JPH0471410A - Small-sized lawn mower - Google Patents

Abstract

PURPOSE:To obtain a small-sized lawn mower ensuring smooth flow of mowed grass even if a wire harness is stored in a part of a cutter housing by guiding mowed grass backward with a series of guide walls placed on the outer side wall of a side of a cutter housing. CONSTITUTION:A side wall of a cutter housing 14 is extended in a direction nearly tangential to a cutter blade to form an outer side wall 14i, which is attached to a mowed grass discharging part 500 placed at the rear part 14c of the cutter housing 14. A guide wall 270 is formed with a side wall of a guide table 25 and a guide plate 27. The guide wall 270 is connected to the outer side wall 14i and extended almost to the rear part of the outer side wall 14i to form a space 28 between both walls. A wire harness 29 is placed in the space. Wire harnesses 35-38 are inserted into the space 45 through a window 44 of the outer side wall 14i at the side of a battery 20.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a small lawn mower, and more particularly to a small lawn mower with improved wiring harness handling.

[Prior Art] Some small-sized lawn mowers are mowed by mowing the lawn by moving the lawn mower by operating a handle portion of the lawn mower in a standing position, for example. This small lawnmower is equipped with an engine, which uses power to rotate the cutter blade and drive the wheels. The drive of the engine or the transmission of power from the engine to the cutter blade, wheels, etc. is controlled by operating various operating levers provided on the operating handle. These operation levers are connected to the engine, transmission, cutter plate, etc. that are to be operated, respectively, by wire harnesses.

[Problems to be Solved by the Invention] As described above, a large number of wire harnesses are used in a small lawn mower, and the appearance of the lawn mower is impaired by the routing of these wire harnesses.

For this reason, it is unthinkable to store the wire harness inside the housing of a small lawn mower, but this would increase the size of the housing and impede the flow of the grass clippings, making it difficult for them to smoothly reach the grass discharge section. There is a risk that it will not be possible to discharge.

This invention was made in view of these points, and by storing a portion of the wire harness inside the cutter housing, the appearance quality can be improved, and the flow of cut grass can be ensured without increasing the size of the device. We can provide a small lawn mower that can.

[Means for Solving the Problems] In order to solve the above problems, a small lawn mower of the present invention is provided with a cutter blade that rotates on a vertical axis in a lower opening of a cutter housing, and a cutter blade that rotates on a vertical axis, and a cutter blade that rotates on a vertical axis. An outer wall in which one side wall of the cutter housing extends along a substantially tangential direction of the cutter plate is provided in the cut grass discharge section provided, and a guide wall that guides the cut grass rearward is provided in series with the outer wall, and It is characterized in that the outer wall extends to the outer side of the guide wall to form a space between these two walls, and a wire harness is disposed in this space.

[Function] In this invention, one side wall of the cutter housing extends approximately in the tangential direction of the cutter blade, and this outer wall is provided with a guide wall that guides the cut grass rearward, for example, to drive the rear wheels. Even if a protrusion is formed on the inside of the outer wall when the shaft is fixed to the outer wall, the flow of the cut grass is not obstructed because the guide wall guides the cut grass backward.

In addition, the outer wall extends to the outer side of the guide wall, and a wire harness is arranged in the space formed between these two walls, and the wire harness part is stored in the cutter housing by twisting it, and is used for small lawn mowers. Improves the appearance quality of the machine.

[Example 2] Next, an example of a small lawn mower according to the present invention will be described in detail based on the accompanying drawings.

Figure 1 is a side view of the small lawn mower, Figure 2 is a plan view of the small lawn mower, Figure 3 is a side view of the small lawn mower with wheels, engine, etc. omitted, and Figure 4 is a partially cutaway view of the small lawn mower. Plan view of section, 5th
The figure is a partially cutaway bottom view of the main part, and Figure 6 is the V of Figure 4.
7 is a partially cutaway left side view of the cutter housing, FIG. 8 is a right side view of the cutter housing, FIG. 9 is a partially broken rear view of the cutter housing, and FIG. The figure is a perspective view of the guide wall, Figure 11 is a plan view of the handle part, Figure 12 is a cross-sectional view of Figure 3, and
3 to 16 are sectional views showing other embodiments of the wire harness storage section, FIG. 17 is a side view of the angle adjustment section of the handle bar, and FIG. 18 is a sectional view taken along the line X--X in FIG. 17. be.

When using this small lawn mower, the handle section 1
The lawn mower is operated by operating the front wheels 2 and rear wheels 3 to mow the lawn, and is equipped with a lawn mowing section 4 for mowing the lawn and a grass collection section 5 for storing the cut grass.

An engine 6, which is a driving source for the lawn mower 4, is mounted approximately in the middle part, and an output shaft 7 of the engine 6 is oriented vertically. A pulley 8 is provided on the output shaft 7, and this pulley 8
Power is transmitted to a pulley 11 of a transmission 10 by a belt 9. The transmission 10 is provided on the drive shaft 12 of the rear wheel 3, and transmits the power of the engine 6 to the drive shaft 12 to rotate the rear wheel 3.

Further, a cutter plate 13 is rotatably provided on the output shaft 7, and the cutter plate 13, which rotates on a vertical axis, is provided in a lower opening 14a of a cutter housing 14 made of resin.

The attachment of this engine 6 to the cutter housing 14 is as follows:
As shown in FIGS. 4 and 6, a fixing plate 15 is tightened and fixed to the lower part of the engine 6 with bolts 16. The mounting opening 1 of the cutter housing 14 is attached to this fixing plate 15.
4b and bolt 18 through the support plate 17.
The mounting opening 14b is sandwiched between the nuts 19 and tightened.

The rear part 14c of the cutter housing 14 is raised, and the rear part 14c is located on the grass collection part 5 side, and the upper wall 14d of the cutter housing 14 is bent from the left front side to the right and extends to the rear part s14c.

The rear part 14c of this cutter housing 14 is a transmission 10.
A device corresponding to the transmission 10 is formed with a mounting opening 14e into which a battery 20 is inserted from the outside, and this mounting opening 14e is closed with a lid 21. The battery 20 is supported by the cutter housing 14 by a mounting member 22, and the mounting portion 22a of the mounting member 22 is connected to the upper wall boss 14f of the rear portion 14c of the cutter housing 14.
is applied and fixed by tightening with bolts 23.

The upper part of the battery 20 is located at the rear part 1 of the cutter housing 14.
The rear side of the battery 20 is pressed against a rib 14g extending downward from the upper wall of the cutter housing 14, and the rear side of the battery 20 is pressed against a rib 14h extending from the rear side 14c of the cutter housing 14 toward the front side. is being pressed by. The upper part of this i-body 21 is the cutter housing 1.
4, and the lid body 21 is attached to the upper wall 14d of the cutter housing 14 with screws 24.

The cut grass discharge section 500 provided at the rear part 14c of the cutter housing 14 is provided with an outer wall 14i that extends one side wall of the cutter housing 14 along a substantially tangential direction of the cutter plate 13. A guide stand 25 for guiding the cut grass to the rear is attached with screws 26 at a position corresponding to the part where the machine 10 is not installed. Even if a protrusion is formed inside the outer wall 14i when the drive shaft 12 of the rear wheel 3 is fixed to the outer wall 14i using this guide stand 25, the flow of grass clippings is not obstructed by this.

A groove 25a formed in the side wall of the guide stand 25 and a groove 14J formed in the rear part 14c of the cutter housing 14.
A guide plate 27 is engaged with the guide plate 27 . A guide wall 270 is formed by the side wall of the guide stand 25 and the guide plate 27.
The guide wall 270 is provided in series with the outer wall 141 and extends to approximately the rear part of the outer wall 14i, and a space 28 is formed between these two walls, and a wire harness is inserted into this space 28. 29 is arranged. The wire harness 29 is connected to the cutter drive clutch operating lever 30
and the cutter drive clutch 31, and the wire harness 29 runs along the right handlebar 32 from the window 33 of the outer wall f4i of the cutter housing 14 to the space 28.
will be introduced in This wire harness 29 is the transmission 10
The cutter drive clutch 31 extends from the rear side through the side portions to the front side, and is connected to the cutter drive clutch 31 . This wire harness 2
A rubber ring 34 is provided in the window 33 of 9 to prevent the wire harness 29 from being damaged.

Outer wall 14 of the cutter housing 14 on the battery 20 side
Wire harnesses 35 to 38 are inserted through i, and the wire harness 35 is connected to the main key switch 39 and the engine 6.
The wire harness 38 connects the speed change lever 42 and the transmission 10, the wire harness 36 connects the travel drive ON side holding operation lever 41 and the transmission 10, and the wire harness 37 connects the throttle lever 40 and the transmission 10. It is connected to a governor device (not shown) of the engine 6. These wire harnesses 35 to 38 are connected from the handle PAl to the cutter housing 14 along the left handlebar 43.
is introduced into the space 45 from the window 44 of the side wall 14i. A rubber ring 34 is similarly provided on this window portion 44 to prevent the wire harnesses 35 to 38 from being damaged.

The wire harnesses 35 to 38 are provided in a cover member 47 as shown in FIG. 12, and the cover member 47 is attached to the left handle lever 43 by tightening and fixing it with screws 48. This cover member 47 has a working window 47a formed therein corresponding to the part where the screw 48 is attached.
A tool is inserted through this working window 47a to attach the screw 48.

This cover member 47 can be constructed as shown in Figures 13 to 16.

In FIG. 13, a locking portion 43a is formed on the left handle bar 43, and the wire harnesses 35 to 38 are connected to the locking portion 43a.
is attached by engaging the groove 47b of the cover member 47 in which the cover member 47 is housed.

In FIG. 14, a storage section 43b is formed in the left handlebar 43, and the wire harnesses 35 to 38 are placed in this storage section 43b.
The groove portion 47c of the cover member 47 containing the is engaged and closed.

The $15 figure shows cover part 47 and wire harness 35 to 3.
8, and this cover part 47 is attached to the left handlebar 4.
3 with a resin retaining pin 49.

Figure 16 shows the wire harnesses 35 to 3 attached to the cover member 47.
8, and the mounting portion 47d of this cover member 47 is engaged with and attached to the left handlebar 43.

The wire harness 29 is also made in the same manner as in each of the above embodiments.
It is attached to the right handlebar 32.

These left and right handlebars 32.43 are shown in Figure 3417 and '
! As shown in Figure J18, it is attached to the rear part 14c of the cutter housing 14, and both have the same structure, so the left handle par 43 will be explained.

An iron inner reinforcing plate 51 with a nut 50 welded to it is attached to the inside of the rear part 14c of the cutter housing 14, and an aluminum outer reinforcing plate 52 is applied from the outside, and screws 53 are inserted from the outside to tighten the nuts of the inner reinforcing plate 51. 50 and tighten and fix. This outer reinforcing plate 52 is formed with a circular uneven portion 52a, and an inner support 54 and an outer support 55 are applied to the left handle par 43 at positions corresponding to the uneven portion 52a, and both are tightened with a nut 56. and are tightened and fixed with bolts 57, so that the uneven portion 54a formed on the inner support body 54 engages with the uneven portion 52a of the outer reinforcing plate 52. This outer support 5
5 to the inner reinforcing plate 52, and is screwed onto a nut 59 welded to the inner reinforcing plate 51. A cap 60 is fixed to a boss portion 60a of the head 58a of the support bolt 58. The cap 60 is formed with unevenness, and when the cap 60 is rotated, the support bolt 58 is rotated together.

When the cap 60 is rotated in the release direction, the support bolt 58
is loosened, and the uneven portion 54a of the inner support body 54 comes off from the uneven portion 52a of the outer reinforcing plate 52, making it possible to rotate. Thereby, when the left handlebar 43 is adjusted to a desired angle and the cap 60 is rotated in the tightening direction, the support bolt 58 is rotated together and tightened and fixed.

[Effects of the Invention] As explained above, in the small lawn mower of the present invention, one side wall of the cutter housing extends approximately in the tangential direction of the cutter blade, and this outer wall is provided with a guide wall that guides the cut grass rearward. For example, when fixing the rear wheel drive shaft to the outside wall, even if a protrusion is formed on the inside of the outside wall, the guide wall will guide the grass clippings backwards, so the flow of grass clippings will be reduced. There is no obstruction, and the flow of grass clippings can be ensured without increasing the size of the device.

In addition, the outer wall extends to the outer side of the guide wall, and the wire harness is arranged in the space formed between these two walls, so that a part of the wire harness is stored inside the cutter housing, making it compact. Purchases of external lawn mowers will improve.

[Brief explanation of the drawing]

Figure 4 is a side view of the small lawn mower, Figure 2 is a plan view of the small lawn mower, Figure 3 is a side view of the small lawn mower with wheels, engine, etc. omitted, and Figure 4 is a partially cutaway main part. Plan view of 5th
The figure is a partially cutaway bottom view of the main part, and Figure 6 is the V of Figure 4.
l-VT sectional view, Fig. 7 is a left side view of the cutter housing with a part cut away, Fig. 8 is a right side view of the cutter housing, Fig. 9 is a rear view of the cutter housing with a part cut away, Fig. 10 The figure is a perspective view of the guide wall, Figure 11 is a plan view of the handle part, Figures 12 and 12 are cutting-cut cross-sectional views of Figure 3, and Figures 13 to 16 are other embodiments of the wire harness storage section. 17 is a side view of the angle adjustment portion of the handlebar, and FIG. 18 is a sectional view taken along the line X--X in FIG. 17. In the figure, 1 is a handle, 2 is a front wheel, 3 is a rear wheel, 4 is a mower, 5 is a grass collector, 6 is an engine, 13 is a cutter blade, 14 is a cutter housing, 14a is a lower opening, 14c is a rear, 14i is the outer wall, 20 is the battery, 2
5 is a guide stand, 28.45 is a space, 27 is a guide plate, 29.35 to 38 are wire harnesses, 270 is a guide wall, and 500 is a mowing discharge section. Figure 14v! :I Figure 15 Figure 16/ Figure 17 Figure 18

Claims (1)

[Claims] A cutter blade that rotates on a vertical axis is provided in a lower opening of the cutter housing, and one side wall of the cutter housing extends approximately tangentially to the cutter blade to a cut grass discharge section provided at the rear of the cutter housing. and a guide wall that guides the grass clippings rearward are provided in series with the outer wall, and the outer wall extends to the outer side of the guide wall to form a space between these two walls, This small lawn mower is characterized by having a wire harness arranged in this space.