JPS6011305Y2 - Corrosion-resistant anti-vibration support member - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to an improvement of a corrosion-resistant anti-vibration support member that prevents peeling.

[Background technology of the invention and its problems]

As shown in FIG. 1, this type of anti-vibration support member 1 consists of an engine case 2 of an outboard motor body and a steering bracket 3.
In addition, the structure is such that engine rotational vibrations on the edging case 2 side are not transmitted to the hull side.

That is, as shown in FIG. 2, this anti-vibration support member 1 is formed by providing a rubber layer 8 between a pair of metal fittings 6 and 7 which are opposed to each other and have bolts 4 and 5 protruding in opposite directions. There is.

By the way, since the conventional anti-vibration support member 1 is exposed to Shanghai water or water, the metal fittings 6 and 7 are treated with Dacro metal which has excellent corrosion resistance.

However, this dacrometal (a coating formed by bonding metal zinc with a trivalent chromium compound) has a property of having excellent corrosion resistance but low strength.

Therefore, if the Dacro metal layer 9 formed on the surfaces of the metal fittings 6 and 7 is formed on the entire adhesive surface with the rubber layer 8 as in the conventional case, the second
As shown in the figure, there is an inconvenience that the middle part of the Dacro metal layer 9 itself is broken and peeled off from this part.

[purpose of invention]

The present invention has been developed in view of these circumstances, and is capable of preventing the Dacrometal layer, which has weak strength, from breaking and peeling in the middle due to tensile force, etc., and also prevents seawater and water from breaking at the joint between the support member and the rubber layer. It is an object of the present invention to provide a corrosion-resistant anti-vibration support member that prevents seawater or water from entering the structure and has excellent corrosion resistance even when exposed to seawater or water.

[Summary of the idea]

In order to achieve the above object, the corrosion-resistant anti-vibration support member according to the present invention includes a rubber layer provided between a pair of support members facing each other with bolts protruding in opposite directions, and a rubber layer extending in the direction of the outer surface of the support member. In the anti-vibration support member which is extended to cover the outer surface of the support member and is connected by the bolt portion, a Dacro metal layer is formed on the entire surface of the pair of support members, and the support member is attached to the support member through the Dacro metal layer. is covered with a rubber layer, while an exposed surface part without the dacrometal layer is formed on a part of the inner surface of the supporting member surface where tensile force acts, and the exposed surface part is directly adhered to the rubber layer. .

[Example of idea]

Next, one embodiment of the present invention will be described with reference to FIGS. 3 to 5.

The anti-vibration support member 11 is integrally formed with a rubber layer 16 for anti-vibration provided between a pair of support members 14 and 15 facing each other with bolts 12 and 13 protruding in opposite directions. .

The surfaces of the supporting members 14 and 15 are treated with Dacro metal to form a Dacro metal layer 17.

Then, on the surface of the supporting member 14.15, which is in contact with the rubber layer 16, there is provided a double metal layer 17 as shown in FIG.
A plurality of surface exposed portions 18, 18, .

On the other hand, the rubber layer 16 extends toward the bolt protruding surface of the support member 14.15 and covers almost the entire outer periphery of the support member 14.15.

The rubber layer extending to the bolt protruding surfaces of the support members 14 and 15 has a tapered shape that becomes thinner toward the bolt protrusion, and adheres closely to the support member surface to maintain watertightness. Pressing pieces 19,20 are formed to press the supporting members 14,15 inwardly.

This pressure piece 19,20 has radial ribs.

The corrosion-resistant anti-vibration support member 11 having the above structure is connected to the engine by inserting the protruding bolts 12 and 13 into holes 23 and 24 formed in the engine case 21 and steering bracket 22 of the outboard motor body, for example. The steering bracket 22 is attached to the case 21 with a nut, and the rubber layer 16 between the pair of support members 14 and 15 prevents engine rotational vibrations on the engine case 21 side from being transmitted to the hull side.

The anti-vibration support member of the present invention can be used not only in the outboard motor described in the above-mentioned embodiments but also in various types of equipment.

[Effect of idea]

As explained above, according to the present invention, since the Dacrometal layer is formed on the entire surface of the support member, it has excellent corrosion resistance against seawater or water, and a part of the inner surface of the support member surface has excellent corrosion resistance. Since an exposed surface portion without a Dacro metal layer is formed on the support member and is directly bonded to the rubber layer, it is possible to prevent the Dacro metal layer from breaking and peeling in the middle due to tensile force, etc., and furthermore, the entire support member is made of a rubber layer. Since it is covered, it is possible to prevent seawater and water from entering the joint surface between the support member and the rubber layer, which has the effect of preventing peeling of the joint surface.

[Brief explanation of drawings]

Fig. 1 is a cutaway side view of the main parts showing the joint between the engine case of the outboard motor and the steering bracket, Fig. 2 is a cross-sectional view showing a conventional example of the vibration-proof support member, and Fig. 3 is a cross-sectional view of the support member of the present invention. FIG. 4 is a cross-sectional view showing one embodiment, FIG. 4 is a view taken in the direction of arrow A in FIG. 3, and FIG. 5 is an exploded perspective view showing the support member of the present invention, an engine case, and a steering bracket. In the figure, 12.13 is a bolt, 14.15 is a support member,
Reference numeral 16 indicates a rubber layer, 17 indicates a dacrometal layer, and 18 indicates an exposed portion of the support member at the joint surface of the support member.

Claims (1)

[Scope of utility model registration request] A rubber layer is provided between a pair of supporting members facing each other with bolts protruding in opposite directions, and this rubber layer is provided to extend toward the outer surface of the supporting member so as to cover the outer surface of the supporting member. At the same time, in the anti-vibration support member connected by the bolt portion, a Dacro metal layer is formed on the entire surface of the pair of support members, and the support member is covered with a rubber layer via the Dacro metal layer, while a part of the surface of the support member is covered with a rubber layer. A corrosion-resistant anti-vibration support member, characterized in that an exposed surface portion without a dacrometal layer is formed on a part of the inner surface on which tensile force is applied, and the exposed surface portion is directly adhered to a rubber layer.