JPS63245614A - Grass bag structure of 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] [Field of Industrial Application] The present invention is designed to reduce the size and weight of a lawn mower by configuring a grass bag for storing cut grass as a part of a lawn mower, while reducing the grass clip storage capacity of the grass bag. The present invention relates to a new riding lawn mower which can increase the amount of water and improve the balance of the entire vehicle body including the operator.

[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 advantage 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 of lawn.

In order to solve the above-mentioned problems, a riding-type lawn mower as shown in FIGS. 5 and 6, for example, has been provided. Describing the structure of this riding type lawn mower, the lawn mower 30 shown in FIG. The steering post 33 is integrated with the bonnet 34 housing the engine 31 and is provided approximately in the center of the vehicle body, and the seat post 35 provided to cover the transmission case 32 is provided at the rear of the vehicle body. Sixth, the lawn mower 50 shown in the figure has both an engine and a transmission case mounted approximately in the center of the vehicle body frame, and a steering post 51 is installed upright in front of the vehicle body and is provided to cover the engine and transmission case. The seat post 52 is attached approximately to the center of the vehicle body. And which type of lawn mower 8i30.50
Normally, a cutter deck 36,53 housing a canter blade for cutting grass, grass, etc., for cutting grass, grass, etc. is disposed below the vehicle body frame approximately at the central lower surface of the vehicle body, and is movable up and down.

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 A30.50, the front wheel 38 of the lawn mower 30.50
．． 55 and the wheel base of the rear wheel 39.56, the body frame extends in a plane over the entire length in the front-rear direction.
9.56) was an inevitable configuration.

In this way, this riding-type lawn mower A30.50 allows the operator to mow the lawn while sitting on the seat 37.54 while the operator is mowing the lawn, reducing worker fatigue and making it possible to continuously mow a large area. It can be said that it is suitable for carrying out 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.

Furthermore, there were other 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 bang 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.
7, the grass bag 40.57 and the shooter duct 43.61 protrude significantly toward the rear including the sides of the lawn mower 30.50. Furthermore, there was a disadvantage that the size and weight of the device also increased.

In addition, in conventional lawn mowers in which the grass bag 40.57 is attached to the rear end of the vehicle body, the grass bag 40.57 is extended behind or to the sides of the rear drive wheel. Increasing the storage capacity of the glass bag 40.57 has a limit due to the increase in vehicle weight, the balance of the vehicle body, the ease of work, etc., and there is an inconvenience that the glass bag 40.57 cannot be made larger than necessary.

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, There are many models where the front wheel 38.55 is the steering wheel (
, generally these left and right front wheels are 38.55 and rear wheels are 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 engine as the drive source and the transmission case as the transmission mechanism are arranged at predetermined positions in the front or rear of the vehicle body, the bonnet 34 or seat posts 35, 52 that house them are raised at predetermined positions on the vehicle body frame. As a result, 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 post 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.

Furthermore, since the seat 37.54 on which the worker rides is arranged on the road side in the area where the engine 31 and/or the transmission 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 designed to be small and lightweight, and has a small turning radius, making it suitable for mowing work ranging from narrow mowing areas to vast mowing areas.
Moreover, while the grass bag for storing cut grass is configured as part of the lawn mower, the storage capacity of the grass bag is increased, improving the overall balance of not only the vehicle itself but also the lawn mower operator. This was developed in an attempt to provide a completely new riding lawn mower.

C Structure of the Present Invention] In order to achieve the above-mentioned object, the present invention is configured as a drive shaft with two front wheels and a steering shaft with two wheels or one wheel with a tread of the rear wheel narrower than the tread of the front wheel. , an engine is mounted approximately in the center of the vehicle body frame, a vertically movable cutter deck equipped with a cutter plate is provided below the engine, and a steering mast with a seat attached above the engine is mounted on the vehicle body frame. Extending upward from the rear to the front, forming a space between the front wheels in which a transmission case etc. can be placed, and directly above the rear wheels extending to the rear and/or side of the rear wheels. The gist of the present invention is that a glass bag having a section formed therein is provided.

[Embodiment] Hereinafter, an embodiment of a riding lawn mower according to the present invention will be described with reference to the drawings.

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

1 is a riding lawn mower 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 driving wheels, are mounted to the front of the vehicle body frame 2, and left and right rear wheels 6, which are steering wheels, are pivoted to the rear of the vehicle body frame 2, with their treads being narrower than the treads of the front wheels 5. It becomes.

2 is 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, etc., and is also transmitted to a rotation transmission section (not shown).
A cutter plate 9, which will be described later, is rotationally driven through the cutter plate 9. Reference numeral 8 denotes a cutter deck disposed below the engine 7 and containing a cutter plate 9, and this cutter deck 8 is disposed inside the floor 3 below so as to be movable up and down.

Reference numeral 10 denotes a steering post extending upward and forward from the center upper end of the fender 4 above the engine 7, thereby creating a space between it and the front wheel 5 in which a transmission case 13 (described later) is disposed. It is formed. This steering post 10 has a steering handle 11 attached to its tip, and a seat 12 on which a worker rides is integrally attached to its base end. Reference numeral 13 denotes a mission case disposed in the space between the front wheels 5 and the steering post IO. (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 3 is protruded from the storage post 14 as shown in the figure. ing.

A grass bag 16 is provided directly above the rear wheel 6 to store cut grass, grass, etc., and is detachably attached to the rear of the fender 4 that surrounds the engine 7. As shown in the figure, this glass bag 16 has approximately rectangular sides and has a reinforcing plate 17 attached to its bottom. It extends to surround the rear of the rear wheel 6. The third part shows a cross-sectional view of the same, and Fig. 4 shows an example in which the rear wheel 6 is configured as a single wheel, and is the same as the example described above (the rear edge of the glass bag 16 is hung down). At least the glass bag 16 may be provided so as to extend and surround the rear of the rear wheel 6.
The storage volume can be doubled compared to when using two wheels. Although not shown, the glass bags 16 are provided on both sides of the rear wheel 6.
It is also possible to hang down and extend so as to surround the sides of the rear wheel 6 or both the rear and sides.

18 is a hide adjustment lever provided on the side of the gear shift lever 15, 19 is a parking brake lever protruding from the side of the storage post 14, and 20 is a clutch lever 121.
2 is a brake lever, and 22 is a step bar.

As described above, the present invention centrally arranges various mechanisms such as a transmission system and an operation system at the front of the vehicle body centering around the engine 7 which is a drive source in the center of the vehicle body, and above the rear wheels 6 which are 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 balance between the front and rear of the lawn mower 1 centering around the engine 7 and the seat 12 above the engine 7 becomes very good.

Furthermore, by providing the glass bag 16 hanging behind or to the side of the rear wheel 6, it is possible to make the glass bag 16 have a step toward the rear of the rear wheel 6 and a width greater than the tread of the rear wheel 6. This part increases the storage capacity of the cut grass and maintains a good balance with the front part of the vehicle body. This is because with conventional lawn mowers that have grass bags installed behind the rear wheels, there is a limit to increasing the capacity of the grass bags more than necessary due to increased vehicle weight, and even if the grass bags 16 are installed directly above the rear wheels 6, Even in this case, if the rear wheel 6 has the same tread as the front wheel 5, installing the glass bag j6 behind the rear wheel 6 or above the tread (vehicle body width) will affect the balance of the vehicle, stability during driving, and work. Compared to the fact that the storage capacity of the grass bag 16 is limited due to the ease of cleaning, it is possible to remove more grass, grass, etc. It has the advantage of being able to be stored in the glass bag 16.

In addition, in the present invention, the front wheels 5 are configured as driving wheels, and the rear wheels 6 are configured as steering wheels, and the treads of the left and right rear wheels 6, which are steering wheels, are narrower than the treads of the front wheels 5, or the rear wheels 6 are configured as steering wheels. Since it is configured as a single wheel, the steering radius of the rear wheel 6 is reduced, improving steering performance and making it possible to turn very easily even in a narrow cutting area.

Furthermore, an engine 7 as a drive source is mounted approximately in the center of the vehicle body frame 2, and a seat 1 is mounted above the engine 7 at the center of the vehicle body.
2, the engine 7 is located at the center of the vehicle body, and the seat 12 on which the worker rides and the steering post IO operated by the worker are integrated, and the worker rides while straddling the seat 12. , work operation,
It is designed to perform reaping work, and the balance of the entire 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 toward the front and upper side of the vehicle body, a space is formed in the front of the vehicle body, that is, between the steering post IO and the front wheel 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 18, 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.

〔Effect of the invention〕

As described above, the present invention is constructed as a maneuverable vehicle in which the front wheels are two drive wheels, the rear wheel tread is narrower than the front wheel tread, two wheels or one wheel, and the engine is mounted approximately in the center of the vehicle body frame. A vertically movable cutter deck equipped with a cutter plate is provided below the engine, and a steering post with a seat attached is provided above the engine, extending forward and upward from the rear of the vehicle body frame. A space is formed between the front wheels in which a transmission case or the like can be placed, and a glass bag is provided directly above the rear wheels, the glass bag having an extension to the rear and/or side of the rear wheels. This makes it possible to make riding lawn mowers more compact, and since the grass bag that stores the grass clippings is part of the lawn mower, it improves the overall balance of not only the vehicle itself but also the lawn mower operator. It has a good appearance, is lightweight, and is compact and has a large storage capacity for the grass bag, making it possible to perform reaping work very efficiently. Furthermore, it is possible to maneuver and operate the lawn mower lightly and easily with the feeling of a two-wheeled vehicle, making it possible to provide a riding lawn mower with a completely new structure that has never been seen in conventional lawn mowers of this type.

[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, FIGS. 3 and 4 are sectional views of main parts, and FIGS. 5 and 6 are conventional views. It is a perspective view showing an example. ■... Riding lawn mower, 2... Body frame, 3...
Floor, 4...Fender, 5...Front wheel, 6...Rear wheel, 7...Engine, 8...Cutter deck, 9...
...Cutter plate, lO...Steering post, 11...Steering handle, 12...Seat, 13...Mission case, 14...Storage post, 15...Shift lever, 16... glass bag, 1
7... Plate, 18... Hide adjustment lever, 19... Parking brake lever, 20... Clutch lever, 121... Brake lever, 22...
Stepba Ichiban

Claims (1)

[Claims] The front wheels are two driving wheels, and the rear wheels have a narrower tread than the front wheels as two wheels or one steering wheel.The engine is mounted approximately in the center of the vehicle body frame, and the engine is mounted below the engine. A vertically movable cutter deck with an internal cutter plate is provided, and a steering post with a seat attached above the engine is provided extending forward and upward from the rear of the vehicle body frame, and a transmission post is provided between the front wheels and the steering post. A riding lawnmower, characterized in that a space is formed in which a case or the like can be placed, and a grass bag is disposed directly above the rear wheel, the grass bag having a rear and/or sideward extension of the rear wheel. Glass bag structure.