JPH0355323B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an insulator structure with a stopper that is effective for use in automobile suspensions.

Car suspension can be broadly classified into axle type,
Swing arm type, double link type, etc. are known, but if you look at the structure of an axle type suspension as an example, the final reduction gear and differential gear are integrated into the axle, and the drive is inside the hollow axle. A typical mechanism is such that the driving force is transmitted to the wheels through an axle, the axle supports the vehicle body via a coil spring or a leaf spring, and is equipped with a shock absorber.

That is, according to the link type suspension shown in FIG. 1, a lower link 2 and an upper ring bracket 3 are attached to an axle 1 to support a wheel 4, a shock absorber 5 is installed, and a coil spring 6 is interposed between the vehicle bodies. to absorb vibrations. A vibration isolating rubber 7 is usually attached to the upper end of the coil spring 6, and a bound bumper rubber 8 is placed in contact with the vibration isolating rubber 7 from above. However, as shown in a partially enlarged view in FIG. 2 (not publicly known), an insulator rubber 10 is fixed to the upper side of the bracket 9 projecting from the vehicle body. One end of the coil spring 6 is supported by a support piece 11 fixed to the outer periphery of the coil spring 10. Further, in order to attach the bound bumper rubber 8 adhesively fixed to the base body 15 at the lower end of the bracket 9, a threaded rod 12 extending integrally with the base body 15 is inserted into the bracket 9 and a washer 13 and a nut 14 are used. It is fixed,
When the vehicle body is strongly rocked, the bound bumper rubber 8 comes into contact with the anti-vibration rubber 7 (FIG. 1) protruding from the axle side, thereby stopping the strong rocking.

However, in the conventional configuration described above, the bound bumper rubber 8 and the bracket 9 are connected to the base body 15.
Since the structure is fixed with bolts and nuts through the holder, it is not easy to assemble and the number of parts increases, resulting in high costs. That is, in order to fix the bound bumper rubber 8, it is necessary to first vulcanize and adhere the bound bumper rubber 8 to the base body 15, and then to fasten it using the nuts 14, which increases the number of work steps and reduces the number of bolts. Looseness may occur due to insufficient tightening, which is a drawback in assembly.

The purpose of the present invention is to provide a device that eliminates the various drawbacks mentioned above in the conventional insulator structure with a stopper.To achieve this purpose, a bracket protruding from the vehicle body side and an insulator attached to the bracket are provided. A stopper comprising a rubber and a bound bumper rubber that collides with a mating member during rocking, and has a structure in which the insulator rubber and the bound bumper rubber are integrally vulcanized and bonded to the bracket. An insulator structure was obtained.

The present invention will be described in detail below based on the drawings.

In FIG. 3, reference numeral 21 denotes a bracket consisting of a flange portion 21a attached to the vehicle body side and a bottomed cylindrical body 21b projecting downward from the flange portion 21a. Insulator rubber 22 on top
are vulcanized and bonded together. The insulator rubber 22 is an annular rubber member having a rubber flange 22a extending and fixed near the lower surface of the flange portion 21a of the bracket 21, and having a coil spring support 23 vulcanized and bonded on the outer peripheral surface. The coil spring support body 23 supports the upper end of the coil spring 24.

On the other hand, on the lower end surface 21c of the bottomed cylindrical body 21b of the bracket 21, a bound bumper rubber 25 is vulcanized and bonded integrally with the bracket 21 and protrudes downward. . This bound bumper bar 25 is set in a position opposite to a vibration-proof rubber or metal member installed on the axle side, and has the function of stopping vibrations when the two collide when the vehicle is subject to large vibrations or rocking. What is being done is as described above. That is, in the present invention, the insulator rubber 22,
It is characterized in that a bound bumper rubber 25 is integrally vulcanized and bonded to a bracket 21 that projects from the vehicle body side. The rubber flange 22a is positioned between the flange portion 21a and the coil spring support 23 to prevent the two members from colliding.

The configuration according to the present invention can bring about various advantages and effects in use as described below. First of all, when looking at the number of parts in the configuration, there is no need for the base, bolts, nuts, and washers that were required to attach conventional bound bumper rubbers, so the number of parts can be greatly reduced, and the structure is extremely simplified. can do. Since the rubber flange extending to the insulator rubber is vulcanized and bonded to the upper part of the outer wall of the bottomed cylindrical body near the lower surface of the flange of the bracket, the adhesive strength of the insulator rubber to the bracket is further increased. It has the advantage of being able to Furthermore, when adhering the insulator rubber 22 and the bound bumper rubber 25, they can be molded and fixed at the same time in the same mold, which simplifies the manufacturing process, increases mass productivity, and lowers costs. Also, when in use, the rubber flange extending from the insulator rubber
It is located between the flange portion of the bottomed cylindrical body and the coil spring supporter, and has the effect of buffering the collision between the two members, and has the effect of preventing the occurrence of abnormal noise due to the collision. Furthermore, even after long-term use, there is no loosening phenomenon caused by insufficient tightening of the bolts, so reliability is increased, and it can be applied to link-type suspensions of automobiles with great effect.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing a part of the link type suspension, Fig. 2 is a sectional view showing the main part of a conventional insulator structure with a stopper, and Fig. 3 is a main part of the insulator structure with a stopper according to the present invention. FIG. 21... Bracket, 21a... Flange part,
21b... Bottomed cylindrical body, 22... Insulator rubber, 22a... Rubber flange, 23... Coil spring support, 24... Coil spring, 25... Bound bumper rubber.

Claims (1)

[Claims] 1 In a link-type suspension that includes an insulator rubber that supports one end of a coil spring and a stopper rubber that stops strong rocking, the flange part attached to the vehicle body side and the part below the flange part a bracket consisting of a bottomed cylindrical body protruding from the bottom; a bracket extending and fixed near the lower surface of the flange of the bracket at a position that prevents collision between the flange portion and the coil spring support body; an annular insulator rubber having a rubber flange portion, which is vulcanized and bonded to the upper part of the outer wall of the bottomed cylindrical body, and a coil spring support body is vulcanized and bonded to the outer peripheral surface; and the bottomed cylindrical body. An insulator structure with a stopper characterized by comprising a bound bumper rubber which is integrally vulcanized and bonded with a bracket to the lower end surface of a shaped body and projects downward.