JPH0755867Y2 - Small engine work machine - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a small engine working machine,
More specifically, the present invention relates to improvement of engine working machines such as ridge mowers and hedge trimmers that perform hand-held work.

[Prior art and problems to be solved]

2. Description of the Related Art Conventionally, small-engine working machines such as ridge mowers and hedge trimmers that perform hand-held work have been widely used because they can easily perform required work.

By the way, among such engine working machines, for example,
The ridge mower is a trimming blade that extends in front of the equipment body by tilting and fixing the handle installed in the equipment body equipped with the engine at a desired angle and holding it with the left hand and operating the throttle lever with the right hand. It is configured to reciprocate the mechanism and pull the diagonally backward to perform ridge cutting work.
There are points to be improved in work such as the tip of the trimming blade gets caught on the ground during towing and smooth work cannot be performed, and the resistance when caught causes the trimming blade to jump and the cutting surface to become uneven. However, when working around a greenhouse, problems such as damage to the greenhouse due to the tip of the trimming blade have been pointed out.

[Means for solving problems]

Therefore, in this invention, the engine mounted on the working machine main body drives the trimming blade mechanism in the front part of the main body and holds the handle to perform hand-held work. By arranging a circular sled member and attaching it so that it can be moved and adjusted along the longitudinal direction of the trimming blade mechanism, the tip of the trimming blade can be caught or jumped up in the ground no matter which direction it is pulled. It is designed so that smooth work can be carried out.

[Action]

In the small engine working machine according to the present invention, the circular sled member functioning as a spacer is attached between the lower end of the trimming blade mechanism and the ground so that it can be moved and adjusted. It is possible to avoid inconvenience.

〔Example〕

Next, a ridge mower will be illustrated as a preferred embodiment of the small engine working machine according to the present invention, and will be described in detail below with reference to the accompanying drawings.

Referring to FIG. 1, a ridge mower according to the present invention converts a rotational driving force of an engine 12 mounted on a device body 10 into a reciprocating motion of a trimming blade mechanism 16 via a reciprocating mechanism 14, and a supporting arm 18
Handle that is tilted above the engine 12 via the
The structure is such that the ridges are trimmed while gripping 20 and pulling.

That is, the reciprocating mechanism 14 is eccentric via a pair of eccentric cams arranged to symmetrically deviate the rotational driving force of the engine 12 from the output shaft of the centrifugal clutch → the reduction gear → the shaft portion of the reduction gear (not shown). Trimming blade mechanism that converts into rotary motion and also via a cam rod attached to these eccentric cams
The upper blade 22 and the lower blade 24 of 16 are configured to reciprocate. The upper blade 22 and the lower blade 24 are held in place by a guide member 26 extending forward from the case of the reciprocating mechanism 14.

On the other hand, a sled member 28 formed of a circular ring member having a predetermined diameter is arranged at the tip of the guide member 26. This circular sled member 28 is a long hole 2 formed in a portion corresponding to a spoke.
The bolts 9 and 29 are inserted through the bolt member protruding from the guide member 26 and fixed by the stoppers 30 and 30.Therefore, the circular sled member 28 is adjusted in the longitudinal direction of the trimming blade mechanism 16 by adjusting the stopper 30. It is configured so that the position can be appropriately set along the line (see FIG. 2).

In this embodiment, a ring member having a perfect circular shape is used as the sled member 28, but needless to say, the shape is not limited to the perfect circular shape as long as the outer peripheral edge has an arc shape.

In addition, the handle 20 is formed by bending a pipe member or the like into a substantially gate shape, and is operated with respect to the device body 10 by operating handle clamps 32 and 34 which are respectively provided on the mounting portion of the support arm 18 and the bending portion. The throttle lever 36 is configured so that the angle and the like can be set appropriately, and a throttle lever 36 is provided at a predetermined position where an operator can easily operate.

In FIG. 1, reference numeral 38 is a protective cover of the reciprocating mechanism 14, and the protective cover 38 functions as a sled for the main body when the pulling operation is performed.

When using the ridge mower according to the present invention configured as described above, after the engine 12 is driven, the operating angle of the handle 20 is appropriately set by the handle clamps 32 and 34, and the throttle lever 36 is operated to operate the trimming blade. Upper blade 22 and lower blade of mechanism 16
The reciprocating 24 is used to trim the device main body 10 obliquely rearward to trim weeds in the ridges.The circular sled member is located between the lower end of the trimming blades 22 and 24 and the ridge ground. Not only does 28 function as a spacer, but since the outer peripheral edge is arcuate, it is possible to avoid inconveniences such as being caught during towing.

In addition, when working around the greenhouse, the trimming blades 22, 24 can be adjusted appropriately by the stoppers 30, 30 so that the tips do not protrude from the outer edge of the circular sled member 28. Inconveniences such as damage to the vinyl house can be prevented.

[Effect of device]

As described above, according to the small engine working machine of the present invention, the circular sled member disposed below the tip of the trimming blade mechanism functions as a spacer between the trimming blade mechanism and the ground, so that the trimming work or the towing work is performed. Since it is possible to reliably prevent the trimming blade from catching and jumping at the time, it is possible to improve not only the work efficiency but also the safety, and there are various advantages such as the trimming work around the vinyl house can be suitably performed. The practical effect is extremely large.

The ridge mower has been illustrated and described as a preferred embodiment of the small engine working machine according to the present invention, but the present invention is not limited to this embodiment, and is within a range not departing from the spirit of the present invention. It goes without saying that various modifications can be made in.

[Brief description of drawings]

FIG. 1 is a perspective view of a ridge mower as a preferred embodiment of a small engine working machine according to the present invention, and FIG. 2 is a bottom view of a main part of the ridge mower shown in FIG. 10 ... Equipment body, 12 ... Engine, 14 ... Reciprocating mechanism, 16 ... Trimming blade mechanism, 18 ... Support arm, 19 ... Long hole, 20 ... Handle, 22 ... Upper blade, 24 ... Lower blade, 26 ... Guide member, 28 ... Circular sled member, 30 ... Stopper, 32, 34 ... Clamp, 36 ... Throttle lever, 38 ... Protective cover,

Claims (1)

[Scope of utility model registration request] 1. A small-sized engine working machine in which a trimming blade mechanism at the front of the body is driven by an engine mounted on a working machine body and a hand is held by gripping a handle. A circular sled member is provided below a tip portion of the trimming blade mechanism. And the circular sled member is attached so that the circular sled member can be moved and adjusted along the longitudinal direction of the trimming blade mechanism.