JPH04649Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a cut grass discharge port structure for a power lawn mower.

(Prior Art) A power lawn mower is known in which an engine rotates a cutter in a horizontal plane to cut grass.

(Technical problem to be solved by the invention) In the above-mentioned power lawn mower, when trying to eject the grass cut with the cutter approximately backwards,
There is a risk that grass clippings, pebbles, etc. may be blown backwards by the rotation of the cutter.

The present invention was developed to solve the above technical problems, and its purpose is to prevent grass clippings, pebbles, etc. from flying backwards, and to guide the discharge toward the rear downwards behind the rear wheels. To provide a cut grass discharge port structure for a power lawn mower, which allows mowing work to be carried out smoothly when changing direction or mowing the lawn in an upwardly tilted state such as on an inclined surface.

(Means for Solving the Technical Problems) The means for solving the above technical problems are provided with wheels at the front and rear of the housing, a cutter which rotates in a horizontal plane driven by an engine between the front and rear wheels of the housing, In a power lawn mower having a grass outlet opening rearward at the rear of the lawnmower, the rear of the outlet and the sides thereof are covered with a cover plate, and a gap is provided between the lower part of the outlet and the lower part of the cover plate. The gap is used as the final discharge outlet for cut grass, and a flexible skirt extends downward from the bottom of the cover plate.

(Operation by the above means) According to the above means, the cut grass cut by the cutter, grass clippings, pebbles, etc. discharged backward by the rotation of the cutter, are discharged from the discharge port, hit the cover plate, and are discharged downward. At the same time, even when the lower end of the cover plate touches the ground, it flexes to allow smooth movement, and the mower tilts forward and upward.
Even when the cover plate is lowered, the lower part is bent, allowing it to tilt forward and upward at a large angle.

(Embodiment) Next, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view of the lawn mower 1, with front wheels 3, 3 on the left and right sides of the front of the housing 2, and rear wheels 4, 3 on the left and right sides of the rear part of the housing 2.
4, all of which are composed of wheels. A handle 5 extends from the rear of the housing 2 so as to be tilted rearward and upward.

The details of the housing 2 are as shown in FIG. 2, and a blade-shaped cutter 6 is disposed within a circular periphery 2a so as to rotate horizontally, and a part of the outer edge of the cutter 6 stands up to generate an airflow. The surrounding piece 2a is configured as follows.
A vertical type engine 7 with a vertical crankshaft is mounted on the upper piece 2b, and the lower part of the crankshaft 7a hangs down vertically to form an output part 7b, and a cutter 6 is connected to the lower end of this through a holder 6a. are tied together. The cylinder 7c of the engine 7 is oriented horizontally and covered above with a cover 8, and 9 is a recoil starter.

A grass discharge port 10 is integrally formed at the rear of the housing 2, and the discharge port 10 has a lower wall 10a inclined rearward and upward at a gentle angle, a rear end 10b substantially horizontal, and
c is formed so as to be spaced apart upwardly and inclined rearward and upward at a steeper angle than the lower wall 10a.

A cover plate 11 is made to face the discharge port 10. The cover plate 11 has a U-shaped cross section, the side pieces 11a face the outsides of the left and right side pieces 10d of the outlet 10, the back plate 11b is formed so as to be inclined rearward and downward, and the upper part 11c
and the upper part of the discharge port are close to each other, and the lower part 11d and the lower part of the discharge port are separated from each other, and a discharge gap S opened downward is formed therebetween. Upper end 11e of back plate 11b
is bent forward and is supported by a hinge 13 on the housing 2 via a bracket 12 provided above the upper wall 10c of the discharge port 10 so as to be freely openable and closable. be.

A skirt 15 made of a flexible elastic material such as rubber is suspended from the lower part 11d of the back plate 11, the upper part of the skirt 15 is tied to the lower part of the back plate, and the skirt 15 has a horizontal dimension spanning the entire width of the opening 11, and has a lateral dimension that extends over the entire width of the opening 11. The lower end touches the ground G.

In the above, the lawn mower 1 is moved to the left in the figure by pushing the handle 5, and the lawn is cut by rotating the cutter 6. The cut grass is sent rearward by the fan action of the cutter 6 and discharged rearward from the discharge port 10. By the way, the cover plate 11 faces the rear of the discharge port 10, and the grass clippings and pebbles carried along with it collide with the cover plate 11, and fall and are discharged from the downwardly opened gap S to the rear of the wheels 4. Since the skirt 15 is suspended, discharge from below to the rear is also prevented. Since the skirt 15 is flexible, it bends and overcomes mown grass, etc. behind the wheels, allowing smooth movement.

By the way, when changing direction or driving on a slope where the front is uphill, the skirt 15 is flexible and can be tilted forward and up to the part near the lower end of the back plate 11d.In other words, even when the ground is at _G1 , the skirt 15 The bending allows for smooth operation.

(Effects of the invention) As is clear from the above, according to the invention, when a rear-facing cut grass discharge port is provided, the cut grass is applied from the grass discharge port to the cover plate, the direction of the cut grass is changed downward, and the cut grass passes through the gap. Since the grass clippings are dropped on the ground between the housing and the flexible skirt, the grass clippings, pebbles, etc. are prevented from flying backwards during discharge, and the discharge is performed smoothly and reliably. The skirt can bend forward and upward, allowing for smooth direction changes and mowing on slopes.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is a perspective view, and FIG. 2 is an enlarged longitudinal sectional side view of parts such as the cutter, housing, and engine. In addition, in the drawing, 1 is a lawn mower, 2 is a housing, 3,
4 is a wheel, 6 is a cutter, 7 is an engine, 10 is an exhaust port, 11 is a cover plate, and 15 is a skirt.

Claims (1)

[Scope of utility model registration request] In a power lawn mower that is equipped with a cutter that rotates in a horizontal plane driven by an engine between the front and rear wheels of the housing, and has a grass discharge port opening rearward at the rear of the housing, the grass discharge port is provided at the rear of the discharge port and on the side thereof. and a lid plate, and a gap is provided between the lower part of the discharge port and the lower part of the cover plate, and the gap is used as the final discharge outlet for the cut grass;
A cut grass discharge port structure for a power lawn mower, characterized in that a flexible skirt extends downward from the lower part of the cover plate.