket (41), and the mounting shaft (42) is rotatably mounted on the stabilizer arm (34, 36). In a stabilizer mounting structure in which both ends of the mounting shaft (42) are mounted on axle housings or suspension beams (18, 28), the held portion (42a) is formed in a spherical shape, and the held portion (42a) Is held spherically by the socket (41) and the mounting arm (42) is swingable.
A stabilizer mounting structure, which is mounted on (34, 36).