JP3885427B2 - Rotary tiller - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a rotary tiller that mainly performs a walking type tilling work by providing a tilling part at a front part and a driving wheel at a rear part and mounting an engine between the tilling part and the rear driving wheel.
[0002]
[Prior art]
Conventionally, a rotary tiller of a type in which a tilling part is provided at the front part and a driving wheel is provided at the rear part, and an engine is mounted between the tilling part and the rear driving wheel, mainly for performing walking type tilling work. .
However, the conventional rotary tiller has a problem that the handle column is loose at the time of assembly , for example.
[0003]
[Problems to be solved by the invention]
The present invention has been made to solve the above conventional problems, and has as its object a structure mounted firmly handle struts not a rattle to set Tatsutoki, further to the handle post An object of the present invention is to provide a rotary tiller that can reduce the number of parts by integrally providing a panel for a change lever.
[0004]
[Means for Solving the Problems]
In order to solve the above problems, the present invention provides a rotary tiller in which a tilling part is provided at the front part and a driving wheel is provided at the rear part, and an engine is mounted between the tilling part and the rear driving wheel. The support frame for mounting the handle post is projected upward from the rear of each left and right transmission case to form a pair of left and right, and when assembled, when the left and right transmission cases are combined , with you formed between gap, it is characterized in that Ru is provided integrally with the panel change lever on the side of the handle post.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a side view showing a configuration of a rotary tiller according to the present invention.
As shown in FIG. 1, the rotary tiller 1 according to the present invention rear-drives the tilling section 3 in front of the transmission case 2 (left side in the figure), the transmission input shaft in the center, and the rear (right side in the figure) right and left. The wheels 4 are provided side by side in a substantially horizontal direction. The engine 15 mounted on the upper part of the transmission case 2 is located between the tilling part 3 and the rear drive wheel 4.
[0006]
A driving handle 6 and a change lever 10 are respectively disposed at the rear of the transmission case 2. The change lever 10 can be divided at the position of the fixing pin 11. A handle 14 is attached to the rotary cover 13 at the front of the tiller.
[0007]
Here, the configuration of the handle 6 will be described.
2 is a view in the direction of arrow A of the handle 6 of FIG. 1, FIG. 3 is a partially enlarged view of FIG. 2, and FIG. 4 is an enlarged view of a connection portion between the handle 6 and the handle column 5.
The handle 6 is attached to the distal end portion of the handle column 5 and is supported rotatably about the handle rotation shaft 8 at the distal end portion of the handle column 5. In the width direction of the handle 6, a bar 7 that functions as a reinforcement and a handle is attached. Also, flange plates 9 and 9 for fixing when the handle is folded are provided on the left and right sides of the lower end of the handle 6, respectively. The handle 6 is fixed to the handle position 6A by the fixing knob 12 during operation.
[0008]
When the handle 6 is rotated downward about the rotation shaft 8, the holes 9 </ b> A of the left and right flange plates 9, 9 provided in the handle 6 are rotated to the position 16 </ b> A of the hole of the handle column 5, The handle column 5 is fixed by the fixing knob 12 so as to be sandwiched from both sides. Thus, the handle 6 is fixed at the handle position 6B when folded. As described above, when the tiller 1 is moved and stored, the handle 6 can be folded to be compact. At this time, the handle 14 of the rotary cover 13 and the bar 7 of the handle 6 can be lifted with both hands.
[0009]
Next, the mounting structure of the handle column will be described.
FIG. 5 is an arrow view of the tiller when viewed from the back, showing the handle strut mounting structure.
The transmission case 2 is made up of two left and right divided cases 2A and 2B made of sheet metal, and the left and right cases are matched when assembled. A pair of left and right support frames 17A and 17B project from the rear portions of the left and right transmission cases 2A and 2B in an obliquely upward direction. The pair of left and right support frames 17A and 17B are for mounting the handle column 5, and the handle column 5 is fixedly supported by being sandwiched from both sides by the left and right support frames 17A and 17B. When the left and right transmission cases 2A and 2B are fitted together at the time of assembly, a slight gap D is formed on the mating surfaces of the left and right support frames 17A and 17B provided integrally therewith. It is configured as follows.
[0010]
In this way, when the left and right transmission cases 2A and 2B are aligned with each other and the lower end portions of the handle column 5 are sandwiched from both sides by the left and right support frames 17A and 17B, the left and right support frames 17A and 17B Since there is a gap D between the mating surfaces, the support frame 17 is bent by fixing a predetermined position with bolts 18 and the handle column 5 is firmly fixed and held without rattling.
[0011]
Next, the change lever panel will be described.
FIG. 6 is a side view of the tiller of FIG. 1 viewed from the opposite side, and FIG. 7 is a plan view showing the mounting structure of the change lever panel.
That is, the change lever panel 19 is integrally provided on the right side (that is, the change lever 10 side) side portion of the handle column 5. More specifically, a plate-like stay 20 is attached to a predetermined position on the right side of the handle column 5 by welding or the like, and the change lever panel 19 is attached to the stay 20 with screws or the like (see FIG. 7). Thus, by providing the change lever panel 19 integrally with the handle column 5, the structure is simple, the number of parts is reduced, and the cost can be reduced.
[0012]
Next, an engine base for mounting the engine will be described.
As described above, the transmission case 2 is a system in which the two cases 2A and 2B divided into the left and right are combined (see FIG. 5). The upper surfaces of the transmission cases 2A and 2B are flat, and the engine base 21 (see FIGS. 1 and 6).
In other words, by adopting a structure in which the transmission case 2 and the engine base 21 are integrated, the center of gravity can be lowered, and the work can be stably performed during tillage.
[0013]
【The invention's effect】
As described above in detail, according to the present invention, in the rotary tiller, the transmission case is divided into left and right parts, and the support frame for attaching the handle column is directed upward from the rear part of the left and right transmission cases. A pair of left and right projections are provided so that a gap is formed between the left and right support frames when assembling the left and right transmission cases together. The handle column held between the left and right support frames is bent and firmly held without rattling.
Further, by integrally providing the change lever panel on the side of the handle post for attaching the driving handle, the structure is simple, the number of parts is reduced, and the cost can be reduced.
[Brief description of the drawings]
FIG. 1 is a side view showing a configuration of a rotary tiller according to the present invention.
FIG. 2 is a view in the direction of arrow A of the handle 6 of FIG.
FIG. 3 is a partially enlarged view of FIG. 2;
4 is an enlarged view of a connection portion between the handle 6 and the handle column 5. FIG.
FIG. 5 is a view showing an attachment structure of a handle post, as seen from the back of the tiller.
FIG. 6 is a side view of the rotary tiller according to the present invention as viewed from the side opposite to FIG.
FIG. 7 is a plan view showing a mounting structure of a change lever panel.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Rotary tiller 2 Transmission case 3 Tillage part 4 Rear drive wheel 5 Handle column 6 Handle 7 Bar 8 Handle rotating shaft 9 Flange plate 10 Change lever 12 Fixing knob 13 Rotary cover 15 Engine 17 Support frame 19 Change lever panel 20 Stay 21 Engine base

Claims (1)

In a rotary tiller (1) provided with a tiller (3) at the front and a drive wheel (4) at the rear, and mounted with an engine (15) between the tiller (3) and the rear drive wheel (4) ,
The transmission case (2) is divided into left and right parts, and a support frame (17) for mounting the handle column (5) is provided projecting upward from the rear of each of the left and right transmission cases (2A, 2B). and a pair, during assembly, the right and left transmission case (2A, 2B) left and right supporting frames when combined with each other (17A, 17B) with you formed between gap between,
Rotary tiller according to claim Rukoto provided integrally with the shift lever panel (19) on the side of the handle struts (5).

Images