JPH0117654Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fan cover device for an internal combustion engine with a recoil starter that is vibration-proofly supported against a side wall of the internal combustion engine.

When starting the recoil starter of a conventional internal combustion engine with a recoil starter by operating its rope pulling device, the fan cover provided on the side wall of the engine deforms in the rope pulling direction, causing interlocking movement between the engine shaft and the recoil starter. There are problems in that the engaging portions are misaligned and the assembly position of the fan cover relative to the engine body is displaced.

Therefore, the present invention was devised to solve the above-mentioned conventional problems, and when an internal combustion engine with a recoil starter is started by a rope, misalignment of the axis of the interlocking engagement part between the recoil starter and the engine shaft occurs. It is an object of the present invention to provide a fan cover device that is equipped with a structure that prevents cracks from occurring in the rubber-like elastic body used for this purpose.

That is, in the fan cover device for an internal combustion engine with a recoil starter of the present invention, a fan cover having a recoil starter rope outlet is fitted onto the side wall of an internal combustion engine with a recoil starter along the opening edge of the fan cover. The fan cover is mounted in a vibration-proof manner through a rubber-like elastic material, and a recess is formed at the part of the intake pipe protruding from the side wall of the engine that abuts the fan cover, and a part of the opening edge of the fan cover is inserted into the recess. It is characterized by being fitted and engaged through a rubber-like elastic material attached to the edge of the cover.

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of the essential parts of a fan cover device for an internal combustion engine with a recoil starter in an embodiment of the present invention, and FIG. Figure 3 is an enlarged cross-sectional view of the main part of the vibration-proof attachment part of the fan cover to the engine side wall in Figure 1. Figure 4 is a cross-sectional view of the main part of the contact area between the intake pipe and the fan cover. It is an enlarged perspective view.

First, in an internal combustion engine having a recoil starter, a flywheel equipped with a cooling fan and a recoil starter are provided on the engine shaft (not shown), and a rope pulling device 2 for the recoil starter is mounted on the engine side wall 1. A fan cover 3 having an opening through which a rope passes through is attached with mounting bolts 4 as shown in FIG. A rubber-like elastic material 5 is inserted between the fan cover 3 and the mounting bolt 4 screwed into the engine side wall 1, as shown in FIG. It is installed.

As described above, by attaching the fan cover 3 to the engine side wall 1 with the mounting bolts 4 via the rubber-like elastic materials 5 and 6, the fan cover resists the rope pulling force by the rope pulling device 2 of the recoil starter. 3 is deformable in the direction of arrow D in FIG.

Furthermore, an intake pipe 7 protruding from the engine side wall 1
As shown in FIGS. 2 and 4, a recess 7A is formed at the part where the fan cover 3 contacts, and a rubber-like elastic material 5 attached to the edge of the fan cover is inserted into the recess 7A. , a part of the opening edge of the fan cover 3 is fitted and engaged.

Therefore, in the cover device for an internal combustion engine with a recoil starter of the present invention, even if the fan cover receives a pressing reaction force and a relative reaction force from the engine body when the recoil starter rope is started, the fan cover does not move in the direction in which the rope is pulled. Although it is deformable, it returns to its original state after the rope is operated by the action of the rubber-like elastic material, which prevents misalignment of the interlocking engagement part between the recoil starter and the engine shaft. can. Further, the elastic body supporting the fan cover deforms against the rope tensile force, but if the elastic body deforms too much, it may cause cracks in the rubber. However, in the present invention, by configuring the portion where the intake pipe contacts the fan cover as described above, it is possible to prevent the rubber-like elastic body from deforming too much and prevent the occurrence of cracks in the rubber. be.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a main part of a fan cover device for an internal combustion engine with a recoil starter according to an embodiment of the present invention, FIG. 3 is an enlarged cross-sectional view of the main part of the vibration-proof mounting portion of the fan cover shown in FIG. 1 on the engine side wall portion, and FIG. 4 is an enlarged perspective view of the intake pipe. 1... Engine side wall, 2... Rope pull-out device, 3
...Fan cover, 4...Mounting bolts, 5, 6
...Rubber-like elastic material, 7...Intake pipe, 7A...Recessed portion with which the rubber-like elastic material comes into contact.

Claims (1)

[Scope of utility model registration request] A fan cover having a rope outlet for the recoil starter is attached to the side wall of an internal combustion engine with a recoil starter in a vibration-proof manner via a rubber-like elastic material fitted along the opening edge of the fan cover. A recess is formed at the portion of the protruding intake pipe that abuts the fan cover, and a part of the opening edge of the fan cover is fitted into the recess through a rubber-like elastic material attached to the edge of the fan cover. A fan cover device for an internal combustion engine with a recoil starter.