JPH05246256A - Mid-mount type lawn mower - Google Patents

Abstract

PURPOSE:To adjust the position of the center of gravity of a machine body, and to make the running movement in a swift condition, by loading a battery and a fuel tank to an extension step, in the condition to position in an underseat space which is formed of the extension step and a driver seat. CONSTITUTION:A rear wheel shaft 17 is provided at the lower side of an engine 5 loaded at the rear side of a machine body, while a front wheel shaft is provided at the lower side of a control member B at the front side of the machine body, and the control member B is composed of a driver seat 13 just in front of the engine 5, a front panel, and a step floor 12. The step floor 12 is extended to the lower position of the driver seat 13 so as to form an extension step 12A, on which a battery 15 and a fuel tank 16 are loaded in the condition positioning in an underseat space which is formed of the extension step 12A and the driver seat 13. As a result, the rear side ballance of the machine body center of gravity owing to loading the engine at the rear side is improved, and at the same time, a swift running maneuverability is obtained by a concentration of mass resulting from a summarized arrangement of the heavy substances including the engine and the like.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a small mid-mount lawn mower having an engine mounted on the rear portion thereof.
Regarding rational aircraft layout.

[0002]

BACKGROUND OF THE INVENTION Japanese Patent Application No. 3-33 filed by the present application.
No. 3099, a small mid-mount type with good handling characteristics similar to a walk-type lawn mower in order to reduce the labor of the operator in lawnmower work in a relatively small area suitable for a walk-type lawn mower. Lawn mowers have been proposed. That is, the rear axle is arranged below the engine mounted on the rear of the fuselage, and the front axle is arranged below the control section arranged at the front of the fuselage, and the front axle is arranged at the position just before the engine. A steering section is composed of a driver's seat, a steering section that is installed upright from the front end of the machine body, and a step floor located between the steering section and the driver's seat.

[0003]

In the lawnmower according to the above-mentioned technique, the space below the driver's seat is used as a space for arranging the equipment, but its structure has not been mentioned. It is an object of the present invention to efficiently arrange a device in a space under a driver's seat in order to contribute to downsizing of a small mid-mount lawn mower.

[0004]

In order to achieve the above object, the present invention has a rear axle disposed below an engine mounted on a rear portion of an airframe and a control section disposed at a front portion of the airframe. A front axle located below the vehicle, a driver's seat provided immediately in front of the engine, a steering section that is equipped to start up from the front end of the machine, and a step floor located between the steering section and the driver's seat. A state in which the control section is configured from the above and the step floor is extended to a position below the driver's seat to form an extended step, and the extended step is located in a space under the seat formed by this and the driver's seat. Is equipped with a battery and a fuel tank.

[0005]

That is, a battery and a fuel tank, which are heavy objects, are arranged under the driver's seat to improve the rear balance of the body weight center by mounting the rear part of the engine, and the mass of the heavy objects including the engine is arranged. By concentrating the vehicle, it is possible to obtain a light running maneuverability. By the way, a fuel tank or a battery, which is full of heavy fuel, is usually mounted and mounted on the machine body frame by being held by a dedicated receiving member. On the other hand, in the present invention, the strong step floor is extended below the driver's seat, and the extended step portion is also used as the receiving member for the fuel tank and the battery, so that the dedicated receiving member can be omitted. Become.

[0006]

Therefore, by devising the structure focusing on the fact that the step floor is a strength member, the fuel tank and the battery under the driver's seat, which contribute to the optimization of the center of gravity of the machine body and the agile running maneuverability, can be realized. Due to the multi-functional structure of the step floor, the layout can be provided as a rational lawnmower that is cost-effective.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. Fig. 5 shows a side view of the mid-mount type lawnmower, and Fig. 1 shows a cross-sectional view of the rear part of the body.
Is a drive rear wheel, A is a drive part, B is a control part, C is a transmission part, 3
Is a mower and 4 is an airframe. The prime mover A includes a vertical engine 5, an engine bonnet 6, a muffler 7,
It consists of an air cleaner 8, a carburetor 9, etc.,
It is mounted on the body frame 4. As shown in FIG. 4, the machine body frame 4 has a lateral cross-sectional shape formed by the left and right end channel portions 4a, 4a and a flat surface portion 4b that integrates them, and has a lateral width that extends across the left and right sides of the machine body. It is composed of a sheet metal member. The control unit B includes a front panel (corresponding to a steering unit) 11 having a steering wheel 10, a step floor 12, and a driver's seat 13. The driver's seat 13 is located immediately in front of the engine 5, and the driver's seat is driven. A battery 15 and a fuel tank 16 are provided inside a floor cover 14 that covers the lower side of the seat 13. A front axle 33 of the front wheel 1 is located below the front panel 11. The transmission unit C projects downward from the HST (hydrostatic type continuously variable transmission, which corresponds to a transmission) 18 arranged on the rear side of the rear axle 17, the input shaft 19 of the HST 18, and the machine body frame 4. It is composed of a first belt interlocking mechanism 21 extending over the crankshaft 20, a second belt interlocking mechanism 23 extending over the crankshaft 20 and the cutting blade axis 22 of the mower 3, and the like, and includes a rear axle 17 and a differential mechanism 24. Is HST18
Is integrally provided in a casing 18a for interior of the. The casing 18a is suspended and supported by a subframe 25 fixed to the rear lower surface of the body frame 4, and the left and right side walls 25a, 25a and the rear wall 25b of the subframe 25 are supported.
The first belt interlocking mechanism 21 is disposed in a substantially closed space surrounded by the casing 18a.

Next, the control section B will be described in detail. As shown in FIGS. 1 to 3, the step floor 12 is a member having a U-shaped cross section and made of a reinforced resin material containing glass fibers, and is mounted so as to cover the machine body frame 4.
The step floor 12 is extended to a position below the driver's seat 13 to form an extended step portion 12A, and a drop-in portion 12a formed in the extended step portion 12A is provided with a driver's seat 13 and an under-seat space. The battery 15 and the fuel tank 16 are mounted in the state of being located at.
Reference numeral 26 is a drain pipe for discharging the spilled fuel.
The driver's seat 13 is rotatably supported around a lateral fulcrum P _{1 on the} front part of the floor cover 14 composed of left and right side wall parts 14a, 14a, a front wall part 14b, and an upper wall part 14c, and also has a body frame 4 The rear spring portion 13a is mounted on the bent upper surface 28a of the upper portion of the support plate 28 raised from the flat surface portion 4b. The floor cover 14 is made of a reinforced resin, and is attached to the machine body frame 4 so as to be able to be tilted forward around the lateral fulcrum P _{2 at the} lower portion of the front part thereof. That is, when refueling or checking the battery fluid, the seat locking hook (not shown) is removed to open and close only the driver's seat 13, and the battery 15 is removed or the fuel tank 16 itself is maintained. The entire cover 14 is tilted forward and moved. In addition, the control boxes 29, 29 on the left and right of the driver's seat 13 are the body frame 4
Is a fixed member attached to the channel portion 4a of
The engine bonnet 6 made of resin is bolted to the rear portion of the upper wall portion 14c of the floor cover 14 and has a structure that can be opened and closed around the lateral support P ₂ together with the floor cover 14. Therefore, the engine bonnet 6 is formed with notches 30 and 30 for the control box 29.
Even if the engine bonnet 6 is opened and operated, the left and right control boxes 29, 29 are left on the body frame 4 side. As shown in FIG. 4, the space between the machine body frame 4 and the step floor 12 and the space inside the channel portion 4a are used as a passage place for various wire harnesses 31.

It should be noted that reference numerals are given in the claims for convenience of comparison with the drawings, but the present invention is not limited to the configurations of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a structure of a rear portion of an airframe.

FIG. 2 is a plan view of the rear part of the airframe.

FIG. 3 is a sectional view showing a structure below a driver's seat.

FIG. 4 is a cross-sectional view showing a wiring harness arrangement state.

FIG. 5: Side view of a mid-mount lawn mower

[Explanation of symbols]

 5 Engine 11 Steering Section 12 Step Floor 12A Extension Step Section 13 Driving Seat 15 Battery 16 Fuel Tank 17 Rear Axle 33 Front Axle B Control Section

Claims (1)

[Claims] 1. An engine (5) mounted on a rear portion of an airframe
A rear axle (17) is disposed below the vehicle, and a front axle (33) is disposed below the control section (B) disposed at the front of the fuselage, and the front axle (33) is provided in front of the engine (5). A driver's seat (13) to be deployed, a steering part (11) to be installed from the front end of the fuselage, and a step floor (12) located between the steering part (11) and the driver's seat (13). While configuring the control section (B) from
The step floor (12) is extended to a position below the driver's seat (13) to form an extended step portion (12A), and the extended step portion (12A) includes the extended step portion (12A) and the driver seat (13). A mid-mount type lawnmower equipped with a battery (15) and a fuel tank (16) in a position below the formed seat.