JPS5873473A - Side clutch shifter - Google Patents

Abstract

PURPOSE:To prevent a shifter from damaging, by interlocking a slide piece in a link motion with a slide clutch to a lock pin securing a handle, while putting the slide piece back to an on-position of the clutch by means of locking release operation on the lock pin. CONSTITUTION:A slide piece 15 of a shifter 1, which performs the change-over of a side clutch, is moved up and down like a seesaw motion by a clutch lever via a wire 10, an arm 23 and a pin 24. In addition, a handle boss 20 is rotatably supported at a sleeve 17 clamped to a body frame 3a. Likewise, a lock pin is set in a supporting plate 25 and a holding plate 26 secured to the boss 20 downward by spring force of a spring 29, and a pin 27 is fitly engaged in a pin bore 30a of the frame 3a. And, in accordance with pulling action of the pin 27, the pin 24 of the arm 23 is interlocked via a check arm 33 whereby the slide piece 15 is moved downward.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a side rack/teer switching device suitable for power transfer agricultural machines such as tillers that can change the direction of the handle.

Conventionally, a device has been proposed that uses a slide piece to automatically switch between left and right side clutches and clutches as the handle turns. Even if I let go of Yoshi, Side Club, and Teleper, Side Club and Chi were sometimes in a disconnected state. In this case, when one of the slide pieces is in the forward-off position and the handle direction is changed, the rotational force of the handle is directly applied to the switching device due to misalignment of the left and right slide pieces, often resulting in damage to the device.

Therefore, the present invention has a structure in which a slide piece is interlocked with the opening and the cup pin, and the system 2 side piece is returned to the inserted position of the side club and chi when the opening and the cup pin are unlocked. / The purpose of this is to provide a switching device.

Embodiments of the present invention will be described below with reference to the drawings.As shown in FIG. 6 etc. are installed, and a handle 7 that can change its direction back and forth is also installed. A side lever and a teleoper 9.9 are respectively arranged on the handle 7, and these levers 9 are connected to the main engine #4 via a wire 10.10, as shown in detail in FIGS. 2 to 5. The switching device 11 is connected to an arm 14 for operating the side clutch 13 in the transmission 6 via a wire 12.12.
is connected to. The switching device 11 is shown in FIG.
As shown in the figures to FIG. 10, the left and right slide pieces 15 and 15' are provided with upper and lower seven rank parts 15m, 15'a, 15b, and 15'b, respectively, and these slide pieces are connected to a cylinder 16. It is supported so that it can only slide freely.

Further, the tube 16 is fixed to a sleeve 17 fixed to the body frame 3a via the bottom plate 1g, and the boss 20 of the handle 7 is fixed to the sleeve 17 so as to be rotatable. A placket 21 and a pin 22 are held on the boss 20), and these arms have a wire 11 extending from the side clutch lever at the front!
! are connected to the soil flange portions 15a, 15'.
The slide pieces 15 and 15' can be moved up and down by engaging with the hinges 24 and 24, which are fixed. In addition, each of Swift Heath 15 and 15' has an outer panel 15d.

15'd is fixed! The slide piece is also interlocked with the downward movement of the bin 24. Also, the lower 7 rank portions 15b of Swift Heath l5, l5'.

15'b) (iJThe wires 12 and 12 that pass through the bottom plate 19 of each suicide arm 14 are removed.
They are connected and secured together. Note that the joint portions 15c' and 15'c of the slide pieces 15 and 15' are cut out at the portions that contact the upper solange portions.
The bins 24, 24 can be rotated without difficulty relative to the slide pieces 15.degree. 15'.

The lock pin 2 is supported by a spring 29 so as to be movable up and down on the ~ side of the boss 2o of the handle 17, and is biased and supported by a spring 29 so as to protrude downward from the support plate 25.
7 is a large number of bottle holes 30m formed in the fuselage frame 31
, 30b... can be engaged with any one of them. Further, a handle rotation lever 31 is rotatably supported on the holding plate 26, and one end of the lever 31 is attached to the handle cover 3.
2 and can be manually operated, and left and right check arms 33, 33 are fixed to the rotating base, respectively. The left and right restraining arms 33 extend upward to operate the slide pieces 15 and 15', respectively.
One check arm 33 facing upward is connected to the lock bin 27 via a bin 35. Therefore,
Even if either the left or right slide piece is in the upper position, that is, in the disengaged position of the side clutch, the rotary lever... -31K
Due to the extraction operation of the lock bin 27, the restraining arm 3
3 is the bin 24 located above and therefore the slide piece 15
K is arranged so that it moves downward in conjunction with ゜15'.

This embodiment has the same configuration as described above, so for example, the first
As shown in FIGS. 10 to 10, when the left speed clutch lever 9 is squeezed with the handle 7 fixed in the normal position, the bin 24 moves upward via the wire 10 and the arm 23, and 24 pulls the upper seventh rank portion 15m, the left slide piece 15 moves upward, and the left side clutch 13 is disengaged via the wire 12 and arm 14, and the tiller I turns leftward.

Similarly, when the right side clutch lever 9 is squeezed, the right side clutch lever 13 is turned off via the right slide piece 15', and the tiller 1 #'i is turned to the right. When both side clutch levers are squeezed, both The side shoes and chi are cut and the tiller stops.

To switch the handle 7 from the normal position to the reverse position, the handle pivoting lever 31 is operated downward as shown by b in FIG. 6. Then, the check arm 33 fixed to the lever 31 also rotates, and the lock pin 27 moves upward against the spring 29 as indicated by b' through the pin 35 provided on one side of the check arm 33, and the lock pin 27 moves upward against the spring 29 as shown by b'. Tip is hole 3
Exit from 0m. In this state, the handle 7 has a latch that rotates around the boss 2o as shown in FIG. 11, and as shown in FIG. By releasing the pressing force at position b, the spout 27 moves downward based on the spring 29, its tip engages the hole 30c, and the handle 7 is fixed in the reverse position.

Then, the meshing state of the side clutch and the wire 13 and the wire 1
Even if the slide piece 15 or 15' does not return to its original position as shown by the chain line in Figure 6 due to resistance of 33 is rotated downward as shown by the chain line, whereby the pin 24 is also forcibly returned downward, and the slide piece 15 or 15' is held in the lower position, that is, the in position.
The handle 7 can be rotated without any trouble. *At this time, even if the side clutch and the chi 13 are in the cutting position due to the meshing state, the wire 12 is relatively lifted and absorbed as shown by the chain lines in FIGS. By moving the slide piece 15°15' to the outer plate 15d, 1
3, which is forcibly moved and held downward via the pin 24 and the slide piece 15ti, even if you accidentally grasp the side club or teleoper 9 while turning the nozzle.
It is impossible to move while being held in a crutch position.

When the handle 7 is in the reverse position and the left side club, tilter, i.e., the right side club in the normal position, and the teleper 9 are grasped, the left slide piece 15 moves upward via the wire lO and the arm pin 24, and the left side club is cut and the tiller l turns to the left.

Next, a partially modified embodiment will be described based on the gta diagram and FIG. 14.

A welfare arm 36 is fixed to the base end of the handle rotation lever 31, and a pin 35 connected to the lock bin 27 is supported on the cough arm 36.

Further, a restraining arm 33' is attached to the retaining plate 26 by a pin 37.
The arm 33' is rotatably supported, and one end of the arm 33' is in contact with the left and right slide pieces 15 and 15', and the other end can be brought into contact with the upper end of the cup 27. .

Therefore, when the rotary lever 31 is operated from the a position to the b position, the mouth and cup pin 27 are moved upward through the arm 36 and the pin 35 and come out of the hole 30m, and the identification of the handle 7 is released. At this time, even if the slide piece 15 is in the upper position, the restraining arm 33' rotates in conjunction with the upward movement of the lock pin 27, so that the slide piece 15 is forcibly moved downward. The Y dollar 7 can be rotated without any trouble.

As explained above, according to the present invention, the lock pin 27
The slide pieces 15 and 15' are interlocked with each other, and the slide piece is moved to the side club by unfixing the opening and the cup pin.
Since the handle is configured to be returned to the closed position, it is possible to reliably prevent the switching device 11 from being damaged when changing the direction of the handle. In addition, the side clutch and teleoper 9 cannot be gripped unless the lock pin 27 is securely inserted into the hole 30 and in a closed position. In addition, if the mouth or Kubin 27 is caught, by holding the side club or teleper 9, the Ll can be prevented from occurring.
It is possible to securely insert the y-bin 27 into the hole 30 and use it.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing a tiller to which the present invention is applied;
The figure is a side sectional view showing the operation interlocking system of the side clutch, FIG. 3 is a front sectional view thereof, the front view showing the handle part of No. 41, and FIG.
X Figure 6 is a rear view showing the side clutch and chi switching device, Figure 7 is a side view thereof, Figure 8 is a side sectional view showing the slide piece part, and Figure 9 is a side view of the nozzle in the same state. Fig. 11 is a plan view showing the turning operation of the handle, Fig. 12 is a plan view showing the vertical state with the handle in the reverse position, and Fig. 13 is another embodiment. Figure 14 is a side view of the rear view, l... Mobile agricultural machine (tiller), 3,3a...
- Airframe, 7... Handle, 9... Side clutch lever, 11... Side clutch, CH switching device, 13-... Side clutch, 15, 15'
...Slide piece, 24...Engagement member (bin), 27...Lock pin, 30...Hole,
31-...Hand envy rotation Reno ζ-, 33, 33'-
...Check arm applicant Mitsubishi Agricultural Machinery Co., Ltd. Figure 1

Claims (1)

[Claims] (1) The retaining member connected to the side clutch lever located on the handle is movably engaged with the slide piece that is linked to the left and right side clutches respectively, and the direction of the handle relative to the aircraft is adjusted. In a mobile agricultural machine configured to be changeable, a slide piece is interlocked with a lock bin for fixing and releasing the handle from the machine body, and the opening is connected to the lock bin. A side club/chi switching device configured to return the slide piece to the side club/chi position by releasing the fixation of the cup pin.