JPS63245613A - Riding lawn mower - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention aims to reduce the size and weight of a lawn mower by configuring a grass bag for storing cut grass as a part of the lawn mower, and also to reduce the size and weight of the entire vehicle body including the operator. This invention relates to a new riding lawn mower that has good balance and is easy to maneuver and operate.

[Technology behind the present invention]

Lawn mowers are of the so-called walk-behind type (a type in which all drive, including the rotation of the cutter, is performed manually), which are suitable for general households, and have features such as small size, light weight, and ease of operation. However, a so-called self-propelled type is known in which the rotation of the cutter and the movement of the machine are performed by a small engine mounted on a base. As mentioned above, this type of lawn mower has the advantages of being small, lightweight, and very easy to handle when mowing the lawn, but it is difficult to work efficiently when the area to be mowed is quite large. Moreover, since all of the work was done while walking, the operator was highly fatigued, making it unsuitable for continuously mowing large areas.

In order to solve the above-mentioned problems, a riding-type lawn mower as shown in FIGS. 3 and 4, for example, has been provided. Describing the structure of this riding type lawn mower, the lawn mower 30 shown in FIG. 3 has an engine 31 mounted in front of a body frame extending in the front-rear direction, a transmission case 32 disposed behind the body frame, The steering boss 33 is integrated with a bonnet 34 housing the engine 31 and is provided approximately in the center of the vehicle body, and the seat boss 35 provided to cover the transmission case 32 is provided at the rear of the vehicle body. The lawn mower 50 shown in FIG. 4 has both an engine and a transmission case mounted approximately in the center of the body frame, a steering post 51 is installed upright in front of the body, and a seat is provided to cover the engine and transmission case. The post 52 is attached approximately to the center of the vehicle body. Regardless of the type of lawn mower 30.50, a cutter pouch 36.53 housing a cutter blade for cutting grass, grass, etc., for cutting grass, grass, etc. is located below the body frame, and is located at the lower surface of the vehicle body approximately in the center, and is movable up and down. It is normal to do so.

Also, to describe the mounting structure of the grass bag that stores the grass cut and collected by the cutter plate' in the riding type lawn mower 30.50, the front wheel 3 of the lawn mower 30.50
8.55 and the wheel base of the rear wheel 39.56, the vehicle body frame extends in a plane over the entire length in the front-rear direction. ) was an inevitable configuration.

In this way, this riding-type lawn mower 30.50 allows the operator to mow the lawn while sitting on the seat 37.54 while the riding type lawn mower 30.50 is moving, so the operator is less fatigued and can mow a large area. It can be said that it is suitable for continuous operation. However, this riding-type lawn mower 30.50 is generally large in size and heavy in weight, so it is not suitable for mowing work on soft land or work in places with many ups and downs.

There were also inconveniences such as the important grass being trampled by the wheels and being damaged. In addition, it is not necessarily easy to maneuver and operate, making it difficult for beginners to handle it right away, and also resulting in high costs.

Also, since the grass bag 40.57 is attached to the rear end of the vehicle body, the shooter duct 43.61 for storing grass, grass, etc. into the grass bag 40.57 has one end connected to the cutter deck 36.53. Connect the main body to the outlet of the vehicle and extend it to the outside of the vehicle body, and connect the other end to the glass bag 40.5.
Since the grass bag 40.57 and the shader duct 43.61 are connected to the opening of the lawn mower [30, 50, Furthermore, there was a disadvantage that the size and weight of the device also increased.

In addition, since the engine as the drive layer and the transmission case as the transmission mechanism are arranged at predetermined positions in the front and rear of the vehicle body, the bonnet 34 or seat post 35, 52 that houses them is placed in a predetermined position on the vehicle body frame. Since the engine, transmission case, etc. can be stored or arranged in an upright position, the space in which the engine, transmission case, etc. can be stored or arranged is naturally limited. In addition, when driving or working, the worker sits on the seat 37.54 and drives with his/her feet aligned in the space between the front steering column 33.51. Because of this, there was a tendency to lack a sense of unity and close contact with the vehicle body in terms of operation.

In any of the above types of riding lawn mowers 30.50, the rear wheels 39.56 serve as drive wheels, and the rotation of the engine 31 is transmitted to the rear wheels 39.56 via the drive shaft, In many cases, the front wheel 38.55 is the steering wheel, and generally these left and right front wheels 38.55 and rear wheels 39.56
Normally, each tread in between is the same width, so the steering radius of the front wheels is limited.
It lacked the necessary maneuverability.

Furthermore, since the seat 37.54 on which the worker rides is placed on the road in the area where the engine 31 and/or the misosilane case 32 are stored, the seat 37.5
In reality, for example, a gear shift lever 41.58 and the like is often provided protruding from the seat post 35.52 supporting the gear shift lever 41.58 for convenience of operation by the operator. In such a structure, even though the individual operating levers themselves are designed with consideration to the functionality of the operator's operation, when viewed as a whole, they are arranged unevenly and dispersed, making the operation complicated for the operator. That's what I was giving.

[Object of the present invention]

The present invention takes into consideration the problems of the conventional lawn mowers described above, and is suitable for mowing work ranging from narrow mowing areas to vast mowing areas while achieving a compact and lightweight design, and also stores the cut grass. This product was developed with the aim of providing a completely new riding lawn mower, by configuring a grass bag as part of the lawn mower to improve the overall balance of not only the vehicle itself but also the lawn mower operator. It is something.

[Configuration of the present invention]

In order to achieve the above-mentioned object, the present invention mounts an engine approximately in the center of a vehicle body frame in which front wheels and rear wheels are arranged,
A vertically movable cutter deck containing a cutter blade is disposed below the engine, and a steering post with a seat attached is disposed above the engine, extending forward and upward from the rear of the vehicle body frame. The gist of the present invention is to form a space between the rear wheels and the front wheels in which a transmission case or the like can be placed, and to arrange a grass bag for storing cut grass directly above the rear wheels.

〔Example〕

EMBODIMENT OF THE INVENTION Below, one Example of the riding lawn mower based on this invention is demonstrated with reference to drawings.

FIG. 1 shows a side view, and FIG. 2 shows a perspective view.

1 is a riding lawnmower according to the present invention; 2 is a body frame having a substantially X-shaped structure when viewed from the side; A fender 4 that is formed upright is extended.

Left and right front wheels 5, which are drive wheels, are attached to the front of the vehicle body frame 2, and right and left rear wheels 6, which are steering wheels, are attached to the rear of the vehicle body frame 2, making the vehicle a total of four wheels.

Reference numeral 7 denotes an engine mounted approximately in the center of the vehicle body frame 2, and the rotation of this engine 7 is transmitted to the front wheels 5 via a drive shaft and the like, as well as a rotation transmission section (not shown).
A cutter blade 9, which will be described later, is rotationally driven through the cutter blade 9. Reference numeral 8 denotes a canter deck containing a cutter blade 9 disposed below the engine 7, and this cutter deck 8 is disposed inside the lower part of the floor 3 so as to be movable up and down.

Reference numeral 10 denotes a steering post that extends upward and forward from the center upper end of the fender 4 above the engine 8, thereby creating a space between it and the front wheel 5 in which a transmission case 13 (described later) is disposed. It is formed. A steering handle 11 is attached to the tip of this steering post 1O, and a seat 12 on which a worker rides is integrally attached to the base end. Reference numeral 13 denotes a mission case disposed in a space between the front wheels 5 and the steering post 10, and this mission case 13 extends from the body frame 2 and is installed between the left and right front wheels 5. (equivalent to a seat post, etc., installed to cover a transmission case, etc.).

Thus, the front wheel 5 is pivotally attached to the output shaft protruding from the left and right sides of the transmission case 13, and the gear shift lever 15 taken out from the output shaft of the transmission case 13 is protruded from the storage post 14 as shown in the figure. There is.

A grass bag 16 is provided directly above the rear wheel 6 to store cut grass, grass, etc., and is attached to the rear of the fender 4 provided to surround the engine 7.

17 is a hide adjustment lever provided on the side of the gear shift lever 15, 18 is a parking brake lever protruding from the side of the storage post 14, and 19 is a clutch lever 520.
indicates a brake lever, and 21 indicates a step bar.

In addition to the two wheels described in this embodiment, the rear wheels 6 may be negative wheels.

As described above, the present invention centrally arranges various mechanisms such as the transmission system and the operation system in the front of the vehicle body, centering on the engine 7 which is the drive source in the center of the vehicle body, and directly above the rear wheels 6 which are the steering wheels. Since the grass bag 16 as shown in the figure is arranged in the space formed in the lawn mower 1, there is no need to provide the grass bag 16 at the rear of the vehicle body as in the conventional case, and the grass bag 16 can be integrated with the lawn mower 1. This contributes to reducing the size and weight of the lawn mower 1 as a whole, and the front and rear balance of the lawn mower 1 centering around the engine 7 and the seat 12 above it is very good.

Furthermore, as described above, the engine 7, which is a drive source, is mounted approximately in the center of the vehicle body frame 2, and the steering post lO with the seat 12 attached is provided above the engine 7 at the center of the vehicle body. The seat 12 on which the worker rides and the steering post 10 equipped with the steering handle 11 operated by the worker are integrated, and the worker rides the seat 12 while driving, operating the work, and reaping. The overall balance of the vehicle body, including the work vehicle, is greatly improved, and it is also possible to make it more compact and lightweight. Further, since the steering post 10 is provided above the engine 7 and extends upward and forward of the vehicle body, a space is formed in the front of the vehicle body, that is, between the steering post 10 and the front wheels 5, and as described above, a space is formed in this space. It is possible to centrally arrange various mechanisms for the transmission system and operation system, such as the transmission case 13, the speed change lever 15, and the hide adjust lever 17, instead of distributing them on the seat post, fender, etc. as in the past. Driving and lawn mowing work can be done easily and efficiently without the need for it.

The engine 7 is not housed in the bonnet or in the seat post together with the transmission case as in the past, but is mounted outside in the approximate center of the vehicle body, for example, because it has a mounting structure similar to that of a two-wheeled vehicle. The cooling effect of the engine 7 is also very efficient.

In addition, in this embodiment, since the front wheels 5 are configured as driving wheels and the rear wheels 6 are configured as steering wheels, the treads of the left and right rear wheels 6, which are steering wheels, are made narrower than the treads of the front wheels 5. For example, the steering radius becomes smaller, the steering performance improves, and the vehicle becomes extremely maneuverable.

〔Effect of the invention〕

As described above, the present invention includes an engine mounted approximately in the center of a vehicle body frame on which front wheels and rear wheels are arranged, and a vertically movable canter deck equipped with a cutter blade installed below the engine. A steering post with a seat attached above the engine extends from the rear of the vehicle body frame toward the front and upward, forming a space between it and the front wheels in which a transmission case or the like can be placed, and directly above the rear wheels. is equipped with a grass bag to store the cut grass, making it possible to make the riding lawn mower more compact.
Moreover, since the grass bag that stores the grass clippings is constructed as a part of the lawn mower, it looks good and is lightweight, improving the overall balance of not only the vehicle itself but also the lawn mower operator. It is possible to provide a riding lawn mower with a completely new structure that has never been seen before in conventional lawn mowers of this type, and can be maneuvered and operated lightly and easily with the feeling of a two-wheeled vehicle.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention; FIG. 1 is a side view, FIG. 2 is a perspective view, and FIGS. 3 and 4 are perspective views showing a conventional example. 1... Riding lawn mower, 2... Body frame, 3...
Floor, 4...Fender, 5...Front wheel, 6...Rear wheel, 7...Engine, 8...Cutter deck, 9...
... Cutter blade, 10... Steering post, 11... Steering handle, 12... Seat, 13... Mission case, 14... Storage post, 15... Gear shift lever, 16... glass bag, 1
7...Hide adjustment lever, 18...Parking brake lever, 19...Clutch lever-120.
...Brake lever, 21...Step bar.

Claims (1)

[Claims] An engine is mounted approximately in the center of the vehicle body frame where the front wheels and rear wheels are arranged, and a vertically movable cutter deck containing a cutter blade is provided below the engine, and a seat is attached above the engine. A steering post extends forward and upward from the rear of the vehicle body frame to form a space between it and the front wheels in which a transmission case or the like can be placed, and a glass for storing cut grass directly above the rear wheels. A riding lawn mower characterized by being equipped with a bag.