JPH02127188A - Connecting structure via elastic mount - Google Patents

Abstract

PURPOSE:To transmit a thrust of an outboard motor so efficiently by installing an elastic body part at the outside of an inner member of an elastic mount, while installing a flange part in this elastic body part in the inner member, and constituting it so as to regulate any compressive deformation in this elastic body. CONSTITUTION:When an outboard motor 8 is driven and a thrust works on a connecting part 7 between this motor 8 and a hull 1, an elastic body par 15 in this connecting part 7 compressed and deformed by this thrust. At this time, an intermediate flange part 17 embedded in this elastic body part 15 is connected to an inner member 12 of an elastic mount, so that a deformation value of the elastic body part 15 is regulated, and thereby rigidity in the compression direction comes high, thus transmission of the thrust is efficiently performed. When vertical or longitudinal vibrations works on this connecting part, the elastic body part 15 is extended (shearing) and deformed, but since a recess is formed between the elastic body part 15 and a casing 16, this deformation is promoted, thus the vertical or longitudinal vibrations are effectively absorbed.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a structure for connecting an outboard motor to a hull, for example.

(Prior art) Conventionally, the part connecting the outboard motor and the hull has been
-116597, U.S. Patent No. 2,916,007.

U.S. Patent No. 3,002,489 or U.S. Pat.
As shown in No. 599°594, a structure using an elastic mount made of rubber or the like is known.

JP 58-116597 and U.S. Patent No. 2,916
, 007, a rubber is interposed between the inner collar and the outer collar, and the inner collar is connected to one member and the outer collar is connected to the other member. The structure disclosed in U.S. Patent No. 3002.489 has three rubber pieces interposed between the members connected to each other at the upper and lower parts, and is disclosed in U.S. Patent No. 2,916,007. The structure is one in which a cylindrical rubber is wound around a crossbar that penetrates the other member and is fixed at both ends to one member, and a band-shaped rubber is interposed in a part of one member. be.

(Problems to be Solved by the Invention) By the way, in the connection structure between the hull and the outboard motor, during propulsion, the thrust of the outboard motor can be effectively transmitted to the hull without waste.
The structure should eliminate vibrations in the direction perpendicular to the direction of thrust action, that is, vertically or horizontally. For this purpose, it is preferable that the elastic body has rigid characteristics in the direction of action of thrust and soft characteristics in the direction of action of vibration. I'm trying to make it transform like this.

However, the conventional structure is not sufficient in terms of transmission of thrust and vibration, and there is a need for a connection structure that exhibits higher rigidity in the direction of thrust action and softness in the direction of vibration.

(Means for Solving the Problems) In order to solve the above problems, the present invention provides an elastic mount in which an elastic body section is formed on the outside of an inner member connected to one member to be housed in a casing of the other member. The inner member of the elastic mount is provided with a flange portion in a direction perpendicular to the compression direction, and the surface of the elastic body portion and the inner surface of the casing are brought into partial contact to form a relief portion.

(Function) By forming the flange portion on the inner member, deformation of the elastic body portion in the compression direction is restricted and rigidity is increased, and by forming a relief portion between the surface of the elastic body portion and the inner surface of the casing, the elastic body portion deformation in the elongation direction is promoted, increasing the vibration absorption effect.

(Example) Embodiments of the present invention will be described below based on the accompanying drawings.

Fig. 1 is a diagram showing the rear part of the hull through which the connection structure according to the present invention has been applied, Fig. 2 is an enlarged view of the main part of Fig. 1, Fig. 3 is a sectional view taken along the line A-A in Fig. 2, and Fig. 4 is a further enlarged view of the main parts of Figure 2,
FIG. 5 is a perspective view of the elastic mount.

A stern bracket 2 that forms part of the transom is fixed to the rear rear surface of the hull 1, and a swivel bracket 3 is pivoted to the upper end of the stern bracket 2 on a shaft 4 so as to be movable up and down. An outboard motor 8 is attached to the top and bottom of the swivel shaft 5 provided at the top and bottom of the swivel shaft 5 via connecting portions 6.7.

Since the connecting parts 6.7 have substantially the same structure, the lower connecting part 7 will be explained.

The connecting portion 7 rotatably connects the center portion of the housing 10 to the swivel shaft 5, and this housing! A pair of elastic flats 11.11 are arranged on the left and right sides of the 0, and the outboard motor 8 is connected to the elastic mounts 11.

That is, the elastic mount 11 is fixed to the housing 10 side by inserting a bolt 13 into a cylindrical inner member 12 and tightening a nut 14, and on the outside of the inner member 12 there is a substantially rectangular elastic mount made of rubber or the like. The body portion 15 is integrally formed by baking or the like, and the elastic body portion 15 is housed in a casing 1B provided on the outboard motor 8, thereby connecting the outboard motor 8 to the hull 1.

Further, a flange portion 17 extending in a direction perpendicular to the direction in which thrust acts (left-right direction in the figure) is provided at the intermediate portion of the inner member 12, and this flange portion 17 is connected to the elastic body portion 15.
I try to cover it with this. On the other hand, a recess 18 is formed around the inner member 12 on the axial end surface of the elastic body part 15, and a protrusion 19 is formed on the inner peripheral surface of the casing 16, so that the surface of the elastic body part 15 and the casing 16 are formed. As shown in FIG. 5, the protrusion 19 and the opposing portion 19a are partially in contact with each other, so that a relief portion 20 is formed between the surface of the elastic body portion 15 and the inner circumferential surface of the casing 16.

When the outboard motor 8 is driven and a thrust is applied to the connecting portion 7, the elastic body portion 15 is compressively deformed by the thrust, but since the flange portion 17 is interposed in the middle, the deformation is prevented. The amount is regulated, the rigidity in the compression direction is high, and the thrust is transmitted efficiently.Also, when vertical or horizontal vibrations act, the elastic body part 15 is stretched (sheared) deformed, but the elastic body part 15 is Since the relief portion 20 is formed between the body portion 15 and the casing 16, the deformation is facilitated and vibrations in the vertical direction or the horizontal direction are effectively absorbed.

FIG. 6 is a half-section plane cross-sectional view of the elastic mount housed in a casing with a flat inner peripheral surface, and FIG. 7 is a perspective view of the elastic mount.
5 The upper and lower surfaces of the surface are flat, and there are protrusions 21 on the left and right sides.
, and a relief part 20 is formed between these protrusions 21.

By doing so, the rigidity in the vertical direction can be increased and the rigidity in the horizontal direction can be decreased.

8 to 12 are perspective views showing another embodiment of the elastic mount 11 which has a flat inner surface and is housed in the casing 16. In the embodiment shown in FIG. The protrusions 21 are formed and the protrusions 21 on the upper and lower surfaces are formed.
The area is made large so that it exhibits softer characteristics in the vertical direction than the elastic mount 11 shown in FIG. 7, and in the embodiment shown in FIG. A portion 21 is formed to exhibit soft characteristics in the vertical direction as well.

Here, since the elastic mount 11 shown in FIGS. 7 to 9 has a symmetrical top and bottom shape, assembly and positioning are easy, and no bending moment is applied to the inner member 12.

The elastic mount 11 shown in FIG. 10 has an elastic body section 15 composed of an upper half section 15a, a lower half section 15b, and an intermediate section 15c.
For the upper half 15a, a protrusion 21 is formed on the surface on which the thrust acts, and a protrusion 21 that receives its own weight is also formed on the upper surface of the upper half 15a.
and relief portions 20 are formed, and the left and right end surfaces of the lower half portion 15b are formed as protrusions 21 that receive lateral vibrations. Further, in the elastic mount 11 shown in FIG. 11, the dimensions of the upper half 15a of the elastic body part 15 are larger than the lower half 15b both vertically and horizontally, and a protrusion 21 that receives thrust and vibration is formed in the upper half 15a.
Further, in the elastic mount 11 shown in FIG. 12, the elastic body portion 15 has a cylindrical shape as a whole, and a recess 25 separate from the recess 18 is formed on the end surface on which thrust acts.

(Effects of the Invention) As explained above, according to the present invention, an elastic body part such as rubber is provided on the outside of the inner member of the elastic mount, and a flange part embedded in the elastic body part is provided in the inner member. Since the compressive deformation of the elastic body is restricted, thrust can be efficiently transmitted when used, for example, at a connection between an outboard motor and a ship's hull.

Further, since a relief portion is formed between the surface of the elastic body portion and the inner circumferential surface of the casing, vibrations in the vertical direction or the horizontal direction can be easily absorbed.

[Brief explanation of drawings]

Fig. 1 is a diagram showing the rear part of the hull to which the connection structure according to the present invention is applied, Fig. 2 is an enlarged view of the main part of Fig. 1, Fig. 3 is a sectional view taken along the line A-A in Fig. 2, and Fig. 4 is a further enlarged view of the main parts of Figure 2,
FIG. 5 is a perspective view of the elastic mount, FIG. 6 is a half-section plan view similar to FIG. 3 showing another embodiment, and FIGS. 7 to 12 are perspective views of the elastic mount according to another embodiment. . In addition, in the drawing, 1 is the hull, 5 is the swivel shaft, 6.7
1 is a connecting portion, 8 is an outboard motor, 11 is an elastic mount, 12 is an inner member, 15 is an elastic body portion, 16 is a casing, 1f is a flange portion, 19.21 is a protrusion, and 20 is a relief portion.

Claims (1)

[Claims] In a structure in which two mutually separated members are connected via an elastic mount, this elastic mount has an elastic body part made of rubber etc. formed on the outside of an inner member connected to one member, and this elastic body part is connected to the other member. The inner member is housed in the casing of the member, and furthermore, the inner member is integrally formed with a flange portion that is embedded within the elastic body portion, and the surface of the elastic body portion and the inner surface of the casing form a relief portion for exerting a buffering function. A connection structure via an elastic mount, characterized in that the parts are in contact to form a connection structure.