JPH0648122Y2 - Engine cover opening and closing device - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] In this invention, a cylinder, an ignition coil, and in some cases, a high pressure cord, a cover made of a flexible material that also covers an ignition plug is attached to a set screw. By installing it on the cylinder so that it can be opened and closed without using a fastener, it is possible to remove foreign matter such as leaves, branches, mud, dust, and gravel that are sucked into the fan case by driving the cooling fan. Accordingly, the present invention relates to a cover opening / closing device for an engine, which is easily removed and does not hinder the driving and cooling effects of the engine.

[Conventional technology]

As shown in FIG. 4, the cover A in the conventional engine is fixed to the cylinder 1 and the upper end of the fan case 2 by fastening members 3 such as bolts or tacks, and the cooling fan in the fan case 2 is fixed. The pressurized air generated in 4 flows in the direction of the arrow inside the cover A, and the cylinder 1, the ignition coil 5,
When the high-voltage cord 6 and the like are cooled, they flow out to the outside of the covering A.

[Problems to be solved by the device]

Cylinder 1, ignition coil 5, high-voltage cord 6 etc. are foreign matter such as plant leaves, branches, mud, dust or gravels that are sucked into the fan case 2 from the outside by the rotation of the cooling fan 4 accompanying the engine drive. Intrudes and adheres to each other to cause clogging, and when stored in a barn, warehouse, etc. for a long period of time, "spider" nests and the like interfere with the cooling effect, and When the engine is in poor condition or severe, it may cause seizure in the engine, so it is necessary to occasionally inspect, clean, and maintain the cylinder 1, ignition coil 5, high-voltage cord 6, etc. in order to avoid such a situation. However, as described above, since the covering A is fixed to the cylinder 1 and the fan case 2 with the fasteners 3 and 3, a jig for removing and mounting the covering A is required. As a result, there is a problem that the fasteners 3, 3 may be lost.

This invention has been proposed by paying attention to the above-mentioned problems, and the purpose thereof is to attach the cover to the fan case so that it can be opened and closed without using a fastener such as a set screw. Then, the foreign matter and "spider" webs sucked into the fan case by the rotation of the cooling fan can be easily removed, and the inspection can be performed easily.
It is an object of the present invention to provide an engine cover opening / closing device that does not hinder the driving and cooling effects of the engine by performing cleaning and maintenance.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, a cover opening / closing device for an engine according to the present invention includes a disengagement member protruding above an upper end of a cover for covering a cylinder, an ignition plug, etc. above a fan case for housing a cooling fan. In a cover opening / closing device for an engine that is releasably engaged with a through hole of a fin of a cylinder, a bulging portion is projected integrally with an engaging shaft portion at an upper end of a fan case, and a swelling portion is provided around an outer peripheral edge of the engaging shaft portion. Movably fitted, and having the same shape and size as the bulging portion and engaging with the engaging shaft portion,
An elongated through hole that is held in a substantially horizontal direction is formed in a lower portion of a cover made of a flexible material.

[Action]

In this invention, when the covering body is assembled to the fan case, after the through hole is made to match the bulging portion, the vicinity of the through hole is forcibly pressed toward the engaging shaft portion side so that the through hole itself is inserted. When the cover is fitted around the outer peripheral edge and then the cover is rotated around the engaging shaft as a fulcrum, the through hole is held in a substantially horizontal direction. Since the cover is held, and thus the cover is rotatably attached to the fan case, the cover can be easily opened and closed with respect to the cylinder, the ignition plug, etc. through the through hole with the engaging shaft portion as a fulcrum.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 3. A crankcase connected to a recoil starter R is described below.
A cooling fan in which a magnet M is integrally connected to an end portion (right end in FIG. 1) of a crankshaft S rotatably supported in the crankcase 11 while the cylinder 12 is integrally assembled above An air intake port i is formed in one side (left side in FIG. 1) of the fan case C that fixes F and covers the cooling fan F, and a second side is formed in the upper end of the other side (right side in FIG. 1). As shown in FIG. 3 and FIG. 3, a plurality of circular engagement shaft portions 13 and elliptical bulging portions 14 are integrally formed, and through holes h of the same shape as the bulging portions 14 and of the same size and elongated shape are formed. Is a cover material B made of a flexible material such as a synthetic resin and having an inverted U-shaped cross section.
To be drilled below. However, as will be described later, this through hole h
After engaging with the engaging shaft portion 13, it can be held in a substantially horizontal direction as seen in FIG. At the time of assembling the cover B to the fan case C, the through hole h is aligned with the bulging portion 14, and then the member is pressed in the direction of arrow d in FIG. After fitting, the cover B is rotated toward the front or rear with respect to the paper surface, and the bulging portion 14 and the through hole h are held in an orthogonal state as shown in FIG. B can be rotatably attached to the fan case C, and a disengager 15 with a claw piece p is provided near the tip of the cover B on the cylinder 12 side. It can be freely engaged with and disengaged from a through hole q formed on one side of the fin n. In the figure, 16 is an ignition coil, 17 is an iron core, 18
Is a high pressure cord, 19 is a plug cap, and 20 is a spark plug.

In the present invention, when the crankshaft S is rotated by the operation of the recoil starter R to start the engine, the pressurized air generated by the rotation of the cooling fan F fixed to the crankshaft S is the fan case. After flowing through the inside of C in the direction of arrow y to cool the cylinder 12 and the ignition coil 16, it flows out to the outside. However, the leaves, branches, dust, gravels, and other contaminants (not shown) sucked into the fan case C from the air intake port i by the flow of the pressurized air in the fan case C, the cylinder 12, Ignition coil 16, high-voltage cord 18, adhered / deposited on the inside of coating B, etc. Therefore, when placed in a clogged state depending on the location, the smooth flow of pressurized air is hindered and the cylinder 12, When the ignition coil 16 is likely to be overheated,
The claw p of the engagement / disengagement member 15 of the cover B is disengaged from the through hole q of the fin n, and the cover B is rotated about the engagement shaft portion 13 in the direction of arrow X _{1 in} FIG. By holding the cylinder 12, the ignition coil 16, the high-voltage cord 18, etc., the cylinder 12, the ignition coil 16, the high-voltage cord 18, etc. can be easily inspected, and the operator does not feel any trouble.

〔effect〕

Since the present invention has the above-mentioned structure, a plurality of through holes h having the same shape and the same size as the bulging portion 14 and the same elongated shape are formed in the lower portion of the cover B made of a flexible material. Since each of h is rotatably fitted to the outer peripheral edge of the engagement shaft portion 13 on the fan case C side, both the through hole h and the bulging portion 14 are vertically moved, for example, in FIG. The cover B can be easily assembled on the fan case C side by aligning them along the side, and after the assembly, the cover B can be removed only when they are aligned, but the through hole h is set in the vertical direction. In other cases, that is, in the substantially horizontal direction, the through hole h and the engagement shaft portion 13 are always held in engagement with each other, so that the cover B unexpectedly disengages from the fan case C. Since the through hole h is slender and the engaging shaft portion 13 is movable, there is no fear that the cover h The opening is sufficient, and further, a fastening tool such as a bolt or a tack for fastening the cover B to the cylinder side as in the conventional case, and a tool for loosening and fastening these are not necessary, and the fastening tool The cylinder of the cover B does not have to be complicated and the structure itself is not particularly complicated.
It is easy to attach and detach to and from the 12 side.

Since the cover is movably supported by an elongated through hole formed in a part thereof with respect to the engaging shaft formed on the side edge of the fan case, the periphery of the ignition coil, which is the cover, is enlarged when opened. It can be exposed, and the ignition coil can be easily inspected and cleaned.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view with a part of the engine equipped with the product of the present invention cut away, FIG. 2 is an enlarged cross-sectional view of a main part with a part of the line II-II of FIG. 1 cut away, and FIG. FIG. 4 is an enlarged arrow view of the main part of the line III-III in FIG. 4, and FIG. 4 is a vertical cross-sectional view in which a part of an engine equipped with a conventional type cover is cut away. B: coating, C: fan case, F: cooling fan, h, q ... through holes of coating and fin, n ... fin, 12 ... cylinder, 13 ... engaging shaft , 14 bulge, 15 ...... disengagement, 16 ...... ignition coil

Claims (2)

[Scope of utility model registration request] 1. A disengagement member projecting from an upper end of a cover for covering a cylinder, a spark plug and the like is releasably engaged with a through hole of a fin of a cylinder above a fan case for accommodating a cooling fan. In a cover opening / closing device for an engine, while a bulging portion is projected integrally with an engaging shaft portion at an upper end of a fan case, the bulging portion is rotatably fitted to an outer peripheral edge of the engaging shaft portion, and Same shape, same size and after engaging with the engaging shaft,
A cover opening / closing device for an engine, in which an elongated through hole held in a substantially horizontal direction is formed in a lower part of the cover made of a flexible material. 2. The cover is rotated about the engaging shaft as a fulcrum,
The cover opening / closing device for an engine according to claim 1, wherein the cylinder and the ignition coil are faced open.