JPH0327384Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to an engine cover that is attached to the cylinder of an inverted engine of a hand-held brush cutter.

[Conventional technology]

Generally, hand-held brush cutters are constructed of a long body with a straight line between the engine and the rotary blade, so when starting the engine or refueling at the beginning of use, the brush cutter must be placed on the ground. This will be done in the same condition. For this reason, conventionally, although not shown, a plug is inserted into the bottom side of the engine body when the brush cutter is placed on the ground in an inverted type, that is, in an upside-down position with the cylinder facing down. To prevent the engine from contacting the ground directly and being damaged, attach a separately formed stand (base plate) or plug guard to the bottom of the engine side when the engine touches the ground, so that the engine does not come into contact with the ground and is damaged. Even when the plug is placed, there is a space between the plug and the ground, which prevents the plug from being damaged. The rotating blade is protected by a blade cover.

[Problem that the invention attempts to solve]

Due to the above-mentioned configuration, the following problems have arisen in conventional plug protection measures for brush cutters.

(1) Plug protection means such as the stand (base plate) attached to the engine body and the plug guard are formed separately from the engine opening member, so their manufacturing and installation work is performed as described above. This had to be done separately from the engine-related parts, which increased the cost of the brush cutter.

[Means for solving problems]

This invention solves the problems of the prior art described above, and provides an engine cover for a brush cutter that can reduce costs by integrally molding the protection means for the plug with the engine-related components. It is in. The feature of this engine cover is that an inverted engine is mounted on the rear end, and a handle rod for manual operation is attached to the connecting rod on the front end into which a rotary blade that rotates due to the driving force of the engine is fitted. In the brush cutter, a base protrusion is integrally formed on the bottom surface of the cover body of the engine cover that covers both sides and the bottom of the cylinder of the engine, and the tip of the plug that passes through the plug hole provided in the cover body, The reason is that the base projection is located above the bottom surface of the base projection.

[Effect]

When starting to use the brush cutter with the above configuration, when starting the engine or refueling the engine, do so with the brush cutter placed on the ground. Since the base protrusion is integrally molded, the plug inserted into the plug hole located from one end of the bottom surface, including a part of the base protrusion, to the surrounding surface will An optimal space zone is formed between the belt and the ground, thereby reliably preventing damage and accidents caused by contact with the ground.
In addition, since the above-mentioned base protrusion is integrally molded with the engine cover, even if it is subjected to vibrations due to long-term use of the brush cutter, there will be no change in the arrangement with the engine-related parts or misalignment. There is no. Therefore, when the brush cutter starts to be used or when its use is interrupted, the stability of the brush cutter placed on the ground can be maintained permanently.

〔Example〕

Hereinafter, embodiments of this invention will be described based on the accompanying drawings.

1 and 2 show an embodiment of this invention. In this embodiment, a rotary blade 11 which is rotated by the driving force of an engine 3 (to be described later) via a bearing or the like is placed at the front of a connecting rod 9 formed in a straight elongated body, and is rotatable in the horizontal direction. A handle rod 15 with a handgrip 17 for manual operation and a shoulder hanger 19 that serves as a locking body for a band (not shown) are mounted on the rear outer periphery of the connecting rod 9, and In the bush cutter 1 constructed in this manner, an engine 3 having a fuel tank 7 mounted on the upper part thereof is disposed at the rear end of the connecting rod 9 so as to be able to transmit rotation to the connecting rod 9, and a plug described later is used. 27
The engine cover 21, which forms a protection means, is constructed as follows. That is, as clearly shown in FIG. 2, when the engine cover 21 is attached to the cylinder 5a of the engine body 5, it is connected to the cover body 21a that covers the outer shell of the cylinder 5a and to the engine body 5. The sleeve cover 21a covers related members (not shown) and is formed into a hollow cup shape.

On the bottom surface of the cover body 21a, which becomes the bottom part when the engine cover body 21 is in use and is attached to the cylinder 5a of the engine body 5, there are a pair of left and right base protrusions 2 having a height in the vertical direction.
3 are integrally molded. And this base protrusion 2
At a position extending from one end of the bottom of the cover body 21a including a part of the cover body 21a to the circumferential surface of the body 21a adjacent to this bottom surface, there is a substantially circular shape that allows a plug 27 to be inserted into and removed from the cylinder 5a of the engine body 5. A plug hole 25 is formed. Note that 27 shown in FIG. 2 is a cap 29 that is removably screwed into a plug screw hole (not shown) in the upper part of the cylinder 5a from the plug hole 25 when the engine cover 21 is attached to the cylinder 5a of the engine body 5. This is a plug.

Engine cover 21 of the embodiment with the above configuration
When starting the engine 3 or refilling the fuel tank 7 at the beginning of use of the brush cutter 1 equipped with I will do it. In this case, since a base protrusion 23 of a predetermined height is integrally molded on the bottom surface of the main body 21a of the engine cover 21, which becomes the bottom surface during use, the engine 3
Even if the cover body 21a is placed on the ground, the plug hole 2 of the cover body 21a
Since the plug 27 whose part is exposed from the plug 27 forms an initially optimal space zone with the ground, it is possible to reliably prevent damage accidents caused by contact with the ground. I can do it.

Furthermore, since the base protrusion 23 is integrally molded on the bottom surface of the cover body 21a, it is possible to secure the brush cutter 1 to the hanger 19 with a back strap (not shown) and to hold the brush cutter 1 in the grip portions 17, 17 of the handle rod 15. Even if the brush cutter 1 is continuously subjected to vibrations while being used for a long period of time, the arrangement of the brush cutter 1 with the engine-related components will not change or misalignment will occur. Therefore, when starting or discontinuing use of the brush cutter 1,
It is possible to smoothly and easily maintain stability when placed on the ground. At this time, the rotary blade 11 rotatably attached to the front part of the connecting rod 9 is protected from contacting the ground by a blade cover 13 attached to a part of the connecting rod 9 near this position. Therefore, there is an advantage that the entire main part of the brush cutter 1 can be stably held in a hollow position where it is not in contact with the ground.

[Effect of idea]

According to the present invention, when the brush cutter is placed on the ground,
The above-mentioned base protrusion forms an optimal airspace zone between the ground and the plug, eliminating accidents that damage the above-mentioned plug, thereby increasing the safety level of the brush cutter. This has the effect of reducing the cost of the hair removal machine.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a brush cutter equipped with an engine cover as a plug protection means according to an embodiment of the invention;
FIG. 2 is a partially longitudinal cross-sectional view showing the structure of the engine cover and the arrangement of the plug inserted into the engine body. DESCRIPTION OF SYMBOLS 1... Brush cutter, 3... Engine, 5... Engine body, 9... Connecting rod, 11... Rotating blade, 15...
...Handle rod, 19...Hanger, 21...Engine cover, 21a, 31a...Cover body, 2
3, 35... Base protrusion, 25... Plug hole, 2
7...Plug, 31...Fan cover.

Claims (1)

[Scope of utility model registration request] An inverted engine 3 is mounted on the rear end, and a rotary blade 11 that rotates by the driving force of the engine 3 is mounted on the front end.
A handle rod 1 for manual operation is attached to the connecting rod 9 into which the
5, a base protrusion 2 is provided on the bottom surface of the cover main body 21a of the engine cover 21 that covers both sides and the bottom of the cylinder 5a of the engine 3.
3 are integrally molded, and the tip of a plug 27 that passes through the plug hole 25 provided in the cover body 21a is
An engine cover for a brush cutter, characterized in that it is provided above the bottom surface of the base projection 23.