JPH0325208Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a clutch lever for power agricultural machinery such as rice transplanters and seeding machines.

Conventional technology In the clutch lever of power agricultural machinery, especially walk-behind rice transplanters and seeding machines (submerged soil seeding machines),
In order to maintain the ON or OFF state, the clutch is generally provided with a separate hook, cutout, or toggle mechanism for positioning and holding the clutch lever in a predetermined position.

Problems to be Solved by the Invention However, providing a separate positioning member such as a hook or toggle mechanism to the clutch in order to hold the clutch lever in the ON or OFF state as in the conventional method described above increases the number of parts. Moreover, the structure becomes complicated and large, which contributes to an increase in cost, which goes against the desire to make the aircraft more compact and reduce costs.

Means for Solving the Problems Therefore, the present invention provides a power agricultural machine equipped with a clutch lever in which one of the clutches is turned ON or OFF is in a free state and the other is held in a set state, in which the clutch lever is elastically deformed. The clutch lever has an engaged part that is removably engaged with the engaging part, and the engaging part is the head or protruding part of a fastener provided on the fixed side of the fuselage. The above-mentioned problem is solved by providing a structure in which the engaged part of the clutch lever is engaged with the engaging part on the fixed side of the fuselage to maintain the ON or OFF state of the clutch. .

Operation The clutch lever is held in the ON or OFF state by engaging the engaged portion provided on the clutch lever with an existing fastener or the like on the fixed side of the aircraft. For this reason, the hook part like the conventional one,
A positioning member such as a notch or a toggle mechanism is not required.

Embodiment The illustrated one is a submerged soil sowing machine that directly sows rice seeds in a flooded paddy field, and this sowing machine has a traveling machine A
An engine 1 is mounted on the front part of the machine, and running wheels 2 are pivotally supported on both left and right sides for vertical movement through swing cases 3, and are interlocked and connected to a tank 4 that stores seed rice and a transmission case 1a behind the wheels 2. The seeding unit 6 consisting of the seeding drive mechanism 5 etc.
A steering handle 7 is extended to the rear of the machine, and a center float 8 and side floats 8a for sliding on the rice field are provided below the machine body, and a groove plate 9, a soil plate 10, and a soil cover are provided at the float grounding part below the sowing part 6. Board 11
are arranged for each sowing row corresponding to the sowing port 4a, and the seed rice stored in the tank 4 is sequentially delivered by a predetermined amount by the rotation of a payout roll, which will be described later, as the machine runs. After falling into the groove in the soil formed by the trenching board 9, it is successively covered with soil by the subsequent cultivating soil board 10 and soil covering board 11. Reference numeral 12 denotes a gate-shaped support frame whose middle portion is fixed to the drive case 13 via a bracket 13a, and side floats 8a are connected to both ends of the support frame. The inner side surface of the tank 4 is connected to the drive case 13 via the transmission case 14, and the front surface of the tank 4 is connected to the frame 12.
On the other hand, the tank 4 is tightened and fixed at one place on the inside and at least two places on the outside by fasteners 15 and 16, so that the tightening position of the tank 4 with respect to the frame 12 has a substantially triangular shape from the front. This tank mounting structure prevents resonance on the outside of the tank 4, and is designed to eliminate the difference in seed amount between the inside and outside of the tank 4 (see FIGS. 6 and 7). Further, at least the rear plate 4b of the tank 4 is formed of a see-through plate such as a transparent plastic plate,
A plurality of long protruding stripes 4'b in the width direction of the rear plate 4b are integrally provided at regular intervals, and these protruding stripes 4'b serve both as reinforcing ribs and as a gauge for the amount of remaining rice seed. (See Figure 8).

Reference numeral 17 denotes a drive shaft rotatably supported within the transmission case 14. The drive shaft 17 is interlocked and connected to the drive side of the transmission case 1a via a chain ring and a transmission chain (not shown), and is connected to the drive side of the transmission case 1a on both the left and right sides. tank 4,
4 and extends through it. Reference numeral 18 denotes a payout roll which is loosely fitted to the drive shaft 17 in correspondence with the sowing port 4a of the tank 4, and has a plurality of grooves 18' provided on its outer circumferential surface to serve as paddy payout holes a. As shown in FIG. 5, this groove 18' has an inclined wall surface 18'a on the rear side in the rotational direction of the roll 18, that is, the side on which the seed rice is scooped up, and is fitted into the groove 18' so as to be able to move forward and backward. The convex portion 20a of the movable body 20 and the inclined surface 1
A gap b having a substantially triangular shape from the front is formed between the grooves 8'a. This gap b serves as an escape area for dust, etc. contained in the cultivated rice and seed rice of the coated rice, so that accumulation of the cultivated grains, dust, etc. in the groove is prevented, and sowing at the set seeding rate is always possible.

Now, the width l of the feeding hole a is adjusted by rotating the adjustment knob 19 and moving the movable body 20 screwed into the knob 19 forward and backward in the axial direction. Further, a pipe-shaped boss portion 18a is integrally provided on the shaft portion of the feed roll 18.
A permanently engaged portion 18'a formed at the end of the boss portion 18a
The cylindrical clutch piece 2 slides on the drive shaft 17.
1, the constantly engaging portions 21a are engaged in a manner that allows them to move forward and backward. And the above-mentioned feeding roll 18 and clutch piece 2
A compressor 22 is interposed between the clutch members 1 and 2, and a pin 23 mounted on the drive shaft 17 is removably engaged with a groove 21b provided in the clutch piece 21.

The flange portion 21c of the clutch piece 21 has a clutch rotatably supported by the transmission case 14.
A cam 24 for ON/OFF switching is in contact with the roller, and the rotation of this cam 24 connects and disconnects the transmission of power from the drive shaft 17 to the feed roll 18. 25 is a plate for preventing the cam 24 from popping out;
is fixed to. Reference numeral 27 denotes a clutch lever integrated with the cam 24, which is used to connect/disconnect the clutch for each sowing row by rotating the lever 27, and is made entirely or partially of an elastic body. The clutch lever 27 has an engaging portion c consisting of a fastener head or a protruding portion provided on the fixed side of the fuselage.
An engaged portion d is provided that removably engages with the clutch lever 27, and when the engaged portion d of the clutch lever 27 is engaged with the engaging portion c on the fuselage fixed side, the clutch is turned on or off.
It is configured to maintain the OFF state.
In this embodiment, the head 6' of the fastener 26 for fixing the plate is used as the engaging part, and the engagement hole 27' that engages with the fastener head 26' is inserted into the clutch lever 2.
7, and the engaging hole 27' is used as the engaged part d, but the engaging part c and the engaged part d in the present invention are not limited to those in the embodiment. Further, in the embodiment, a clutch lever for connecting and disconnecting power transmission to the feed roll 18 has been described as a clutch lever, but the present invention can also be adopted for other clutch levers.

28 in the figure is the feed roll 18 and the adjustment knob 19
The compressed bullet 29 interposed between them is a marker.

In the above configuration, the power transmitted from the transmission case 1a side to the drive shaft 17 in the transmission case 14 is transmitted to the pin 23, the clutch piece 21, and the constant engagement part 2.
1a and 18'a successively to a feed-out roll 18 pivotally supported in the tanks 4, 4, and as the feed-out roll 18 rotates, a predetermined amount of rice seeds in the tanks 4, 4 are fed out to the sowing port 4a. After the seeds are dropped and sown into the trenches on the rice field, the soil plate 10 and the soil cover plate 1 are
Covered with soil in 1.

In order to stop the rotation of the feed roll 18 in areas where seeding is not required when sowing along the ridge, etc., turn the clutch lever 27 corresponding to the feed roll 18 from the ON state shown by the solid line in FIG. 2 to the OFF state shown by the phantom line in FIG.
All you have to do is rotate it to the desired state. Due to this lever rotation operation, the cam 24 integrally rotates toward the clutch "off" side, so the clutch piece 21 slides on the drive shaft 17 against the compression bullet 22 toward the payout roll 18, and this This allows the pin 23 to fit into the groove 2 of the clutch piece 21.
1b and the engagement between the pin 23 and the clutch piece 21 is released, so the transmission of power to the feed roll 18 is cut off.

By the way, when the clutch lever 27 is rotated, when the clutch lever 27 comes close to the head 26' of the plate fixing fastener 26, the lever 27
When the clutch lever 27 is easily elastically deformed when the clutch lever 27 is pulled and bent toward the user as shown by the imaginary line in FIG.
7' is aligned with the head 26' of the fastener 26, and when the clutch lever 27 is released, the clutch lever 27 elastically returns to the engagement hole 2 provided in the clutch lever 27.
7' is securely fitted and locked to the head 26' of the fastener 26, so the clutch lever 27 is positioned and held in the clutch OFF state as shown by the phantom line in FIG. If the position is opposite to that in the illustrated row, the clutch lever 27 is positioned and held in the clutch ON state). Once the engagement hole 27' provided in the clutch lever 27 is fitted into the head 26' of the fastener 26, the engaged state is ensured, and the clutch lever 27 is connected to the head of the fastener 26. Unless a positive external force is applied in the direction of pulling out the clutch lever 26', the clutch lever 27 will not come off inadvertently from the head 26' of the fastener 26 even if there is vibration or shock from the machine body. Therefore, the danger of the clutch suddenly engaging due to vibrations, shocks, etc. and the working part suddenly starting to move is prevented.

Incidentally, in order to return the clutch lever 27 to the ON state, the operation described above may be performed in reverse (the clutch lever 27 is in a free state when it is ON).

Effects of the invention As mentioned above, the present invention has the effect of turning the clutch ON or
In a power agricultural machine equipped with a clutch lever in which one of the clutch levers is held in the free state and the other in the set state, the clutch lever is constituted by an elastically deformable plate, and the clutch lever is provided with a clutch lever on the fixed side of the machine body. The head or protruding part of the provided fastener is used as an engaging part, and an engaged part that removably engages with the engaging part is provided, and the engaged part of the clutch lever is engaged with the fixed side of the fuselage. Since the clutch is configured to be engaged with the clutch to maintain the ON or OFF state,
Existing parts such as fasteners on the fixed side of the fuselage can be effectively used as they are as clutch lever engagement parts, so there is no need to separately provide special lever positioning parts to maintain the ON/OFF state of the clutch. Therefore, the number of parts can be reduced accordingly, the structure can be simplified, and the airframe can be made more compact and costs can be reduced.

[Brief explanation of the drawing]

Fig. 1 is a side view of the main part, Fig. 2 is a front view of the main part, Fig. 3 is a sectional view showing the structure of the clutch, and Fig. 4 is a sectional view showing the structure of the clutch.
The figure is a front view of the feeding roll, Figure 5 is a sectional view taken along line A-A in Figure 4, Figures 6 and 7 are side and front views showing the tank mounting structure, respectively, and Figure 8 is the rear view of the tank. FIG. 9 is a perspective view showing the structure of the face plate, FIG. 9 is a rear view of the seeding unit, and FIG. 10 is an overall side view of the seeding machine equipped with the present invention. In the figure, 26 is a fastener, 26' is a fastener head, and 27
is the clutch lever, c is the engaging part, and d is the engaged part.

Claims (1)

[Scope of utility model registration request] In a power agricultural machine equipped with a clutch lever in which one of the clutches is ON or OFF is set in a free state and the other is held in a set state, the clutch lever is constituted by an elastically deformable plate,
The clutch lever is provided with an engaged part that uses the head or protruding part of a fastener provided on the fixed side of the machine body as an engaging part and removably engages with the engaging part, and 1. A clutch lever for a power agricultural machine, characterized in that the clutch is configured to maintain the ON or OFF state of the clutch by engaging the engaging portion with the engaging portion on the fixed side of the machine body.