JPS588633Y2 - motorcycle engine suspension system - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a motorcycle engine suspension system, and improves riding comfort by making it difficult for vibrations and noise generated by the engine to be transmitted to the frame of the vehicle body.

Motorcycles usually have an engine attached to the bottom of a frame with a fuel tank, seat, etc. attached to the top.

Incidentally, since the engine has a structure in which the reciprocating motion of the piston is converted into rotational force, vibrations inevitably occur during operation.

Therefore, in a structure where the engine is simply attached to the frame, there is a problem in that the vibration and noise generated by the engine are transmitted to the frame of the vehicle body, making the ride uncomfortable.

In order to prevent this, various measures have been taken, but the conventional ones have a problem of complicated structures.

The present invention has a simple structure and prevents engine vibration and noise from being transmitted to the frame.

An embodiment of the present invention will be described with reference to the drawings. In FIG. 1, reference numeral 1 denotes a press-molded frame, and a fuel tank and a seat are attached to the upper part of the frame (not shown).

A mounting piece 4 for an engine 3 is supported at the lower part of the frame 1 via a bracket 2 having a structure to be described later.

The mounting piece 4 is provided integrally with the engine 3,
As a result, the engine 3 is held in the frame 1.

A shaft 6 having a rubber material 5 adhered to the outer periphery thereof is mounted on the frame 1, and an arc-shaped elongated hole 7 through which the shaft 6 is inserted is provided in one of the brackets 2.

These constitute a stopper that regulates the rotation angle of the frame 1 and the bracket 2.

As shown in FIG. 2, the bracket 2 has a structure in which shafts 9 and 10 are protruded from the upper and lower parts of a plate 8.
100 is inserted into the rubber bushing 13.14 which is press-fitted into the frame 1 and the mounting piece 4 through the collar 11.12.

15 is a plate body provided with holes 16 and 17;
The tips of the shafts 9 and 10 pass through the holes 16 and 17.

A thread is cut into the tip of the shaft 9, 100, into which a nut 18, 19 is screwed.

As a result, the engine 3 is held in the frame 1.

In this device configured in this way, the engine 3
When the bracket vibrates, this vibration is first absorbed by the torsion of the rubber bushing 14, and the vibrations that are not absorbed here are transmitted to the bracket 2.

The vibration of the bracket 2 is absorbed by the torsion of the rubber bush 13 and is sufficiently damped, so that the slight vibration is transmitted to the frame 1.

Since the plate bodies 15 are attached to the ends of the shafts 9 and 10, the bracket 2 will not fall to the left or right.

The movable range of the bracket 2 is regulated by a stopper formed by the shaft 6' and the elongated hole 7.

Note that the shaft 6 is not provided on the frame 1 as in this embodiment, but is provided on the plate 8, and a long hole 7 through which the shaft 6 is inserted is provided in the frame 1.
Alternatively, it may be provided on the mounting plate 4.

Since the present invention is configured as described above, it is possible to obtain an engine suspension system with a simple structure in which engine vibrations and noise are not transmitted to the frame.

This has the advantage of significantly improving riding comfort.

Additionally, the stopper restricts the rotation angle of the bracket, so it has the advantage of safety.

[Brief explanation of drawings]

FIG. 1 is a front view showing essential parts of an embodiment of the present invention, and FIG. 2 is a sectional view taken along the line 1--2 in FIG. 1...Frame, 2...Bracket,
3...Engine, 4...Mounting piece, 6.
9.10...shaft, 7...long hole, 8.1
5... Plate body, 13.14... Rubber bushing, 18.19... Nut.

Claims (2)

[Scope of utility model registration request] (1) In a motorcycle with an engine attached to the lower part of the frame, a bracket with a shaft protruding from the upper and lower parts of the plate is provided, the upper shaft of the bracket is inserted into the frame, and the lower shaft is the engine mounting part. A bushing is interposed in each insertion part, the tip of each shaft is fixed by a plate, and a rotation angle is provided between the bracket and the frame or engine mounting piece for regulating the rotation angle. Motorcycle engine suspension disorder characterized by a stopper (2) The engine suspension system for a motorcycle according to claim 1, wherein the stopper comprises a shaft and a long hole through which the shaft is inserted.