JPH028574B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a rubber with a metal fitting and a method for manufacturing the same, and more particularly to a rubber with a metal fitting in a cylindrical shape having a flange portion projecting outward in the radial direction, and a method for drawing the same. It is related to.

Prior Art Conventionally, an outer cylinder 51 and an inner cylinder 52 integrally have a flange part 58 and a cylindrical part 59 as shown in FIG.
In the rubber with metal fitting 50 formed by adhering the rubber 57 to the rubber 57, a metal adhesive 53 is applied to the adhesive surface on the metal fitting side, a rubber adhesive 54 is applied to the adhesive surface on the rubber side, and then the rubber 57 is attached to the metal fitting. It is inserted into and glued together.

In order to increase the durability of the rubber with metal fittings 50, compressive stress is applied to the rubber 57 after the bonding described above, and the cylindrical portion 59 of the outer cylinder 51 is drawn with a die 65 as shown in FIG. I was gone. At this time,
Since only the inner portion of the cylindrical portion 59 of the rubber 57 is compressed, a force is applied to the rubber of the flange portion 58, which is not directly compressed, to reduce its diameter. Since the flange portion 58 is not drawn, a force is generated between the rubber bonded to the inside of the flange portion 58 and the metal fittings to cause them to separate. This peeling force acts particularly strongly at the corner portion 60 between the flange portion 58 and the cylindrical portion 59, and is applied at the interface 55 between the fitting and the metal adhesive 53 or between the metal adhesive 53 and the rubber adhesive 54.
Peeling occurred at the interface 56 between the two and the adhesive strength at that part was reduced.

Purpose The first object of the present invention is to reduce the peeling force between the rubber and the metal fittings caused by the drawing process, eliminate the peeling between the metal fittings and the rubber caused by the peeling force, and improve the adhesiveness of the metal fittings. It is an object of the second invention to provide a rubber with metal fittings that can not only significantly improve the durability of the rubber, but also to easily and quickly improve the rubber with metal fittings of the first invention. It is an object of the present invention to provide a manufacturing method that enables manufacturing.

Structure In order to achieve the above-mentioned object, the first invention provides a rubber with a fitting, in which a metallic outer cylinder having a flange portion projecting outward in the radial direction is adhered to at least a cylindrical outer periphery of the rubber. The flange part and the cylindrical part of the outer cylinder are drawn, and the second invention is a method for manufacturing a rubber with a fitting, in which a metal outer cylinder having a flange part is adhered to the outer periphery of the rubber. a step of adhering a metallic outer cylinder having a flange portion protruding radially outward to at least the cylindrical outer periphery of the rubber, and a flange portion and a cylindrical portion of the rubber outer cylinder with a fitting to which the outer cylinder is adhered; The structure consists of a process in which both are drawn at the same time.

Embodiments Hereinafter, embodiments of a cushion strut bar for an automobile according to the present invention will be described with reference to FIGS. 1, 2, and 3.

As shown in FIG. 1, the rubber with fittings 1 of the embodiment includes a metallic outer cylinder 2 that integrally has a cylindrical part 26 and a flange part 2a that projects radially outward from the cylindrical part 2b, and Flange portion 4a with inner cylinder 3 at end
They are placed inside and outside of the rubber 4 having the same structure, and are bonded with an adhesive 5.

The adhesive 5 consists of two layers: a metal adhesive 5a applied to the metal side and a rubber adhesive 5b applied to the rubber side.

Further, the metallic outer cylinder 2 has a cylindrical portion 2b and a flange portion 2a that are drawn.

A method of manufacturing the rubber with fittings 1 configured as described above will be explained.

First, a metal adhesive 5a is applied to the inner surface of the outer cylinder 2 and the upper surface of the flange portion. A rubber adhesive 5b is further applied to the coated surface to adhere the rubber 4.
This completes the process of bonding the metallic outer cylinder 2 to the outer periphery of the rubber 4. Through this bonding step, the rubber 4 and the metallic outer cylinder 2 are completely bonded to each other at the flange portion and the inner surface of the cylindrical portion 2b. Thereafter, a rubber adhesive 5b is applied to the inner surface of the rubber 4, and a metal adhesive 5a is further applied to the applied surface to adhere the inner cylinder 3.

Next, attach this cushion strut bar to the second and third sections.
The flange portion 2a and cylindrical portion 2b of the metallic outer cylinder 2 are drawn simultaneously by setting it in the die 11 shown in the figure.

This die 11 has a four-part structure, and the die 11 has a four-part structure.
1 is provided with an annular groove 12 on the opening side tip thereof, with which the end of the flange portion 2a before drawing comes into contact. A cylindrical hole 13 is transparently provided in the rear part of the annular groove 12, and comes into contact with the cylindrical portion 2b before drawing.

To explain this drawing process in order, the rubber with fittings 1 before drawing is inserted into the annular groove 12 so that the flange portion 2a is in contact with it. After that, the die 11 divided into four parts is tightened, and the flange part 2a and the cylindrical part 2 are tightened.
b is drawn at the same time. At this time, since the flange part 2a, which has not been drawn in the past, is also drawn at the same time, it is possible to reduce the peeling force generated between the flange part 2a and the rubber 4 bonded to the same part 2a during the drawing process. .

It should be noted that the present invention is not limited to the above-mentioned embodiments, but can also be modified as follows.

Change the number of die divisions. For example, 3, 5, 8
A similar effect can be obtained by using a die having a split structure such as the above.

Rubber with metal fittings is not limited to the cushion strut bar of the above embodiment, but rubber with metal fittings formed by adhering a metal outer cylinder having a flange portion, such as automobile bushings, engine mounts, and support struts. etc. can also be embodied. Further, the shape of the rubber is not limited to a substantially T-shaped cross section, with a flange portion projecting outward in the radial direction at the end as in the above embodiment, but may also be cylindrical or cylindrical. It is also possible to use rubber formed in multiple layers.

In the above embodiment, the process of applying the metal adhesive 5a and the rubber adhesive 5b to the inner surface of the metal outer cylinder 3 and bonding the rubber 4 was shown. The process may also be such that the metallic outer cylinder 3 is bonded by applying the adhesive 5a.

Effects As detailed above, the first invention of the present invention reduces the peeling force between the rubber and the metal fittings caused by the drawing process, and prevents the peeling between the metal fittings and the rubber caused by the peeling force. This has the effect that not only the adhesiveness can be significantly improved, but also the durability of the rubber can be improved.
Moreover, the second invention has the effect that the rubber with metal fittings of the first invention can be manufactured simply and quickly.

[Brief explanation of drawings]

Fig. 1 is a sectional view of the rubber with metal fittings of the present invention;
Figure 3 is a front view and sectional view of the main parts of the die in the drawing process of the present invention, Figure 4 is a sectional view showing a conventional rubber with metal fittings, and Figure 5 is a sectional view of the die in the conventional drawing process. .

Claims (1)

[Scope of Claims] 1. A rubber with a fitting 1 in which a metallic outer cylinder 2 having a flange portion 2a projecting radially outward is adhered to at least the cylindrical outer periphery of the rubber 4,
A rubber with metal fittings characterized in that a flange portion 2a and a cylindrical portion 2b of the outer cylinder 2 are drawn. 2. The rubber with fittings according to claim 1, characterized in that a metal inner cylinder 3 is adhered to the inner periphery of the rubber 4. 3. A method for manufacturing a rubber with metal fittings 1 in which a metal outer cylinder 2 having a flange portion 2a is adhered to the outer periphery of a rubber 4, in which at least the cylindrical outer periphery of the rubber 4,
A step of gluing a metal outer cylinder having a flange portion 2a projecting radially outward, and a flange portion 2a and a cylindrical portion 2b of the outer cylinder of the rubber 1 with fittings to which the outer cylinder is adhered.
A method for manufacturing rubber with metal fittings, which consists of a process of drawing and processing at the same time. 4. Manufacturing of the rubber with fittings according to claim 3, characterized in that before the drawing process, a metallic inner cylinder 3 is adhered to the inner periphery of the rubber 4 of the rubber with fittings 1. Method. 5. The method for manufacturing rubber with metal fittings according to claims 3 and 4, wherein the drawing process is performed using a multi-segment die 11. 6. The method of manufacturing rubber with a fitting according to claims 3 to 5, wherein the multi-segment die 11 has an annular groove 12 into which the flange portion 2a fits.