JPH0142985Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a cutter housing lifting device for a riding lawn mower.

(Prior art) Some riding lawn mowers have an engine mounted on the middle part of the left and right frame members that extend in the longitudinal direction of the machine, and a seat placed above the engine, which allows the center of gravity of the machine to be set at the center of the machine. At the same time, the space under the seat can be used effectively.

On the other hand, a cutter housing is disposed below the middle of the frame member, and the cutter housing is supported so that it can be raised and lowered in order to adjust the mowing height of the lawn.In the past, a shaft was installed between the left and right frame members. It was supported by a shaft, and a link mechanism connected to the cutter housing was connected to the shaft inside the frame, and an operating lever was provided.

(Problems to be Solved by the Invention) However, when the link mechanism and the operating lever are disposed on the shaft inside the frame, the arrangement of the mounted items is restricted due to the need to avoid interference with the mounted items such as the engine. Furthermore, since the operating lever is exposed from the body panel that covers the mounted items including the engine below the seat, the operating lever becomes an obstacle when opening or removing the body panel for maintenance of the mounted items. Furthermore, if the operating lever is placed close to the feet of the occupant when seated in the seat, there may be interference with the occupant's feet, and operability may not necessarily be good.

Therefore, the purpose of the present invention is to eliminate the problem of interference with the loaded items, facilitate the placement of the loaded items, and eliminate the need for the operating lever to become an obstacle when opening/closing the body panel, which is advantageous in terms of maintenance. In addition, the control lever does not have to face the foot area,
To provide a cutter housing lifting/lowering device for a riding working machine which is improved in terms of operability.

(Means for Solving the Problems) In order to achieve the above object, the present invention mounts the engine 6 on the middle part of the frame 2, arranges the seat 7 above it, and furthermore, below the middle part of the frame 2, the engine 6 is mounted. In a riding lawn mower equipped with a cutter housing 12, a shaft 15 extending in the left-right direction of the machine body is pivotally supported on left and right frame members 3, 3 behind the engine 6, and shaft ends 16, 17 are attached to the frame members 3, 3. Projecting outwardly, the shaft end 16,1
7 and the cutter housing 12 by the link mechanism 2
1 and 21, and the shaft end 16
It is characterized in that an operating lever 18 is provided.

(Example) Examples will be described below based on the accompanying drawings.

FIG. 1 is a schematic side view of the riding lawn mower, and FIG. 2 is a plan view of the same, in which the main frame 2 of the riding lawn mower 1 includes left and right frame members 3, 3 extending in the longitudinal direction of the machine.
It consists of wheels 4 on the front, rear, left and right sides of the main frame 2, a handle 5 on the front part, an engine 6 and other auxiliary equipment on the middle part,
A seat 7 is placed above the seat 7, and the engine 6 and auxiliary machinery disposed thereon are covered by a body panel 8, making effective use of the space under the seat 7. In addition, the transmission case 9 is located at the rear of the frame 2, and the internal cutter blade 1 is located below the middle.
A cutter housing 12 containing a cutter 1 is provided. The cutter blade 11 is rotationally driven via a belt pulley mechanism 10, and a bracket 13 is provided at the rear part of the upper wall of the cutter housing 12, facing the outside of the left and right frame members 3, 3.
13 have been established.

In such a riding lawn mower 1, a shaft 15 extending in the left-right direction of the machine body is pivotally supported by penetrating through the left and right frame members 3, 3 immediately behind the engine 6 mounted on the intermediate portion of the frame 2, and Ends 16, 17 project outwardly from frame members 3, 3. In the embodiment, the left end portion 16 of the shaft
protrudes larger than the right end portion 17, and an operating lever 18 is fixed to the tip of the left end portion 16 of the shaft. In this way, the operating lever 18 is arranged on the left side of the body panel 8 with a sufficient distance therebetween.

The left and right frame members 3, 3 have shaft ends 16, 17 that protrude outward, and both brackets 13, which are provided on the cutter housing 12,
13 are interlocked and connected by link mechanisms 21, 21.

That is, as shown in FIG. 3, both shaft ends 16,
Plates 22, 22 are fixed to 17, long holes 23, 23 are formed at the tips of the plates 22, 22,
One ends of the rods 24, 24 are bent and engaged with the elongated holes 23, 23.

On the other hand, the brackets 13, 13 have arms 25,
The rear ends of the arms 25, 25 are pivotally connected with pins 26, 26, and the front ends of the arms 25, 25 are attached to the outer surfaces of the left and right frame members 3, 3 below the front of the engine 6 with pins 27, 2.
It pivots at 7.

The other ends of the rods 24, 24 are pivotally connected to the intermediate portions of the arms 25, 25 by pins 28, 28.

1 is a link parallel to the arm 25, and the link 29 connects the front end of the frame 2 and the front end of the cutter housing 12.

In this way, the shaft 15 is pivotally supported on the left and right frame members 3, 3 at the rear of the engine 6 mounted on the middle part of the frame 2, and the shaft ends 16, 17 on the outside of the frame 2 and the cutter housing 12 are connected by a link mechanism. 21, 21, and an operating lever 18 is provided at one end 16 of the shaft, so that only the shaft 15 passes through the inside of the frame 2, so the engine 6 and other auxiliary equipment can be easily operated without being restricted. Can be placed. Since the operating lever 18 is arranged at a sufficient distance laterally from the body panel 8, the lever 18 does not become an obstacle when opening or closing the body panel 8, which is advantageous in terms of maintenance. Become. Further, since the operation lever 18 does not face near the feet of the occupant when seated on the seat 7, there is no risk of interference and manual operation can be easily performed from the side of the occupant.

Incidentally, the link mechanism is not limited to the one in the embodiment, and it goes without saying that any configuration can be adopted.

(Effects of the invention) As described above, according to the invention, since the operating lever and the link mechanism are arranged especially on the outside of the left and right frame members, it is easier to arrange the loaded items on the frame.
It is highly practical as it makes it easier to open and close the body panel, which in turn improves maintenance and operability.

[Brief explanation of drawings]

FIG. 1 is a schematic side view of the riding lawn mower, FIG. 2 is a plan view thereof, and FIG. 3 is a plan view of the lifting device. In addition, in the drawing, 3 is a frame member, 6 is an engine, 7 is a seat, 8 is a body panel, 9 is a transmission case, 10 is a belt pulley mechanism, 11 is a cutter blade, 12 is the same housing, 15 is a shaft, 16, 17 is the same end portion, and 21 is a link mechanism.

Claims (1)

[Scope of utility model registration request] In a riding lawn mower, the engine is mounted on the middle part of the left and right frame members extending in the longitudinal direction of the machine body, a seat is arranged above the engine, and a cutter housing is arranged below the middle part of the frame member so that it can be raised and lowered. A shaft extending in the left and right direction is pivotally supported on the left and right frame members at the rear of the engine, and the ends of the shaft are projected outward from the frame members, and the shaft ends and the cutter housing are connected by a link mechanism, and the ends of the shaft are A cutter housing lifting device for a riding lawn mower, characterized in that a control lever is provided at the bottom of the cutter housing.