JPH0437238Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a cooling fin vibration isolator for preventing vibration of the cooling fin of an air-cooled engine.

(Prior Art) As is well known, air-cooled engines have a large number of cooling fins protruding from the outer circumferential surface of the cylinder of the engine body to dissipate heat. The cooling fins vibrate,
It may make a vibrating sound.

For this reason, conventionally, it has been common practice to install a rubber block by inserting it between the tips of the cooling fins, which tend to vibrate, in order to prevent the cooling fins from vibrating.

In addition, as described in Japanese Patent Application Laid-Open No. 61-291750, the main body is inserted through the four corners of the cooling fin, the inner surface of the cylinder cover is brought into contact with the tip of the cooling fin, and both ends are connected between the columns. A vibration isolating device has been proposed that is screwed to the

(Problems to be solved by the invention) Among the conventional vibration isolators mentioned above, the former is designed to prevent the rubber blocks from moving or loosening from between the cooling fins due to engine vibration or rubber deterioration. , the anti-vibration effect may be inferior. Further, since the blocks are fitted between the individual cooling fins, it takes time to attach the blocks to the cooling fins, resulting in poor workability and poor appearance.

In addition, in the latter method, the cylinder cover is screwed to both ends of the cooling fin by penetrating it, resulting in a complicated structure and poor workability.In addition, the cylinder cover is simply attached to the cooling fins other than the four corners. Therefore, there is a possibility that vibration of the cooling fins cannot be reliably prevented.

This idea was made in view of the above points, and it is easy to attach to the cooling fin, has good workability,
Furthermore, once attached to the cooling fin, it will not move over a long period of time, and there is no risk of degrading the vibration-proofing effect.Furthermore, when installed, it looks integrated with the cooling fin, giving it an excellent aesthetic sense. The purpose of this invention is to provide a vibration isolating device that can reliably prevent vibrations.

(Means for Solving the Problems) The gist of this invention for achieving the above-mentioned purpose is to provide a cooling fin vibration isolator that is fitted across a series of cooling fin tips. ,
It consists of an elastic plate having a certain thickness and a rigid cover having a plurality of protrusions integrally fitted on the outer surface of the elastic plate and protruding at intervals. Long grooves into which the tips of the cooling fins can be fitted, and long grooves into which the protruding strips of the rigid cover can be fitted are formed alternately at intervals.

(Function) According to the cooling fin vibration isolator of this invention, each long groove on the inner surface side of the elastic plate is inserted into the tip of the cooling fin, so that the elastic plate can be straddled in a series between the tips of the cooling fins. By fitting the protruding strips of the rigid cover body into the long grooves on the outer surface of the elastic plate body and integrally fitting the rigid cover body onto the elastic plate body, the cooling fins of the elastic plate body are The inserted part between the tips is pushed out by the protruding strips of the cover body and crimped onto the tip of the cooling fin, so it does not move, and there is no need for work such as screwing, making installation easy. be.

(Example) Hereinafter, an example of this invention will be described based on the drawings.

1 to 4 show an embodiment of the cooling fin vibration isolator of the present invention. Figure 1 is a perspective view of the elastic plate.
The elastic plate 1 has a certain thickness (for example, about 10 mm)
It is made of rubber, etc., which has a rectangular shape and is heat and weather resistant. On one surface (inner surface side) of this plate 1, a large number of long grooves 2 into which the tips of cooling fins B to be used later can be inserted are provided at intervals in the width direction. In addition, on the other surface (outer surface side) of the plate body 1,
A large number of long grooves 3 into which projecting strips 5 to be described later can be inserted,
It is opened at an intermediate position of the long groove 2. That is, these long grooves 2 and 3 are alternately provided at intervals on the inner and outer surfaces of the plate 1. The bottoms of the long grooves 2 and 3 are each formed round, and the inner groove opening 2a is slightly wider outward than the outer groove opening 3a. FIG. 2 is a perspective view of a rigid cover body 4, which has a rectangular shape corresponding to the elastic plate body 1 and is made of a metal material such as aluminum or a synthetic resin material with heat resistance and weather resistance. .
On the inner surface of the cover body 4, a large number of protruding pieces 5 each having a rounded tip are protruded at intervals and at positions corresponding to the long grooves 3. Further, on the outer surface of the cover body 4, a cooling fin B is provided at a position corresponding to the long groove 2, in other words, on an extension line of the cooling fin B to be removed later.
A protrusion 6 having a shape similar to the tip is provided in a protruding manner. Further, both ends of the cover body 4 are each bent into a substantially L-shaped cross section to attach the mounting seat 7 to the cooling fin B.
Each mounting seat 7 has a screw hole 7a at the appropriate place.
is drilled. The elastic plate body 1 and the rigid cover body 4 can be manufactured easily if they are each continuously formed into a band shape by extrusion molding and cut into predetermined lengths.

The vibration isolator of the present invention is constructed by combining the elastic plate body 1 with the above-described structure and the rigid cover body 4.Hereinafter, the manner in which this vibration isolator is attached to the cooling fin will be explained based on the drawings. . FIG. 3 is a left side view of the vibration isolator attached to the cooling fin of a two-wheeled vehicle engine, and FIG. 4 is a sectional view taken along the line -- in FIG. 3. In the figure, A is a cylinder of an engine, and a large number of cooling fins B are juxtaposed and protruded from the outer peripheral surface of the cylinder A. C
is the air duct attached to the cylinder head,
B' is the cooling fin on the cylinder head side, D is the carburetor, and E is the crank chamber.

Further, in the left and right cooling fin B groups of the cylinder A, flanges 8 projecting upward or downward are integrally formed at the tips of the cooling fins B at both the upper and lower ends.

By the way, the elastic plate 1 is fitted by fitting the long grooves 2 on its inner surface into the tips of the cooling fins B on the left and right sides, respectively, so as to straddle the tips of the cooling fins B in a series. In this state, the protruding strips 5 on the inside of the rigid cover body 4 are fitted into the respective long grooves 3 on the outer surface side of the elastic plate body 1, and the rigid cover body 4 is integrally fitted onto the elastic plate body 1. . As a result, the portion 1' (see FIG. 4) inserted between the tips of the cooling fins B of the elastic plate 1 is pushed out to both sides by the protruding strips 5 of the cover body 4, and is crimped to the tips of the cooling fins B. and installed. Although this is sufficient to attach the elastic plate body 1 and the rigid cover body 4 to the cooling fin B, here, the mounting seats 7 at both ends of the cover body 4 are further joined to the flanges 8 at both ends of the cooling fin B. It is fixed by a set screw 9 as a stopper. For this reason, the cooling fin B
The rigidity of the group is further improved, and since the insertion portion 1' of the elastic plate 1 is strongly pushed into the cooling fin B, vibration of the cooling fin B is more reliably prevented. Furthermore, although the projections 6 are provided in parallel with the cooling fins B in this embodiment, the invention is not limited to this and may be omitted.

(Effects) As explained above, since the cooling fin vibration isolator of this invention has the above-described configuration, it has the following effects.

(1) Easy and reliable installation on cooling fins;
Workability is good and installation work can be completed in a short time.

(2) The inserted portion of the elastic plate between the tips of the cooling fins is strongly crimped to the tips of the cooling fins by inserting the protruding strips of the rigid cover into the long grooves. Even if the rubber etc. deteriorate, it will not move, and the rigidity of the entire cooling fin will be improved, and vibrations will be reliably prevented for a long period of time.

(3) When installed, it is visually integrated with the tip of the cooling fin, giving it an excellent aesthetic sense.
In particular, as in the embodiment, if a protrusion having the same shape as the tip of the cooling fin is provided on the surface (outer surface) of the rigid cover body, the sense of unity with the cooling fin will be further improved.

[Brief explanation of the drawing]

1 to 4 show an embodiment of the cooling fin vibration isolator of this invention, and FIG. 1 is a perspective view of an elastic plate;
FIG. 2 is a perspective view of the rigid cover body, FIG. 3 is a left side view of the vibration damping device attached to the cooling fin of a two-wheeled vehicle engine, and FIG. 4 is a sectional view taken along the line -- in FIG. 3. DESCRIPTION OF SYMBOLS 1... Elastic plate body, 2, 3... Long groove, 4... Rigid cover body, 5... Projection piece, 6... Protrusion part, 7...
Mounting seat, 7a...screw hole, 8...flange, 9...
...Set screw (stop), B...Cooling fin.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A cooling fin vibration isolator that is fitted across a series of tip portions of a large number of cooling fins that are juxtaposed and protruding from the outer peripheral surface of a cylinder of an air-cooled engine body, It consists of an elastic plate having a certain thickness and a rigid cover having a plurality of protrusions integrally fitted on the outer surface of the elastic plate and protruding at intervals. An air-cooled engine characterized in that long grooves into which the tips of the cooling fins can be fitted, and long grooves into which the protruding strips of the rigid cover body can be fitted are formed alternately at intervals on the outer surface of the long grooves. Cooling fin vibration isolator. (2) A utility model according to claim 1, wherein flanges are integrally provided at both ends of the cooling fin, and both ends of the rigid cover body are fixed to the flanges via fasteners. Cooling fin vibration isolator for air-cooled engines.