JPH10191743A - Riding mower - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make the load of a front wheel side relatively small, to demonstrate sufficient mowing performance and to improve the maintainability of a battery in a riding mower in which a cutter is housed inside a cutter housing supported by a car body frame between a front wheel and a rear wheel suspended at the front part and rear part of the car body frame and a riding seat and a prime mover and the battery arranged at the rear part of the riding seat are mounted on the car body frame. SOLUTION: The prime mover 15 is mounted on the car body frame 11 between left and right rear wheels WR, the battery 18 is mounted on the car body frame 11 at the rear part of the prime mover 15 on the rear side of a rear axle AWR, and a rear part bumper 20 projected to the rear part of both rear wheels WR is attached to the rear end of the car body frame 11 at the rear part of the battery 18.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a riding mower (including a riding mower) for mowing grass, and more particularly to a riding mower in which a cutter housing accommodating a cutter is supported by a body frame between a front wheel and a rear wheel. The present invention relates to a riding mower in which a seat, a prime mover, and a battery are mounted on a body frame.

[0002]

2. Description of the Related Art Conventionally, such a riding lawn mower is disclosed in, for example, Japanese Utility Model Laid-Open No. 61-135725 and Japanese Utility Model Publication No. 60-34.
It is already well known from Japanese Patent Application Publication No.

[0003]

By the way, in such a riding mower, the cutter housing is arranged behind the front wheel side, and the mowing by the cutter is performed after the front wheels step on grass such as grass. If the grass is stepped down strongly with the front wheels, it is difficult to mow the grass with a cutter. However, in the riding lawn mower disclosed in the Japanese Utility Model Laid-Open Publication No. 61-135725, the engine is mounted on the body frame so as to be located below the riding seat disposed between the front wheel and the rear wheel. Since the battery is mounted on the body frame in front of the axle and the center of gravity of the entire riding lawn mower is relatively forward, the load on the front wheel side is relatively large, and the lawn mowing performance is insufficient. Further, in the riding lawn mower disclosed in Japanese Utility Model Publication No. 60-34526, the engine is mounted on the body frame so as to be arranged between the left and right rear wheels behind the riding seat. Although the load on the wheel side is relatively large, the battery is mounted on the vehicle body frame in a narrow space between the passenger seat and the engine, so that the maintainability of the battery is inferior.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and is intended to reduce the load on the front wheel side so that sufficient mowing performance can be exhibited, and to improve the maintainability of the battery. It is intended to provide a mower.

[0005]

In order to achieve the above object, a front and rear wheel of a long front and rear body frame has a front wheel and a rear wheel suspended, and a cutter housing supported by the body frame between the front and rear wheels. A cutter is housed therein so as to be rotatable around a vertical axis, and a passenger seat is disposed on the vehicle body frame at an intermediate position along the front-rear direction of the vehicle body frame, and a motor is disposed behind the passenger seat. And a battery mounted with a battery, the prime mover is mounted on the body frame between the left and right rear wheels, and the battery is mounted on the body frame behind the prime mover and on the rear side of the rear axle. At the rear end of the vehicle body frame behind the battery, a rear bumper projecting rearward from the rear wheels is attached.

According to such a configuration, the prime mover is disposed between the rear wheels behind the passenger seat, and the battery is disposed behind the prime mover and behind the rear axle.
It is possible to increase the load on the rear wheel side more than the front wheel side, and to obtain sufficient mowing performance by minimizing the stepping down of the grass with the front wheel. The battery can be easily maintained from the rear side of the vehicle body frame while protecting against the force of the battery.

According to a second aspect of the present invention, in addition to the configuration of the first aspect, a front bumper is attached to a front end of the vehicle body frame so that the front and rear ends of the vehicle body frame are respectively provided. To the bumper installed,
By tying ropes, etc., the riding mower can be securely fixed to a bed such as a truck.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments of the present invention will be described below based on one embodiment of the present invention shown in the accompanying drawings.

FIGS. 1 to 7 show an embodiment of the present invention. FIG. 1 is a side view of a riding mower, FIG. 2 is a plan view taken on line 2 of FIG. 1, and FIG. 4 is a rear view of the cutter housing, FIG. 5 is a rear view of FIG.
6 is a side view as viewed in the direction of the arrow 6 in FIG. 4, and FIG. 7 is a sectional view taken along the line 7-7 in FIG.

[0010] First, in FIGS. 1 to 3, the riding mower, which comprises a long body frame 11 back and forth, a pair of front wheels W _F is the front of the body frame 11, W
_F is steerably suspended. On the other hand, the rear portion of the body frame 11 and the transmission case 12 is fixed, the left of the transmission case 12, the rear wheel at the rear axle housing 13 secured to the right side faces W _R, W _R the shaft rotatably Supported. And Thus, the power input to the transmission case 12 is transmitted both rear wheel W _R, the W _R through the transmission mechanism and the differential mechanism of the transmission case 12 (not shown).

[0011] corresponds to an intermediate position along the longitudinal direction of the vehicle body frame 11 is riding seat 14 is arranged, on the rear side of the occupant seat 14, the left and right both rear wheel W _R, between W _R An engine 15 as a prime mover is mounted so as to be disposed substantially at the center, and power from a crankshaft (not shown) of the engine 15 is input to the transmission case 12.

The engine 15 moves in the forward direction of the riding mower.
An exhaust muffler 16 connected to the engine 15 is fixedly arranged at a position on the left side of the engine, and a fuel tank 17 is fixedly arranged at a position on the right side of the engine 15. Further, a battery tray 19 is fixed on the body frame 11 behind the engine 15 so as to be located behind the rear axle _AWR , and a battery 18 is detachably mounted on the battery tray 19. You.

At the rear end of the body frame 11, a rear bumper 20 located on the rear side of the battery 18 has two rear wheels W.
_R, W mounted so as to project to the rear side of the _R, rear portion Panpa 20, left proximal end so as to extend rearward and upward from the rear end of the vehicle body frame 11 is attached to the body frame 11 , Right pair of support arms 21 and 21
And a protection bar 22 connecting between the distal ends of the support arms 21 and 21
The two ends of the protection bar 22 are supported by both support arms 21 and
1 are respectively protruded sideways.

[0014] the front end of the body frame 11 also, which front bumper 23 is attached as the front wheels W _F, than W _F protruding to the front side, said front bumper 2
Reference numeral 3 denotes a pair of left and right support arms 24, 24 extending forward from the front end of the body frame 11 such that the distal ends are bent upward, and connects between the distal ends of the two support arms 24, 24. The protection bar 25 is configured such that both ends of the protection bar 25 protrude laterally from the support arms 24, 24.

The body frame 11 is covered with a body cover 26 made of synthetic resin.
A handle post 26a extending vertically in front of the passenger seat 14, step portions 26b, 26b arranged on both left and right sides of the handle post 26a, a seat support 26c for supporting the passenger seat 14, and a seat support 26c A rear cover 26d extending rearward from the rear is provided, and the engine 15, the exhaust muffler 16, most of the fuel tank 17 and a part of the battery 18 behind the passenger seat 14 are covered with the rear cover 26d. The upper fuel filler port of the fuel tank 17 penetrates through the rear cover part 26d and protrudes upward. A cap 27 is detachably attached to the upper fuel filler port of the fuel tank 17.

By the way, at the front of the body frame 11,
Front wheels W _F, steering mechanism 28 connected to the W _F is disposed.
A steering shaft (not shown) for inputting a steering force to the steering mechanism 28
Are disposed in the handle post 26a, and a steering handle 29 is attached to the upper end of the steering shaft projecting from the upper end of the handle post 26a. A brake pedal 32 is disposed on a step portion 26b on the right side of the handle post portion 26a, and a shift lever 33 for switching a gear position in a transmission mechanism in the transmission case 12 is disposed on a right side of the passenger seat 14. Is done.

[0017] the front wheels W _F, W _F and the rear wheels W _R, W _R
The cutter housing 3 is located below the body frame 11 between
The cutter housing 34 is supported by the body frame 11 so as to be able to move up and down by a link mechanism 37.

The cutter housing 34 is formed, for example, in a substantially horizontal plane, in a substantially circular shape, in which the upper end of a side wall 35, which is endlessly continuous, is closed by a ceiling wall 36, and is formed in a dish shape with an open bottom. In the cutter housing 34,
A cutter 38 rotatable about a vertical axis is stored.

The link mechanism 37 includes a pair of front links 39 connecting between the front part of the body frame 11 and the front part of the cutter housing 34, and a pair of front links 39 connecting between the middle part of the body frame 11 in the front-rear direction and the rear part of the cutter housing 34. And a rear link 40 to form a so-called parallel link. By operating a lifting operation lever 41 connected to one of the rear links 40 and disposed on the left side of the passenger seat 14. The cutter housing 34 is moved up and down with its attitude with respect to the ground kept constant.

A rotary shaft 42 having a vertical axis is rotatably supported at the center of the cutter housing 34.
The cutter 38 is fixed to the lower end of the rotary shaft 42 in the cutter housing 34, and the driven pulley 43 is fixed above the cutter housing 34 at the upper end of the rotary shaft 42. on the other hand,
On the rear side of the cutter housing 34, a power take-out shaft 44 capable of transmitting power from the engine 15 is provided with the rotary shaft 42.
An endless power transmission belt 46 is wound around a driving pulley 45 provided at the lower end of the power take-out shaft 44 and the driven pulley 43.

Therefore, the cutter 38 can be driven by the power from the engine 15,
By operating an operation lever 47 disposed on the left side of the handle post 26a in the engine post 6, the engine 1
5 and the cutter 38 can be switched between a power transmission state and a power transmission cutoff state.

4 to 6, a scroll portion 50 is provided in a range of approximately 180 degrees in the front half of the cutter housing 34. That is, the front half 36a of the ceiling wall 36 of the cutter housing 34, which is in the range of approximately 180 degrees, is formed so as to gradually increase in height along the rotation direction 48 of the cutter 38, and the scroll portion 50 The highest part is formed so as to correspond to the right side of the body frame 11.

Referring also to FIG. 7, the side wall 35 of the cutter housing 34 is opened downward corresponding to the highest part of the scroll part 50, that is, the highest part in the front half part 36a of the ceiling wall 36. An open protrusion 35a is provided, which has a substantially U-shaped cross section and protrudes laterally, and a substantially U-shaped reinforcing frame 53 which is open upward is fixed to a lower portion of the open protrusion 35a. . Thus, a rectangular scroll discharge port 51 is formed by the open projection 35 a and the reinforcing frame 53, and the scroll discharge port 51 is closed by a cover plate 52 so as to be openable and closable.

A support plate 54 is fixed on the open protrusion 35a by two pairs of bolts 55 and nuts 56, and the support shaft 5 has an axis along the longitudinal direction of the riding mower.
7 is fixedly supported by the support plate 54. The upper end of the cover plate 52 is supported by the support plate 54, that is, the cutter housing 34, so as to be capable of opening and closing around the axis of the support shaft 57. Further, a torsion spring 58 surrounding the support shaft 57 is provided between the support plate 54 and the cover plate 52, and the cover plate 52 is urged in a direction to close the scroll discharge port 51 by the spring force of the torsion spring 58. .

A through hole 59 is provided at a lower portion of the cover plate 52, and the reinforcing frame 53 projects outward through the through hole 59 of the cover plate 52 in a state where the scroll discharge port 51 is closed. The pin 60 to be fixed is fixed. The cover plate 52 of this pin 60
The protruding portion is provided with an insertion hole 61 extending in the vertical direction, and a locking pin 62 engaging with the outer surface of the lid plate 52 is inserted into the insertion hole 61 to close the lid plate 52. Is maintained.

On the ceiling wall 36 of the cutter housing 34, the right rear portion 36b, which is within a range of approximately 90 degrees after the cutter 38 has passed the scroll portion 50 along the rotation direction 48, is the highest position of the front half portion 36a. And the scroll portion 50
The left rear portion 36c, which is a range of approximately 90 degrees between the lowest portion and the right rear portion 36b, is formed so as to be lower than the right rear portion 36b with a step and smoothly continue to the lowest portion of the front half portion 36a. .

Side wall 35 of cutter housing 34
In the rear portion, a discharge port 64 disposed rearward of the scroll discharge port 51 and opened toward the rear side.
The right side of the cutter housing 34 along the width direction of the body frame 11 in the forward direction of the riding mower is provided over a substantially half of the rear portion of the cutter housing 34 along the width direction.

Further, the discharge port 64 is formed by cutting out, for example, approximately 2/3 of the lower side of the rear portion of the side wall 35, and for example, approximately 1/3 of the upper side of the rear portion of the side wall 35 is formed of the discharge port 64. Is left as a regulating wall portion 65 that forms the upper edge.

At the right and left rear portions 36b and 36c of the ceiling wall 36 of the cutter housing 34, a discharge cover 66 is provided.
Is fixed. The discharge cover 66 includes a first cover plate 67 formed of metal or a hard synthetic resin and fastened to the cutter housing 34, and a second rubber cover plate 68 fastened to the first cover plate 67. .

The first cover plate 67 is provided with a lateral guide portion 67a extending in the front-rear direction so as to cover the right side of the discharge port 64 on the right side in the forward direction of the riding mower, and has a substantially circular dish shape. The discharge port 64 is formed in a substantially right half of the rear part of the side wall 35 in the cutter housing 34,
Even though a part of the discharge port 64 is open to the right side, the direction in which the grass is discharged from the discharge port 64 is forcibly determined to the rear side by the side guide portion 67a.

[0031] At the rear of the first cover plate 67, and the inclined portion 67b is provided extending rearwardly downward, the second cover plate 68, left and right rear wheel W _R, the inclined portion 67b between W _R It is fastened and extends downward. Therefore, the right rear end of the first cover plate 67 in the discharge cover 66 is located at the right rear wheel W.
Would be disposed in front of _R, the rear end position of the rear end i.e. outlet cover 66 of the second cover plate 68, the rear wheels W _R, is set corresponding to the front of the W _R.

Next, the operation of this embodiment will be described.
And both rear wheels W behind the passenger seat 14 _R, W_RBetween
Gin 15 is arranged, and
Since the battery 18 is arranged, in the riding mower
Front wheel W_FRear wheel W than side_RSide load can be increased
it can. Therefore, the cutter housing the cutter 38
Front wheel W located in front of housing 34_F, W_FThe load of
When the riding mower moves forward, the front wheel W_F, W
_FTo avoid as much as possible to knock down the grass
The grass that is standing without standing down is cut with the cutter 38.
By doing so, sufficient mowing performance can be obtained.

[0033] Moreover the rear end of the body frame 11, a rear bumper 20 is the rear wheels W _R positioned on the rear side of the battery 18, since than W _R is attached so as to protrude rearward, the rear Maintenance of the battery 18 from the rear side of the body frame 11 can be easily performed while protecting the battery 18 against external force by the bumper 20.

A front bumper 23 is attached to the front end of the vehicle body frame 11, and
Bumpers 20, 23 attached to the rear end respectively
Then, the riding mower can be securely fixed to a bed such as a truck by connecting a rope.

The cutter 38 in the cutter housing 34
The cut grass is cut out from the outlet 6 of the cutter housing 34.
4, the outlet 64 is provided at the rear of the side wall 35 of the cutter housing 34, and the rear of the cutter housing 34 is provided with the direction in which the cut grass is discharged from the outlet 64. The discharge cover 66 defined on the side is fixed. Therefore, even if the side wall 35 of the cutter housing 34 is, for example, circular in a horizontal plane, a part of the discharge port 64 faces the side, so that the direction of discharging the cut grass from the discharge port 64 is surely toward the rear side. defined, will be pushed effectively during the grass by at least a part of the grass clippings to be discharged is depressed by the rear wheel W _R, W _R. The rear wheels W _R, be mowed grass is relatively large discharge on one side of the W _R, mowing raised surface after beaten by the rear wheel W _R is because substantially the uniform finish after Kariage is good Become.

Since the regulating wall 65 which forms the upper edge of the discharge port 64 is provided at the rear of the side wall 35 of the cutter housing 34, it is difficult for relatively long cut grass to be discharged from the inside of the cutter housing 34. A relatively long residence time of the cut grass in the cutter housing 34 can be made relatively long so that the cut grass can be shredded, which also enables effective fertilization.

In addition, the discharge port 64 extends from the substantially central portion of the cutter housing 34 along the width direction of the body frame 11 to the right side along the forward direction of the riding mower, and extends along the width direction of the rear portion of the cutter housing 34. are those provided over approximately half, the mowed grass discharged from the discharge port 64 both rear wheel W _R, while easy stepping in the right rear wheel W _R of W _R, grass clippings from a relatively wide discharge port 64 rearward It is possible to discharge so as to be dispersed to the side.

The exhaust port 64 is disposed on the right side of the riding mower in the forward direction, while the exhaust muffler 16 connected to the engine 15 located substantially in the center of the body frame 11 in the width direction is provided with a riding mower. Engine 1 along the forward direction of the aircraft
By being arranged on the left side of 5, the grass can be prevented from being dispersed on the exhaust muffler 16 side where the temperature becomes relatively high.

In the front half of the cutter housing 34, a scroll portion 50 whose ceiling height is gradually increased along the rotation direction 48 of the cutter 38 is provided.
0 is provided so as to correspond to the right side of the body frame 11, and a scroll discharge port 51 that can be opened and closed by a lid 52 is provided on the side wall 35 of the cutter housing 34 corresponding to the highest part of the scroll part 50. Is provided. Therefore, it is also possible to collect the cut grass in the glass bag by connecting the glass bag to the scroll discharge port 51, and when the scroll discharge port 51 is closed, the cut grass accumulated at the highest position of the scroll portion 50 can be collected by the cutter 38. The cut grass can be cut more effectively, and the cut grass can be more effectively cut, and the cut grass after the cut is discharged from the rear side from the discharge port 64 located on the rear side of the scroll discharge port 51. Will be.

Further, the rear end of the discharge cover 66 fixed to the cutter housing 34 is connected to the left and right rear wheels W _R , W _R.
Either one of, since it is arranged in front of the wheel W _R after the right in this embodiment, the rear wheels of the right side together with the mowed grass discharged from the discharge port 64 falls downward by colliding with the discharge cover 66 W _R will trodden by that, the grass clippings are effectively enters in promoting corruption is achieved by between grass, also finished after mowing so forcibly tread down the grass at the rear wheel W _R is improved.

Although the embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various design changes can be made without departing from the present invention described in the appended claims. It is possible to do.

For example, the present invention is applicable to a riding mower in which an electric motor operated by power supplied from a battery 18 is used as a prime mover instead of the engine 15, and a riding lawn mower for mowing turf. The present invention is also applicable to the present invention.

[0043]

As described above, according to the first aspect of the present invention, the prime mover is disposed rearward of the passenger seat, and the battery is disposed rearward of the prime mover and rearward of the rear axle. By doing so, it is possible to make the load on the rear wheel side larger than that on the front wheel side, and it is possible to obtain sufficient mowing performance by minimizing stepping on the grass with the front wheel, It is possible to clean the finish after mowing by stepping on the grass cut with the rear wheel, which is relatively large, and furthermore, protecting the battery against external force with the rear bumper, Maintenance of the battery can be easily performed from the rear side.

According to the second aspect of the present invention, the riding mower is securely fixed to the bed such as a truck by connecting ropes to bumpers attached to the front and rear ends of the vehicle body frame. Can be.

[Brief description of the drawings]

FIG. 1 is a side view of a riding mower.

FIG. 2 is a plan view as viewed in the direction of arrow 2 in FIG.

FIG. 3 is a rear view as viewed in the direction of arrow 3 in FIG. 1;

FIG. 4 is a plan view of the cutter housing.

FIG. 5 is a rear view as viewed in the direction of arrow 5 in FIG. 4;

FIG. 6 is a side view as viewed in the direction of arrow 6 in FIG. 4;

FIG. 7 is a sectional view taken along line 7-7 of FIG. 6;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 11 ... Body frame 14 ... Passenger seat 15 ... Engine as a prime mover 18 ... Battery 20 ... Rear bumper 23 ... Front bumper 34 ... Cutter housing 38 ... Cutter A _WR ··· rear axle W _F ··· front wheel W _R ··· rear wheel

Claims (2)

[Claims] 1. A front wheel to the front and rear long body frame back and forth (11) (W _F) and the rear wheel (W _R) is suspended, the front wheel (W _F) and the rear wheel (W _R) body between In the cutter housing (34) supported by the frame (11), the cutter (3) is rotatable around a vertical axis.
8) is accommodated, and a passenger seat (14) is disposed on the vehicle body frame (11) at an intermediate position along the front-rear direction of the vehicle body frame (11), and is disposed behind the passenger seat (14). Motor (15) and battery (18)
In the riding mower bets is mounted, a motor (15) is left, mounted on the body frame (11) between the right rear wheel (W _R), prime mover (15) rearwardly of the vehicle body frame than (1
1) Above the rear axle (A _WR ), the battery (1
8) is mounted, the rear end of the body frame (11) behind the said battery (18), wherein said that the rear wheels (W _R) rear bumper that projects rearward from (20) is mounted Riding mower. 2. The vehicle according to claim 1, wherein a front bumper is mounted on a front end of the vehicle body frame.
The riding mower described.