JPH0522406Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to an axle beam used in a rear wheel suspension of a front-wheel drive vehicle, and particularly to its vibration-proofing structure.

[Prior Art] An example of the above axle beam is shown in FIG. 2. The axle beam 1 is a long cylindrical body arranged in the vehicle width direction, and an axle 2 for supporting wheels is provided at both ends. Suspension arms 3 are provided protruding from both ends of the axle beam 1, and the tips of the arms 3 are rotatably connected to an underbody suspension member or the like via a vibration-proof mount (not shown). Additionally, axle beam 1 has a shock absorber and spring (not shown) between it and the body.
will be provided.

The axle beam 1 is, as shown in FIG.
It has a U-shaped cross section that opens downward, and a stabilizer 4 made of a torsion bar is disposed in the longitudinal direction at the center of the opening, and both ends of the stabilizer 4 are fixedly connected to both end surfaces of the axle beam 1.

In an axle beam having such a structure, the axle beam may vibrate in a curved manner when the vehicle is braking, etc., and generate cylinder resonance noise. To prevent this, the inside of the cylinder of the axle beam is divided in the longitudinal direction as shown in the figure. A vibration-proof rubber body 5' is provided in elastic contact with the stabilizer 4 and the axle beam 1.

[Problems to be solved by the invention] By the way, it is necessary to apply anti-corrosion coating to the axle beam and stabilizer, but painting with the anti-vibration rubber body installed may cause deterioration of the anti-vibration rubber body or damage to the anti-vibration rubber body. This method cannot be adopted because the rubber body installation part cannot be painted. Therefore, in the past, we prepared axle beams and stabilizers with anti-rust coating, respectively.
When assembling these, a vibration isolating rubber body is inserted, but
This had the problem of requiring time and effort to assemble.

The present invention is an attempt to solve this problem, and it is possible to easily provide a vibration-proof rubber body with the stabilizer installed on the axle beam, and therefore, it is possible to install the anti-vibration rubber body on the axle of a vehicle without requiring any labor. The purpose is to provide a beam.

[Means for Solving the Problems] The configuration of the present invention will be explained with reference to FIG.
A vibration-proof rubber body 5 is provided in elastic contact between the inner walls.

The vibration isolating rubber body 5 includes a pair of main body parts 51A and 51 which are inserted from below between the both side walls of the stabilizer 4 and the axle beam 1 and come into elastic contact with them.
B, and a connecting portion 52 that connects the two main body portions 51A, 51B, and the connecting portion 52 is disposed along the outer peripheral surface of the axle beam 1 and connects the two main body portions 51A, 51B to the axle beam 1. It is locked.

[Operations and Effects] When installing the vibration isolating rubber body 5, first insert the main body portion 51A into one of the gaps between the axle beam 1 and the stabilizer 4 to make elastic contact therewith, and then connect the connecting portion 52. Turn it around the outer circumferential surface of axle beam 1. Then, the other main body portion 51B is inserted into the other gap between the axle beam 1 and the stabilizer 4 and brought into elastic contact.

According to the axle beam having such a structure, the anti-vibration rubber body can be easily installed after the assembly of the stabilizer is completed, and the labor for assembly can be significantly reduced. Since the main body part inserted between the axle beam and the stabilizer is locked to the axle beam by the connecting part, there is no risk of it falling off due to vibration or the like.

Furthermore, even if the stabilizer is not located at the center of the axle beam due to an assembly error or the like, either one of the main bodies comes into elastic contact with both with sufficient strength to suppress vibration.

[Embodiment] In FIG. 2, a cylindrical axle beam 1 disposed in the vehicle width direction is provided with a bracket plate 21 covering both ends, and an axle 2 is fixed to the bracket plate 21. A stabilizer 4 is arranged longitudinally within the axle beam 1, and both ends thereof are connected and fixed to the bracket plate 21. The axle beam 1 has suspension arms 3 protruding from both ends thereof and is rotatably connected to a suspension member on the body side.

The axle beam 1 is provided with vibration isolating rubber bodies 5 according to the present invention at two locations in the longitudinal direction. The details are shown in FIG.

In the figure, the axle beam 1 has a U-shaped cross section that opens downward, and the stabilizer 4 is located in the center near the opening. The anti-vibration rubber body 5 includes a pair of body parts 51A and 51B disposed between the stabilizer 4 and both side walls of the axle beam 1, and a pair of body parts 51A and 51B disposed along the upper half circumferential surface of the axle beam 1. A thin connecting part 5 that connects the
Consists of 2. The main body parts 51A and 51B have a constant width,
It has a slightly thicker wall thickness (dashed line in the figure) than the gap between the side wall of the stabilizer 4 and the axle beam 1, and its tip is tapered. Main body part 51A, 51
The side surface of B facing the stabilizer 4 is a concave surface along the outer periphery of the stabilizer, and the side surface facing the axle beam 1 is provided with an arcuate recess 511. As a result, the tip portions of the main body portions 51A, 51B are thicker than the middle portion.

The vibration isolating rubber body 5 having the above structure can be easily installed with the stabilizer 4 assembled to the axle beam 1. That is, after inserting one main body part 51A into one of the gaps between the axle beam 1 and the stabilizer 4 and bringing it into elastic contact, the connecting part 52 is turned onto the upper half circumferential surface of the axle beam 1, and the other main body part 51B is inserted into the other gap. Insert it into contact with the ball. At the time of this insertion, it is preferable to apply kerosene or soap solution as a lubricant to the main body parts 51A and 51B. Furthermore, as the rubber material for the vibration isolating rubber body 5, it is preferable to use natural rubber, which has large damping, excellent durability, and flexibility.

Insertion of the main body parts 51A and 51B is smooth due to the tapered tips, and after insertion, the thick tip makes strong elastic contact with the axle beam 1 and stabilizer 4, suppressing the bending vibration of the axle beam 1. do. In this state, both main body parts 51A, 5
1B is securely locked to the axle beam 1 by the connecting portion 52 arranged along the upper surface of the axle beam 1, so there is no risk of it falling off due to vibration.

Thus, in the axle beam of the present invention, the vibration isolating rubber body can be easily attached after the axle beam has been assembled and painted, so the number of assembly steps can be significantly reduced.

In addition, the stabilizer may not necessarily be located at the center of the axle beam due to assembly errors, etc., but since the vibration isolating rubber body has a pair of left and right body parts, at least one body part has sufficient strength. to suppress vibration by making elastic contact with the stabilizer and axle beam.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view of an axle beam provided with a vibration-proof rubber body, a cross-sectional view taken along the line - in Fig. 2, a perspective view of the entire axle beam, and Fig. 3 shows a conventional example. 1 is a sectional view of an axle beam provided with a body; FIG. 1... Axle beam, 4... Stabilizer,
5... Anti-vibration rubber body, 51A, 51B... Main body,
52...Connection part.

Claims (1)

[Scope of utility model registration request] The axle beam, which is a long cylindrical body with a U-shaped cross section opening downward and has an axle at both ends, is provided with a rod-shaped stabilizer inside, and a bar-shaped stabilizer is provided inside the axle beam to prevent elastic contact between the stabilizer and the inner wall of the axle beam. In the axle beam of a vehicle provided with a vibrating rubber body, the vibration isolating rubber body is inserted from below between both side walls of the stabilizer and the axle beam, respectively, and comes into elastic contact with the stabilizer and the axle beam; An axle beam for a vehicle, comprising a connecting part that connects both body parts, and the connecting part is arranged along the outer peripheral surface of the axle beam so that both the body parts are locked to the axle beam.